TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

Largest cam with stock computer??

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Old Jul 2, 2009 | 12:19 AM
  #1  
mvvette97's Avatar
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Largest cam with stock computer??

I'm going to be putting a 350 in my nephew"s 88 camaro with the TBI injection. He loves the sound of cams so I thought I would see if I can find something mild but yet has a slight lope. He was wanting something like my 2000 TA has but I said no way. haha. Would something in the 212 up to a 216@.050 work and not have much idle issues? I have no way of tuning the older cars and he doesn't have the money. I'm just rebuilding a stock 350 so if I can put a mild cam in and have it still run ok I was thinking of doing that.
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Old Jul 2, 2009 | 12:53 AM
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From: Salt Lake City, Utah
Car: 1988 camaro "SS"/ 1991 305/T5
Engine: 383 LT1 in progress/LT1TBI 355 soon
Transmission: Probuilt 700R4 3600 stall/ T5
Axle/Gears: Moser axles, 3.42 Eaton Posi
Re: Largest cam with stock computer??

the largest cam I think you could get away with and it MIGHT run would be a Ram Jet cam. (196/206 @.50 .431int/.451exh. 112 LSA PN#14097395) Even then to get the absolute most out of it it will definately need to be tuned. Or if you want to go alittle milder go for a stock Vortec or Bbody LT1 cam 10243779 191/196 - .418int/.430exh 111 LSA.
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Old Jul 2, 2009 | 01:43 AM
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Car: 84 TA / 89 Formula
Engine: LS1 / L03
Transmission: T56 / 700R4
Axle/Gears: 3.73 / 3.27
Re: Largest cam with stock computer??

@mvvette, are you going to use a L05 (TBI 350) tune/pcm for this? imho there's no way running a 350 on a 305 tune, even more so if you go one step up from stock for the cam.
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Old Jul 2, 2009 | 10:18 AM
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Re: Largest cam with stock computer??

haven't really thought about that. The engine is still in the truck so can I just pull the computer from the truck? it's also an 88 chevy 1/2 ton.
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Old Jul 2, 2009 | 10:44 AM
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From: OC CA
Car: 75 Beast
Engine: 383 +EBL Flash
Transmission: 700R4
Axle/Gears: 4.11 with 33"
Re: Largest cam with stock computer??

88 truck used C3 1227747 ECM which is early ECM design. These ECM have been reversed engineered and are well understood. However, we are dealing with early '80s semiconductor design (and firmware) which limits performance potential in its stock form.
You have several options that will allow you to cirmvante these limitations. Upgrade 7747 with EBL or go to a later ('90) P4 PCM 727. In both cases tunng will be required.

//RF
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