Quote:
Originally Posted by desert442
Actually, 442's in the beginning years being 66 and 67 also had the 400 cube motor. There were some 65's, and I believe those also had the 400 cube motor too. If I am not mistaken ( and I could be, so please bear with me) Olds changed the motor to a 455 starting midway in 68 due to new smog regulations passed courtesy of the EPA. The 455's ran cooler and produced less emissions, even for a big block.
I like the 400 motors, they have tons of torque and HP for what they were in stock form. Also, early 442's that have their original 400 cube motors are becoming more rare, heck even finding a 400 block and heads is very tough..
just my 2 cents worth.. hope it helps..
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OK, to be completely correct, here's the list of 442 engines for 64-72:
1964 330 small block (4 speed only)
1965-67 400 short stroke
1968-69 400 long stroke
1970-71 455
1972 any available Cutlass engine (350 2bbl through W-30)
The switch to the 455 had nothing to do with "running cooler" and everything to do with GM lifting the 400 cu in limit on A-body cars in 1970.