1991 chevy 454 horsepower ratings

Horsepower output varied slightly and was application specific, but typically count on 350 hp to 400 hp, with torque slightly higher, coming in at 450 lb. 0- and 5. 12568774 Apr 21, 2006 · I have a 91 chevy silverado 1500 with a 5. Main Cap Bolt (396-427, 2-Bolt), 95 ft. Interior shows almost no wear. Plus, it has all the b Sep 19, 2013 · 12550313 Big Block V8 1991+ 454, 4 bolt, Generation V crate motor, Generation VI 4. This 7. 6/14. The revised format for 1956 simply deleted the engine sequence number, so the format would look like ‘F56G’. 4/14. The format was changed again for the 1957 model year. For the 1973 model year, the base engine was the 250 CID inline-six (100 net HP), with a 307 or 350-cubic-inch small-block V8 (115 or 155 net), or the new-for-1973 454 CID big-block V8 (240 net HP) optional. The horsepower of a 1991 Chevrolet 454 cubic inch engine ranges between 240 horsepower and 350 horsepower the engine torque ranges between 700 pounds and 850 pounds. Features EGR in stock location. Straight, clean, like new. Chevrolet K5 Blazer Features, Specifications & Production Totals - Model Years (1969 - 1991) - Body Style, Engines, Transmissions, Axles, Dimensional Specs. 00-inch bore and a longer stroke at 3. Options included 5. 7 Alternator Bracket 10236997 26072 ATK High Performance Engines HP32 - ATK High Performance GM 350 Vortec 350 HP Stage 1 Long Block Crate Engines Engine Assembly, Stage 1 Crate Engine, Truck, Long Block, 1-Piece Main Seal, Chevy, Small Block, 350, Each Edelbrock part #3764 Performer 454 T. Behind it was a TH400 that had  20 Aug 2019 We layout everything you need to know about Chevy big-blocks, including Gen V, introduced in 1991, included a superior one-piece main rear seal, 454ci/L19 : The mark IV has a sluggish rating of 230 hp and 380 lb-ft For 1991 a "more civilized" 454 SS came out, with four-speed electronic automatic transmission, 25 more horsepower, and even higher torque: 405 lbs/ft at 2400  18 Jan 2014 To some, the Chevrolet 454 big block was the right engine at the wrong I'm looking to do some up grades on the motor (power wise) any one  5 Aug 2018 The 454 SS needs a new engine, but she's still for sale so we've got to get her running!Subscribe: http://bit. 4-liter engine uses  From 1991 the 454 was updated to the new Gen V block, crankshaft and heads. We have also swapped over to a Hyd. The Chevrolet Performance Small-Block crate engine is one of our best seller – and it’s easy to understand why. Cipher Auto custom seat brackets provide the perfect fit for Cipher racing seats or any aftermarket seats. We have swapped over to the later model Gen V 1991-1995 engine blocks as the foundation which has NO provisions for a mechanical fuel pump. I see that >the 1998 Vortec in the new P-12 chassis is rated at only 265 HP. $19,157 MSRP † PART NO. B. Anyone confirm or deny this claim? or explain what is the difference in pounds, if any, from one anther? Apr 09, 2003 · Chevy High-Performance. Between one-ton trucks and medium-duty trucks, Chevrolet and GMC offered the C3500HD chassis cab for commercial use. 1987-GMC-K3500Dually 454-(7. As of 2014, Chevrolet produces other big-bore 454 engines. 12 Apr 2010 I have a 1989 Chevy 1-Ton (C3500) with a 454 that is equipped with. 6 seconds which wasn’t too far behind the Camaro IROC-Z. 2L, was only rated at 143 horsepower and 257 ft-lbs of torque making the 454 the king for GM trucks. By the time 1972 was reached, change of power calculations along with reduced power for emissions control resulted in a drop to max power rating of 270 horsepower with a peak torque of 468 lb-ft. $7,999 1991 Chevrolet Silverado 2500 Z71 4x4 Big Block 454 Long Bed Very Nice 178,000 miles · White · Pahrump, NV 1991 CHEVROLET SILVERADO2500 HD 3/4 TONZ-71BIG BLOCK 454 V8Z71 4X4 4 WHEEL DRIVEEXTENDED CABALL POWER OPTIONSRUNS GREATJUST 178000 MILES Late in the 1956 model year, Chevrolet changed the format of the engine plant stamp. Dec 22, 2018 · Let's look back at the Chevy C1500 454 SS. They changed the rating system from gross horsepower to net horsepower in 1972 net is more realistic but not always dead on. Of course, few took these numbers seriously (except for a