Chevy 454 tbi mileage improvement
WebDec 28, 2015 · 454 engine improvements for better mileage. Jump to Latest Follow 1 - 20 of 26 Posts. 1; 2 ... The place I worked for from '88-'90 had a pretty Ferrari red Chevy crew cab dually with a 454 TBI and it got 3-5 mpg with a two place enclosed. Basically, we would go racing, come back and have the dealership replace the convertor as it plugged up ... WebOct 10, 2005 · With a milder cam and a set of 3.36's it would have done better on mileage but it still worked pretty good. The 454 should have more than enough low end to handle …
Chevy 454 tbi mileage improvement
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WebMay 26, 2007 · Active Fuel Management™ technology helps the 2007 Suburban equipped with the Vortec 5.3L engine deliver an estimated MPG of 15 city, 21 highway for 2WD models and 15 city, 20 highway for 4x4 models. In fact, you can drive up to 651 miles on a single tank of gas in 2WD models. Just drop in a 4/6/8 engine out of an 07 and you're there! WebJan 22, 2024 · We reused as many parts as possible, and while our horsepower figures aren't super impressive, the Chevy 454 engine starts easily, doesn't leak, doesn't …
WebJun 14, 2010 · 88-90 454 gas mileage The 1988 - 1998 GMT400 Chevy & GMC Pickups Message Board Register ... hyd. roller cam, Edelbrock intake, better breathing '96 exhaust manifolds, took the melted down cats out... it didn't improve mileage one bit. My '72 K20 with 4.10s, Cad 500 and a Qjet does just as good, if not a little better towing. ... 87 crew … WebThe 454SS truck is a blast to drive. Really needs a wimpier gear in the rearend as that 25% improvement in power with a 4.10 gear and 28″ tall 275/60R15 tires just turns them into smoke even on a 20mph roll. About …
WebSep 23, 2012 · Mileage is what it is. You can get a little more aggressive with timing when the truck is empty...but not much. The TBI 454 suffers from horrendously tiny induction … WebDec 28, 2015 · I am looking for ALOT better gas mileage for my 84 chevy crew cab tow vechicle.Right now the mileage is about 3 miles per gallon towing a 38ft goose neck …
WebJan 9, 2024 · These late-'80s and early-'90s TBI injectors are intended to run at between 11 and 13 psi, although it's typical to see the pressure down around 10 psi. Generally, a 1-psi change in fuel...
WebJul 28, 2024 · TBI was introduced in 1988 on the 454. Now, it is entirely possible a previous owner removed the TBI and intake manifold, and installed a carburetor. Hear about … porthole window feederWebSep 21, 2024 · The stock cam used in the 1994 and 1995 TBI 454's was a little larger (200*/206*) and perked up a stock TBI 454 fairly well. If you plan on changing nothing … optic lens power limitWebFind many great new & used options and get the best deals for 1987-1990 Chevy Big Block 454 Edelbrock Performer TBI Intake Manifold 3764 at the best online prices at eBay! … optic leveroptic lhayWebStock TBI 454 makes 230hp and 380tq so stock fuel pump is maxed out right off and a typical 454 will run better with a fuel pump upgrade even with stock chip. GAS … optic levelerWebAug 2, 2012 · A carbureted 454 pushing a heavy load isn't ever going to see 8 mpg. If you plan to keep it, consider upgrading it with TBI (throttle body) or MPI (multi-point) fuel … optic light bulb sensorWebJun 10, 2024 · In 1987, the 454 switched from a carburetor to fuel injection, bumping power to 255 horsepower and 405 lb.-ft. of torque. The final variant of the Chevy 454, known as … optic light bulb mechanism