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5.7 LG tbi carb swap cam suggestion

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Old May 1, 2019 | 09:50 PM
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5.7 LG tbi carb swap cam suggestion

I have 87-95 engine originally tbi I got rid of tbi put Holley carb 600 on it. Was wondering a good cam for this Engine. No computer bs all that is gone no chip. Flame thrower distributor set up original heads. 4 bolt main . Weiand intake manifold. Can anyone help? Cam suggestions
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Old May 1, 2019 | 09:56 PM
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Re: 5.7 LG tbi carb swap cam suggestion

The computer isn't the limiting factor to cam options. TBI heads you're still going to be LIFT limited due to valve seal to retainer clearance. Google it, lots of info available. Or you can pull a valve cover, mock up the valve seal and retainer, and measure the clearance with a caliper. Easier to Google.
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Old May 2, 2019 | 12:17 AM
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Re: 5.7 LG tbi carb swap cam suggestion

Originally Posted by Drew
The computer isn't the limiting factor to cam options. TBI heads you're still going to be LIFT limited due to valve seal to retainer clearance. Google it, lots of info available. Or you can pull a valve cover, mock up the valve seal and retainer, and measure the clearance with a caliper. Easier to Google.
I will take a look thanks drew
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Old May 4, 2019 | 02:25 PM
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Car: 89 Firebird
Engine: 355 TBI
Transmission: 700R4
Axle/Gears: 10 Bolt.Posi-3.73s
Re: 5.7 LG tbi carb swap cam suggestion

Summit K1104 if it's a flat tappet truck engine. If it happens to be a roller L05 like came in Cadillacs and Roadmasters then find an L98, LT1, or any other roller with under .460 lift and you should be OK.

Last edited by dmccain; May 4, 2019 at 02:29 PM.
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Old May 4, 2019 | 10:27 PM
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Re: 5.7 LG tbi carb swap cam suggestion

Thank you very much. I was told it was out of late 80s so 87,88, or 89 from a truck. I will build it up one day but for now what I mentioned is what has been done and the cam. I’ll get rid of those swirl heads probably get Vortec or maybe even dart heads one day but I just want it to have a little more sound to it. Again thanks for the cam information it is greatly appreciated.
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Old May 6, 2019 | 09:15 AM
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Re: 5.7 LG tbi carb swap cam suggestion

Will this cam
be ok with stock lifters and springs?
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