Stock 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 MILEAGE. Always a big complaint with 454 TBI trucks. 90 and older is particularly bad and that is largely due to NO OVERDRIVE. Nothing is going to help that fuel mileage more than ...
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With electric start, electric block heater, antifreeze heater and eight cylinders, it has no drive belts to freeze up and you’ll never get bored with the job as the 454 cubic inch big block ... 1971-1972 Chevrolet Chevelle EFI Fuel Tank; Fuel Injection Ready! Includes 2 piece neck design that simply connects with supplied 2" ID rubber hose. Uses GPA 2 and 4 series fuel pumps. Not recommended with TBI or High Flow fuel pumps. If these pumps are required see part # TM34UN-T; Uses aftermarket 5 bolt senders. Multiple Ohm ranges available ...
May 12, 2012 · Hello everyone, I'm looking for the best year(s) of the GM 396 or 454. I'm actually using it for a 71' Chevelle. I've had a few guys tell me there selling a complete 454 from a truck from the early 70's to late 80's for a pretty good price. Only problem is that 454's from those years are usually...