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Hi everyone. This is my first post on the forum.
i was given a 1973 010 block from my father.
I just got it back from the machine shop. It’s bored .60 over makes it 388 Stroker. I got the 400 crank.
They hung the pistons on the reconditioned rods.
rings are also already on.
I do not have the money for a roller setup or aluminum heads. But I do have parts laying around.
It will be a daily street car. Never raced.
The drivetrain will be
388 Stroker
292 Turbo Heads 2.02/1.6
L79 350 Camshaft
Super T10 4-Speed
3:55 Rear end
these are the parts I have available to me at the koment and I only will have garage space for a couple of months. I’m going with a flat tappet. And the L79 350 cam for vacuum and the nicer idle. I fiugre ill still have the low end torque anyway. Let me know what you guys think of the setup. And if there is anyway I can make it better.
You will have too much compression. A 388 with 64cc heads is a problem even with the 350HP cam.
Love the rest of it but you must address the compression ratio.
You might look at an Isky 280 mega cam 232 232 .480 .480 lift 108 LSA with your c r if you are not going to drop the C. R. Will definitely have a lopey idle but with your 4 speed and 3.55 gear should work okay. Had a friend that ran this cam in his camaro stroker and 4.10 gear with 10.5 c r . Had to run premium gas for sure! Sounded bad *** and ran 12.80s.
Since you had mounted pistons. Do you have the piston - negative cc number? If they are dished like 12 cc or so it would get you compression down to the lower 10's. Then you run it through a dynamic compression ratio calculator using the L-79 cam specs. "L79" Chevy 262-400 cid Hydraulic camshaft, 2200-5200 RPM Range, 290 intake/290 exhaust Adv Dur, Duration @.050 222 intake/222 exhaust, Valve Lift .447 intake/.447 exhaust, Lobe C/L 114
It's the same cam that came in all the L-82 vettes like mine. With it's low lobe lift and tiny lobe ramps makes it no performance cam from the smog years of sub 250 hp SBC's. It would really be starving out a 388 ci.
You need the cc of pistons, and what the measurement is from the deck to the top of piston at max height in order to accurately get the compression ratio.
For example with the piston .025 in hole, 8cc valve reliefs, and a .041 head gasket you might be closer to 10:1 static compression. You really need to know that sooner rather than later so you don’t end up in trouble with compression.
Once you figure out your compression ratio, get the cam specs and find a dynamic compression ratio calculator on line. Calculate your dynamic compression ratio and if it’s higher than about 8:1 it’s too high. That’s a decent cam despite being old technology, but I agree you will probably have too much compression with that combination.
ought to run good....if you can possibly afford a good valve job or even some bowl work thats a plus
Should be plenty of fun
Does your engine use the windage tray by chance? No need for a HV pump unless you want one. Std pressure Z/28 spring is my preference
The center main bolts in the pic above are just regular mains bolts and not the extended ones for running the L82 windage tray, so even if he still has the windage tray; he's got no way to actually install it. I'd say the windage tray is a "no".
I read that comment as he has had a machine shop machine the 400 crank down to fit his 350 mains ala an old-school Joe Sherman 383 stroker the way they were done back in the dark ages...
1979 Corvette 383 Stroker
