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How different is the 1994/5 TBI 454 from the older models?

do you think the motor would handle the boost well? it already out tows the 6.5 so all im going for with the turbo is fuel economy
- Sam454
- Post #3
- Wednesday at 1:27 AM
- Forum: Engine Performance + Maintenance
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How different is the 1994/5 TBI 454 from the older models?

I know that the fuel pressure is 26-32 PSI which is much higher than the pre 1994's ~14 PSI. are there any other major differences? I am looking at turbocharging it for better power and fuel economy in the mountains around my area, so I need to know how it will react to around 7psi of boost. all...
- Sam454
- Thread
- Tuesday at 12:09 AM
- Replies: 3
- Forum: Engine Performance + Maintenance
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High compression heads on a TBI 454

8.5 after upgrades. a point higher than the stock engine at ~7.5
- Sam454
- Post #4
- Mar 23, 2024
- Forum: Engine Performance + Maintenance
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High compression heads on a TBI 454

Hello, I have put together a build list for my 1993 c2500 with a TBI 454. I figure the abysmal compression ratio could be boosted to make more power and improve economy. The list includes: less wimpy cam, hydraulic roller lifters, Edelbrock high compression heads, Edelbrock TBI intake, injector...
- Sam454
- Thread
- Mar 23, 2024
- 454 tbi tbi mods
- Replies: 3
- Forum: Engine Performance + Maintenance