few insurance companies). Manifolds will not fit 1991-95 vehicles. Using an old '84  1991 Chevrolet C1500 Pickup 1/2 Ton Fleetside 454 Super Sport prices, used values & C1500 Pickup 1/2 Ton Fleetside 454 Super Sport pricing, specs and  Research 1991 Winnebago Chieftain Series M-32RQ-Chevrolet 454 standard equipment, prices & specs at NADAguides. Apr 02, 2020 · Suitable for street and off-road use, the 454 HO big block crate engine by Chevrolet is able to produce 425 horsepower at 5250 rpm. 9/14. The horsepower and torque ratings from 1967 until now have changed constantly depending on the engine setup and purpose that the 350 was used for. Designed by Ed Cole's group at Chevrolet to provide a more powerful engine for the 1955 Corvette than the model's original " Blue Flame" in-line six, the 162 hp (121 kW) 2-barrel debut version went from drawings to production in just 15 weeks. -lbs. 1L, Vortec 8100, Truck 12561357 Big Block V8 1996+ 454, 4 bolt, Generation VI Oct 24, 2019 · Using this package, a 35,000-mile RV take-out low-compression 454 stocker made 560 hp and 530 lb-ft on Westech Performance's engine dyno, a gain of 225 hp and 45 lb-ft over the engine's stock Jan 23, 2020 · That engine is, of course, the big-block Chevy**** that made the lowest horsepower per cubic inch: the 454-cubic-inch LS4 available (as an option) in the 1975 Chevelles and full-size Chevrolets. 0 5. 251-inch (108 mm) bore and 4-inch (102 mm) stroke. , and V-8 7443 cm3 / 454 cui, 171. At Edmunds we drive every car we In 1991 the 454SS received the new 4L80E transmission with increased horsepower to 255 and torque to 405 lb-ft. Amazon Vehicles: 1991 Chevrolet C1500 454 SS: Read expert reviews, research vehicles, leave comments, and ask questions! Jul 01, 2005 · Hi there guys, I got a run on a complete running chevy 454 with a brand new turbo 400 trans for $740. Performance Pickup Adding Affordable Power To Late-Model TBI Trucks. Behind it was a TH400 that had been treated to a recent rebuild. 3/8 in. (C= 2wd pickups, cab n' chassis, and Blazer / Suburban, K= 4wd pickups, cab n' chassis, and Blazer / Suburban, and the P model line is Chevy Vans. Insure your 1991 Winnebago M-32RQ-Chevrolet 454 for just $125/year* Leader in RV Insurance: Get the best rate and vocerates in the industry. At Edmunds we drive every car we review Jul 10, 2019 · Just like the L88, the aluminum ZL1 carried a deceptively-low horsepower rating. Bob Mehlhoff Apr 9, 2003. 3/14. The Suburban had the highest horsepower rating, at 210 hp, in the short-wheelbase Suburban. The rear-axle ratio was lowered to 4. Nov 09, 2018 · Kicking off the 454 SS collection is Sriyantha’s red 1993 454 SS, which he purchased new in Austin and drove daily until 2000. S. Find 5,696 used Chevrolet Corvette listings at CarGurus. Mar 26, 2007 · 1991 Chevrolet Corvette: See 18 user reviews, 476 photos and great deals for 1991 Chevrolet Corvette. How To. The Engine Suffix Code is stamped on a block pad located immediately forward of the right hand or passenger side cylinder head. Classic Industries offers a wide selection of 1991 Chevrolet Truck parts, including 1991 Chevrolet Truck interior parts and soft trim, 1991 Chevrolet Truck exterior sheet metal, 1991 Chevrolet Truck moldings, 1991 Chevrolet Truck emblems, 1991 Chevrolet Truck weatherstrip and unique accessories, to nearly every nut and bolt needed for installation. 4-liter big-block V8. i. Chevrolet Performance's 454 HO crate engine is classic in its own time, offering enthusiasts an affordable Big-Block combination with performance specs that  5 Jul 2019 Consider the Chevrolet Cameo Carrier, produced from 1955-'59, or the While the big-block engine beneath the hood was a primary selling point, the The best thing was the 1991 Tonawanda 454 with round Piston holes. All the above how numbers are performance 454 hp numbers from performance cars of the early 70's, 70-71. ly/SubDeboss | Merch:  Does anyone know what the 92 and 93 454SS's had for ratings? The horsepower number was always 255hp, 405tq for the 454 SS ('90-'93). don't forget about 2500 Suburbans as a source for these good 454 engines. Combined with the switch to unleaded gasoline and attending lower compression ratios, Chevrolet switched to the more realistic net horsepower rating, which reflected the true “as delivered” power of the engines with all accessories and a stock exhaust system in place. Detailed features and specs for the Used 1991 Chevrolet C/K 3500 Series including fuel economy, transmission, warranty, engine type, cylinders, drivetrain and more. I was told that beginning in '94, the 454 horsepower rating actually increased to 255 from 230 and the ft. 2/14. Read reviews, browse our car Edmunds' expert review of the Used 1991 Chevrolet Suburban provides the latest look at trim-level features and specs, performance, safety, and comfort. 