Quote:
Originally Posted by Paul Workman
Um, yeah...425 hp NET or GROSS?
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All the HP figures are from the same dyno, min of 5 pulls. We tested a straight out of a car LT5 and got max between 372-380HP and the 1970 based full roller motor LT1 at 423-428HP. Both GM 350 small block engines.
We always started with baseline runs to see how much GM fudged the numbers for insurance purposes. Common practice...
So I would call those numbers for both engines net at the flywheels.
When the ZR1s were introduced the LT5 option alone was $35,000.00 and there were no aftermarket engine parts for the LT5.
I still have one of the first sets of JLs lightweight pistons in my cabinet. I have I believe 2 different sets of cams because we were testing for max lift limits/spring pressure ranges. Airflow was always the restriction that limited the output.
When I started fooling around with them Lingenfelter charged $16,000 to build a motor from a new engine and Calloway was at $14,500.00.
Now guys buy their entire cars for that.
I always wonder how many of the current owners would have one, then try and modify it, if they had to pay 80K for them. even in the lower current usds.