4-30-20 day for the 430 CanAm aluminum big block Chevy

[EZ Nova]

Joe, these deals got me thinking for many reasons:

1. Have a "052" ZL1 block, 074 and '198 intaked engine. I know that the "production" '69 ZL1's @ 427 inches with the way they left GM was around the 575Hp range. NOw my motor does surpass the 700Hp mark, but with the GM parts, it wasn't an easy job and did take some time to get there. I figure these 430 I know are smaller then mine, less compression and pretty sure heads DO NOT flow anywhere near as well as mine? They do have the injection and meth fuel I figure, just not sure that these 430 would go 700Hp?

2. I'm currently doing a aluminum 4.600 bore 3.75 stroke (GM L88 crank) motor for the street. I'm figuring that these old Can-Am motors were in the 12.5 to 1 range? So I'm thinking the compression being a point higher then mine is a 30Hp advantage for the CA motors over my 498. That should be taken care of by me running FULL rollerized valvetrain, better piston AND ring designs plus smaller better rings? I will guarantee that my 2019 designed heads, with raised ex ports, better chambers and intake runners, along with the Edelbrock RPM Air Gap intake, ported, will blow away the top end those CM motors had. And very doubtful that there running 730+ lift camshafts either?

With what we as a hobby know today. Formulas for weight/ET/MPH even Grumpys Pro Stock didn't make near 750Hp with the tunnelrams? I "almost" bought a Reynolds CA block block off a member here, IIRC it was 427King, and he talked me out of it due to the no steel bores.

One strange thing this has brought up. These old alum CA motors were ran hard in that era. Both blocks and heads were pushed. I find it perplexing that for there high-rev prolonged usage, there wasn't more carnage like the street guys seen? I'm sure there was some, but like you said, these motors were cleaning up in that series, so they must have lasted a full race, reving high and being pushed. Yet the street guys are pulling rocker studs with a couple 12 sec pulls???