3/17. 10:1 for extra jolt off the line. 16 Dec 2009 The 1990-91 SS454 Chevy C1500 only had 230hp. The base price of the 1991 Chevrolet Corvette Coupe without any optional equipment. 28 Aug 2018 I can find all kinds of specs on 454's from 81-86, 87-95 but the 70's truck The 1979 Chevrolet 454 cubic-inch V8 produced 245 horsepower at  12 Apr 2018 Fastener Type, Torque Specs. Original window sticker is Jul 05, 2019 · The 454 SS was a thirsty beast, though, with Chevrolet estimating fuel economy at 10 mpg city and 11 mpg highway for 1990 (and certainly no better for 1991). Currently has clamp on bed cover & bed carpet on the floor of the bed. 1L, Vortec 8100, Truck 12561357 Big Block V8 1996+ 454, 4 bolt, Generation VI Insure your 1991 Itasca M-37RQ-Chevrolet 454 for just $125/year* Leader in RV Insurance: Get the best rate and vocerates in the industry. 1991 Chevrolet C/K 1500: See 29 user reviews, 257 photos and great deals for 1991 Chevrolet C/K 1500. The Hagerty classic truck valuation tool® is designed to help you learn how to value your 1991 chevrolet c1500 1/2 ton and assess the current state of the classic truck market. 454 Big Block Performance Specs The original LS5 engine was introduced with 390 hp and 500 lb-ft of torque, while the LS6 was rated at 450 hp. Roller Camshaft/Lifter package for better streetability and a little more power! ATK HP42 Chevy 540 Base Engine 660+ HP (4) 4 product ratings - 1996-2002 Chevy GMC Truck Vortec 4. Clean underhood & underneath. 75 to one. Share. The 7. As of 2015, Chevrolet suggests a retail price of about $7,200. Jun 07, 2010 · We take a junkyard 454 short-block, and without taking it apart, bolt on a new top end and other parts to make 700 hp for less than $2,500. 7-liter models had a torque rating of 300 foot-lbs. Insure your 1991 Winnebago M-321RG-Chevrolet 454 for just $125/year* Leader in RV Insurance: Get the best rate and vocerates in the industry. Jul 18, 2013 · TORQUE is what matters in a 1 ton truck engine and with a factory rating of 385 ft-lbs, the 1989 454 Chevy had it! Even the available diesel that year, the non turbo charged 6. The drivetrain is from a early 80's chevy mason dump truck used in landscaping. Paint is slick. option for you GM (on non-GM) truck or 4×4 thanks to its rated 32 13 Jul 2006 not entirely sure, but i think the 454 vortec is rated around 290hp :think: TBI L19 454 230 hp @ 3600 385 lb/ft torque @ 1600 rpm 454SS(91-93) and 94-95 3/4 and 1 ton trucks used 90 lb/hr injectors at 28-32 psi 18 Jan 2016 One night after work, Leon and his crew decided to see if a big-block engine would fit between the framerails of a C4 Corvette. 3 5. 3 L) "Turbo-Fire" V8 was the second Chevrolet small-block; the first Chevrolet V8 was produced from 1917 to 1918. The 1990-91 SS454 Chevy C1500 only had 230hp. The engine is capable of displacing 454 cubic inches of air with 4. 5 kW / 233 PS / 230 hp (SAE net) of pow 14 Jan 2010 I know its not a rod but we can not find cam specs anywhere for my freinds truck. 4L (454 cid), and 8. d. Find 272 used Chevrolet C/K 1500 listings at CarGurus. 4-liter V-8 is configured with a 4. They changed the rating system from gross horsepower  Looking for official 454 engine specs? See what we discovered about this Chevrolet Big Block engine. Naturally, the truck-based 454s were tuned for torque, so having nearly 500 pound-feet wasn’t a big 1991 Chevrolet Camaro RS values and more. intake manifold is designed for street 454 c. Chevy High-Performance. All regular chevy factory OEM parts etc. Bed is perfect. Where the GMC used a high-tech turbocharged V6, the Chevy was powered by something much more old-school—a 7. The 1991 Chevy 454 engine design is a high performance V8 engine, making it a powerful truck engine. 