LT4 cam and TBI

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Jul 10, 2002 | 11:35 AM

gcore45

Thread Starter

Junior Member

Joined: Apr 2001

Posts: 83

Likes: 0

From: Blacklick, Ohio, USA

Car: '91 RS

Engine: 5.7 tbi

Transmission: 700r4

LT4 cam and TBI

Would an LT4 or hot cam kit present too many problems with TBI?
I can upgrade to a Holley or tune the prom or both but was wondering about driveability up to that point.
Thanks,

Jul 10, 2002 | 05:21 PM

NJ SPEEDER

Supreme Member

Joined: Sep 1999

Posts: 2,175

Likes: 0

From: Ewing, NJ

either cam will work nicely. a prom will definately be in order to get all the power out of it, the holley tb woudl be a good idea too. just look over the info on the DIY PROM board to get an idea of where to start with the custom chip tuning.

later
\tim

Jul 10, 2002 | 09:02 PM

Chuck!

Supreme Member

Joined: Apr 2001

Posts: 1,342

Likes: 14

From: Dayton, O.

Car: 91 Camaro Z28

Engine: LS7

Transmission: M12/T56

Axle/Gears: 3.79

oops, didnt read your sig to see your mods

Yea, Id say the LT4 hot cam would be great for you!

Jul 11, 2002 | 10:38 AM

brharris27370

Senior Member

Joined: Mar 2001

Posts: 868

Likes: 0

From: Randleman,NC,USA

Car: 91 Camaro RS Convertible

Engine: 385ci LT1 cnc ported heads big cam

Transmission: 4L60E automatic

Axle/Gears: 3.42 Zexel posi 7.5" rear

I looked at your sig and it doesn't say what heads you are running on that 355. The LT4 hot cam has a lot of lift and could cause binding of valve springs or retainers hitting valve seats if not set up correctly. Been there done that.