454 TBI performance help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

zombiescustoms · 04-02-2008, 04:47 PM

I'm new to TBI and am going to do a cam, long tube headers, intake and maybe heads on my '89 454 tbi Burb, any suggestions from anyone experienced in this sort of area would be great, I have already ordered my intake, it is a dual plane edelbrock for an oval port BBC with a spreadbore flange, the stock tbi adapter bolts right to it. From what I have read the stock TB only flows 670cfm, which is very restrictive for a BBC, I would like to get around 375- 400hp out of this smog monster, I will be removing most of of the smog junk, and remove the coolant line from the TB spacer. Any other ideas??

streetstar · 04-02-2008, 07:32 PM

The TV show Trucks is doing a build up of a TBI 454 SS truck right now

This weekend they installed Edelbrock aluminum heads and a roller cam setup after they verified that the bottom end was ok to build off of -- their goal is 450 hp

was a cool episode if you can catch a re-run on Spike TV if you have it

zombiescustoms · 04-03-2008, 05:48 PM

Quote:

Originally Posted by streetstar

The TV show Trucks is doing a build up of a TBI 454 SS truck right now

This weekend they installed Edelbrock aluminum heads and a roller cam setup after they verified that the bottom end was ok to build off of -- their goal is 450 hp

was a cool episode if you can catch a re-run on Spike TV if you have it

They are using a compleatly aftermarket fuel injection ($$$$$), I'm going to try to do this as cheap as possible, and try to retain the factory FI

streetstar · 04-03-2008, 07:33 PM

Quote:

Originally Posted by zombiescustoms

They are using a compleatly aftermarket fuel injection ($$$$$), I'm going to try to do this as cheap as possible, and try to retain the factory FI

i recall that now that you mention it --- not much of the stuff they do on there is "budget oriented" thats for sure.

A set of 781(thats the last 3 digits of the casting number) heads and an RV type cam would perk it up (torque might stay close to the same if they are stock vs stock, but the 781 casting has much better hp potential than the truck heads, and are much cheaper than a new set of aluminum heads -- i saw a set on e-gay for $200 apiece from a rebuilder

04-02-2008, 04:47 PM	#1
zombiescustoms Registered User Join Date: Mar 2008 Location: Abingdon, MD Posts: 74	454 TBI performance help I'm new to TBI and am going to do a cam, long tube headers, intake and maybe heads on my '89 454 tbi Burb, any suggestions from anyone experienced in this sort of area would be great, I have already ordered my intake, it is a dual plane edelbrock for an oval port BBC with a spreadbore flange, the stock tbi adapter bolts right to it. From what I have read the stock TB only flows 670cfm, which is very restrictive for a BBC, I would like to get around 375- 400hp out of this smog monster, I will be removing most of of the smog junk, and remove the coolant line from the TB spacer. Any other ideas??

04-02-2008, 07:32 PM	#2
streetstar Registered User Join Date: May 2007 Location: Moore, Oklahoma Posts: 2,396	Re: 454 TBI performance help The TV show Trucks is doing a build up of a TBI 454 SS truck right now This weekend they installed Edelbrock aluminum heads and a roller cam setup after they verified that the bottom end was ok to build off of -- their goal is 450 hp was a cool episode if you can catch a re-run on Spike TV if you have it __________________ Are you retired too? Nonsense! I'm in my prime



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