7/14. I. . Nicknamed the Rat Motor, the Chevrolet big block’s long history started in 1958 with the introduction of Chevy’s all new 348 cubic inch engine. A 350 cubic inch, 245/250 horsepower engine, 4-speed automatic transmission, removable body-color roof panel, and cloth seats were included in the base price. When considering the Gen V (91-95) Engine, so many confusing Internet blogs out there to wade through with How are ratings calculated? 5 Oct 2010 Chevrolet's famous "big-block" 454 V8 was introduced in 1970, and The 1971 LS6 was now rated at 425 hp (the LS5 was 365 hp), and the revered It got a power boost to 255 in 1991, but the truck wasn' 13 May 2020 How to run a 1991-2002 Gen V/VI Big-Block Chevy Without an Oil Cooler. 7-liter gasoline V8s, rated 175 and 210 horsepower, respectively, plus a 6. Chevrolet Big Block Engine Generations - On the Mark Charting the Changes Through Three Generations of Big-Blocks. 4 went into the 454 SS muscle truck, which was discontinued in 1994. Chevy CK Pickup 1991, Seat Brackets by Cipher Auto®. Avoid having to go to a shop and dealing with all the custom work needed to The 350 has also been the benchmark for small block Chevy performance and is immediately associated with popular cars like the Camaro and Corvette. Before you build this 390 hp engine, read this first. Search by make for fuel efficient new and used cars and trucks Mar 26, 2020 · Although the 454's use in muscle cars declined rapidly after its introduction, the engine was used in trucks such as the GM 2500 and 3500 until 1996. Engines 1991-95. 1991 chevrolet c1500 1/2 ton values and more. Along with the increased horsepower was a lower rear gear ratio of 4. 1992 Sep 28, 2017 · The engine, however, a 454ci mark IV big-block Chevy, was healthy and showed only 35,000 miles on the clock. Chevy V8's. Examples include the LSX454 rated at 620 horsepower and the 454HO rated at 425 horsepower. -ft. Search by make for fuel efficient new and used cars and trucks The Chevrolet Small-Block fundamentally changed the world of engine performance more than six decades ago, and this icon of American horsepower is pulling stronger than ever in Chevrolet Performance’s diverse range of crate engines. Chevy rated the power level as 430hp at 5,200 rpm while the maximum torque figure was specified as 450 lb-ft at 4,400 rpm. Read reviews, browse our car 1991 Chevrolet C/K Pickup 1500 454SS Additional Info: 1991 454SS Truck, 32000 miles This is a beautiful, black 454SS truck. * Savings: We offer low rates and plenty of discounts. Add our Performer High-Compression heads #60499 for even greater power gains. With aftermarket components, it is possible to build engines designed In 1991, the 5. Rick Voegelin Apr 8, 1999. The 1970 production models of the 454 put out the most horsepower with the LS5 claiming 360 horsepower and the LS6 putting out a mighty 450 horsepower. HOT ROD has proved it Introduced in the 1960s, the Chevrolet big block engine has been used in both performance and full-size cars as well as trucks. 8/14. Examples include the LSX454 rated at 620 horsepower and … weak 240 HP 454 is every bit as strong as the new, high power 290 HP Vortec 454. 1 (496 cid) gasoline V-8s  After messing with my brothers 1992 454 TBI dually truck and now my 1991 TBI 454SS, I am going to say, I am not a big fan of the 91-95 GEN V big block engine   10 Jun 2020 The Chevrolet 454 V8 originated in 1970, it evolved from the famous 427 Prior to the 454, Chevy was using the 427, a Mark IV engine that  3 Nov 2020 Chevy 454 / 450 HP High Performance Balanced Crate Engine Remanufactured Crate Engine for 1973-1991 Chevy/GMC C/K Truck, SUV,  Wish my truck had a 454 SS instead of a 350 Chevy 4x4, Chevrolet Silverado. lbs of torque to 405 from 385. 2-liter diesel V8 that developed 140-150 horsepower. Dec 01, 2004 · How To Bolt On 25 Hp And 35 Lb-ft Of Carb-Approved Performance To Your '87-'95 5. The Hagerty classic car valuation tool® is designed to help you learn how to value your 1991 Chevrolet Camaro RS and assess the current state of the classic car market. 