Well I just found out why my car ran over a full second slower in the ¼ mile after installing a 383 stroker motor in my ’69 Camaro 3 yrs ago.
I pulled one of the heads off to check P/V clearance and discovered at TDC, the piston deck clearance was .150” in the bore. Further checking showed a 3.48” stroke. My buddy who built the motor for me bought a 383 Street Rodder kit from Ohio Crankshaft and assumed the kit was correct.
They gave him a standard crank instead of the stroker and I got a 350 motor with 6” rods, forged pistons and 8:1 compression. The motor should have had a 10.9:1 compression. No wonder the car ran fine on 87 octane , was hard starting, and was a big disappointment. I was going in all different directions trying to find out why the damn car went slower.
Now I have to pull the motor, purchase the correct forged stroker crank, out of my own pocket, and re-build it.
Just goes to show you, don’t assume anything.
Anyone else have something like this happen to them?
I pulled one of the heads off to check P/V clearance and discovered at TDC, the piston deck clearance was .150” in the bore. Further checking showed a 3.48” stroke. My buddy who built the motor for me bought a 383 Street Rodder kit from Ohio Crankshaft and assumed the kit was correct.
They gave him a standard crank instead of the stroker and I got a 350 motor with 6” rods, forged pistons and 8:1 compression. The motor should have had a 10.9:1 compression. No wonder the car ran fine on 87 octane , was hard starting, and was a big disappointment. I was going in all different directions trying to find out why the damn car went slower.
Now I have to pull the motor, purchase the correct forged stroker crank, out of my own pocket, and re-build it.
Just goes to show you, don’t assume anything.
Anyone else have something like this happen to them?
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