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73-87 Chevy _ GMC Trucks => Performance => Topic started by: gmcdwight on September 15, 2006, 07:11:00 pm

Title: whats the ultimate 350 tbi
Post by: gmcdwight on September 15, 2006, 07:11:00 pm

I have a 87 350 tbi that i won't to build up.I want lots of low end torque and good horsepower numbers.I also would like a choppy camshaft.Everyone let me know what the ultimate 350 tbi build up would consist of .

Title: Re: whats the ultimate 350 tbi
Post by: lotopp79 on September 15, 2006, 07:58:00 pm

go to tbi chips you can find him on ebay hes into making perfomance ships and can give you an idea of what you can do with you tbi but its not like building a plain old carbed engine it take a little fines to make the comp happy  

Title: Re: whats the ultimate 350 tbi
Post by: RSBAD454 on September 16, 2006, 10:52:00 am

I doubt an EFI engine will like a lumpy camshaft.....you will need a cam that will work with the ECU to make it Happy. Typically, lumpy cams produce lower engine vacuum and more cam overlap which means a bad A/F ratio for O2 sensor. I would build a 383 and keep motor basically stock with bolt ons. You want torque for pulling or for drag racing?

Toys are my game

Title: Re: whats the ultimate 350 tbi
Post by: Lt.Del on September 16, 2006, 08:33:00 pm

I concur. A 383 Stroker will give you more bang for the buck.  Stroke that 350 out with a 400 crank shaft, balancer and flywheel.

here's a gm crate 383 ho

SgtDel
aka "Andy"

www.delbridge.net

1979 Big 10 383 stroker
1991 Blu 'Burb 3/4 ton 4x4

Edited by: SgtDel  at: 9/17/06 10:08 am

Title: Re: whats the ultimate 350 tbi
Post by: RSBAD454 on September 18, 2006, 08:03:00 am

You can pickup rotating assemblies pretty cheap anymore to build a 383 out of a 350. That is what I plan on doing for my 91 down the road here.

Toys are my game

Title: Re: whats the ultimate 350 tbi
Post by: Qship406 on April 02, 2007, 12:06:00 am

Choppy camshaft and EFI is a bad combination......EFI can not handle low vacuum cams at all, even with a chip.  

Title: Re: whats the ultimate 350 tbi
Post by: VileZambonie on April 02, 2007, 09:42:00 pm

Not true and are you FAST68?  

Title: Re: whats the ultimate 350 tbi
Post by: Lt.Del on April 03, 2007, 11:05:00 am

I think so---a September thread  

SgtDel
aka "Andy"

www.delbridge.net

1979 Big 10 383 stroker
1991 Blu 'Burb 3/4 ton 4x4