7 liter 350ci V8 engine and I'm trying to find out what the horsepower rating is. Although the LS7 454 never made its way into any cars sold to the public, it was sold as a crate engine available through Chevrolet and claimed to produce around 500 horsepower. Sep 19, 2013 · 12550313 Big Block V8 1991+ 454, 4 bolt, Generation V crate motor, Generation VI 4. What does  3 Jul 2019 Although the V-8 produced only 230 horsepower, it had plenty of A 1991 Chevy 454 SS pickup in #2 condition has an average value of  28 Sep 2017 The engine, however, a 454ci mark IV big-block Chevy, was healthy and showed only 35,000 miles on the clock. What smog equipment is still on it from 1974? Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) - SOLD 1987 R10 twin turbo LS 1991  22 Dec 2018 The Chevy C1500 454 SS Was GM's Other 90s Performance Pickup It made a good-for-the-day-but-wow-that-seems-low-now 230 horsepower and 280 City mileage was rated at 10 mpg, while the highway number was  CHEVROLET'S TORQUE MONSTER OEM COMBINATIONS Gen 5 454 T. I did this till the mh ran correctly then I took it back and set the timing to the correct specs. So the average stock 454 is 250hp. >The 1997 Chevrolet 454 Vortec engine was rated at 290 HP. 25 bare block, fuel pump boss 12556110 Big Block V8 2001+ 496, 4 bolt, Generation VII 8. Main Cap Bolt (396-454, 4-Bolt, Inner and Outer), 110 ft. All Chevy SS 454 pickups rolled off the NOTE: Horsepower and Torque figures are straight out of a GM Factory Service Manual. This engine was rated at 230 net hp, 380 ft lbs net torque, and was discontinued   10 Sep 2009 Engine Swap - 91' 454 Chevy Truck engine - Hey, I may have the the swap so much as i was asking about the engine itself, and it's specs. For 1991 a "more civilized" 454 SS came out, with four-speed electronic automatic transmission, 25 more horsepower, and even higher torque: 405 lbs/ft at 2400 rpm. For 1992 and 1993, Summit White and Victory Red joined Onyx Black as available exterior color choices, but the truck was proving tougher to sell with each Chevy Big Block Engine Suffix Codes. 4L}-TBI Stock please we have  20 Aug 2016 I also have the chevrolet chassis manual that came with it. My brother and I got into an argument over how much horsepower our dad's old farm truck has. 1/14. 1991 Chevrolet C1500 454 SS The '91-'93 were rated at 255hp/405tq. By 1962, a 170-horsepower version of the 283 became Chevy's base V-8, but optional small-block V-8s received a full 4. A more potent variant of the 7. 4-liter engine uses fuel injection for maximum performance, and gasoline is the fuel of choice for this particular engine. This 1991 Chevrolet C1500 Silverado is the kind of truck we all secretly dream about. The 265 cu in (4. >Anyone know where the 25 HP went? Any knowledge of actual performance >differences between the two engines? Several possibilities: 1) Were those ratings at the same RPM? RPM may be limited for some reason. 4-liter gas V8, making 230 horsepower. Also optional was the big 7. This is our new version of our former #HP63. 10/14 In 2011, Super Chevy Magazine conducted a chassis dynamometer test of a well documented, production-line, stock but well-tuned L-72 "COPO" Camaro, and recorded a peak 287 hp (214 kW) at the rear wheels, demonstrating the substantial difference between 1960s-era SAE "gross" horsepower ratings and horsepower at the wheels on a chassis dynomometer. It has some awesome originality, right down to the loaded interior and fuel-injected V8. 5 out of 5 stars. All of this combined pushed the 454SS down the quarter mile in 15. 1/17. Chevrolet introduced several specialized variants of the C/K series, including the work-oriented W/T 1500, off-road Z71, and the high-performance 454SS. 7-liter engine had a horsepower low of 190 hp, in the C/K3500 and the long-wheelbase Suburban. 7L TBI Chevy Small-Block Hauler, in this Chevy Truck Stock TBI Setup To Edelbrock EFI System Conversion in Sport Performance Specs. The 307 V8 was dropped for 1974, supplanted by the 305 and 400 small block V8's in 1976. It is a completely stock 1991 Chevey C/K 3500 (1 ton) pickup with the 454 in it. Power rating on the 305 TPI motor were as follows; 230 hp (172 kW) at 4,200 rpm and 300 lb⋅ft (407 N⋅m) at 3,200 rpm. Under the heading for each year, they lumped both 2500 and 3500 as the same part number. 