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While reading and posting in a recent thread on camshafts, I read a couple of posts that have me wondering about the combination of parts I should use on a car that I am putting together. I thought I would seek out the varied opinions that the TDB seems to bring with these type of postings, before making a decision.
First the car was a 1980 Corvette stolen recovery with the engine and trans missing (along with wheels and tires, and the t-tops and hood) when I purchased it, so numbers matching was never in the equation for me on this one. I decided to build a drivetrain that I thought would be street-able for driving, as well as have some balls (fun to drive).
I have built an engine with the following. Four bolt main 010 casting bored .080 oversize (yea, I know). Flat top cast pistons with valve reliefs, and an aftermarket L79 (350/350) spec camshaft with valve lift .447/.447. I am using a set of 882 castings (heads)1.94 int, 1.50 exh, that have been ported, polished, and reworked to have 70 cc chambers. I have purchased the correct 80 Corvette aluminum intake and carb, mostly to make sure everything can be hooked up properly. But, I have not decided exactly which induction system I am going to use. I have a couple of options including an original 67 L79 intake and Holley, as well as some aftermarket manifolds. My desktop dyno program tells me this:
10:1 compression
345 HP, 400 ft/lbs @4500, and
425 HP, 370 ft/lbs @6000
I swapped out some parts to a trans guy who rebuilt a THM 350 for me for this car. Not sure exactly what he did to it, but was told he made some "minor" modifications to beef it up some, while still being street-able.
So, my questions are this;
Is there a common formula I can use to compute the recommended stall speed for the torque converter I should use??
and or:
What stall speed would you fellas recommend for me to use in this contraption??
Thanks in advance for any recommendations, opinions or input,
Lynn
First the car was a 1980 Corvette stolen recovery with the engine and trans missing (along with wheels and tires, and the t-tops and hood) when I purchased it, so numbers matching was never in the equation for me on this one. I decided to build a drivetrain that I thought would be street-able for driving, as well as have some balls (fun to drive).
I have built an engine with the following. Four bolt main 010 casting bored .080 oversize (yea, I know). Flat top cast pistons with valve reliefs, and an aftermarket L79 (350/350) spec camshaft with valve lift .447/.447. I am using a set of 882 castings (heads)1.94 int, 1.50 exh, that have been ported, polished, and reworked to have 70 cc chambers. I have purchased the correct 80 Corvette aluminum intake and carb, mostly to make sure everything can be hooked up properly. But, I have not decided exactly which induction system I am going to use. I have a couple of options including an original 67 L79 intake and Holley, as well as some aftermarket manifolds. My desktop dyno program tells me this:
10:1 compression
345 HP, 400 ft/lbs @4500, and
425 HP, 370 ft/lbs @6000
I swapped out some parts to a trans guy who rebuilt a THM 350 for me for this car. Not sure exactly what he did to it, but was told he made some "minor" modifications to beef it up some, while still being street-able.
So, my questions are this;
Is there a common formula I can use to compute the recommended stall speed for the torque converter I should use??
and or:
What stall speed would you fellas recommend for me to use in this contraption??
Thanks in advance for any recommendations, opinions or input,
Lynn
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