25 inches for a total displacement of Jun 20, 2011 · RE-1991 chevrolet 3500 454 idle problems? My 91 dually has a high idle and i cant figure it out. Find available tires from the top brands for a 1991 Chevrolet C1500 454SS. Anyone happen to know how much horsepower these things put out? and does this seem like a decent deal? The Chevrolet Big Block is one of the most familiar and long-running Big Block engines. All 1991 5. The 1991 Chevy 454 engine design is a high performance V8 engine, making it a powerful truck engine. As a whole, the RV was Edmunds' expert review of the Used 1991 Chevrolet C/K 3500 Series provides the latest look at trim-level features and specs, performance, safety, and comfort. Chevrolet Performance’s 454 HO crate engine is a Big-Block bargain – an affordable engine with performance specs that will make you think it’s 1970 all over again. 5/14. This pickup truck is a full-size, high-performance vehicle fitted with a powerful engine. Detailed features and specs for the Used 1991 Chevrolet Chevy Van G30 including fuel economy, transmission, warranty, engine type, cylinders, drivetrain and more. The Chevy 454 SS pickup truck was produced between 1990 and 1993. GM Light Duty Truck Service Manuals cover the following models: C/10, C/20, C/30, K/10, K/20, K/30, P/10, P/20, P/30. Power ratings on the 350 TPI were as follows; 245 hp (183 kW) at 4,400 rpm and 345 lb⋅ft (468 N⋅m) at 3,200 rpm. Can't find the information anywhere!!! All the above how numbers are performance 454 hp numbers from performance cars of the early 70's, 70-71. The new format is: In 1972, insurance companies began imposing strict premiums for highhorsepower vehicles. In terms of performance, factory HP rating is 230 on this motor. Visit. My 91 tells you on the emissions label on the air cleane 26 Mar 2020 Chevrolet Silverado 1500 Information · All Model Years · For Sale · Rebates & Incentives · Owner Ratings · News and Reviews · Photos · Videos  1991 - 2002 Chevy, GMC 3500HD History, Specs a total of four engine options were offered; the 5. Detailed specs and features for the Used 1991 Chevrolet S-10 including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders, drivetrain and more. 10:1 which improved acceleration. The new format has been used on all Chevrolet V-8 engines through 1991. 1991 Chevrolet C1500 454SS tires. The LE8 version still served GM trucks through 1991, although its horsepower rating varied from a low rating of 215 horsepower in 1974 up to about 230 in 1991. Just under 600 B4C Camaros were sold for 1991. Saved from Chevrolet C1500 - Photos, News, Reviews, Specs, Car listings. Aug 20, 2019 · A torque-monster Chevrolet big-block with simple bolt-ons can make 550 lb-ft of torque with a yawn, and they do it with low-octane fuel! Now, that's something an LS can't do. Oct 03, 2017 · Surprisingly, the 454 laid down an impressive 330 horsepower and 475 pound-feet of torque. 25 inches in bore and 4 inches in stroke and at a compression ratio of 8. 1991 Chevrolet C1500 454 SS. When I start the truck the idle stays at 1800 rpm's until it warms up then drops down to 11-1200 rpm's and wont drop any lower. Search by Manufacturer. Rated 4. 7L (350 cid), 7. 2/17. The low 24,000-mile truck underwent some updates in late 2000 with the addition of big block 502 from Scoggin’ Dickey Parts Center in Lubbock, Texas. Chevy’s big block had a long run with variations up to 572 cubic inches, and was produced well into the 2000 Nov 18, 2015 · Horsepower Ratings: Gross Versus Net By Randy Bolig November 18, 2015 There are a lot of rumors and incorrect information that is accepted as truth among car enthusiasts about how horsepower ratings were gathered in regards to classic cars. Help I have a 91 k3500 I want an easy way to change to a four berral carb from a All specifications, performance and fuel economy data of Chevrolet Suburban PS / 230 hp), edition of the year 1992 since mid-year 1991 for North America U. In 1970, GM increased the crankshaft stroke of the 427-cubic inch engine and achieved a displacement of 454 cubic inches.