Quote:
Originally Posted by mmiddle
That Lunati cam for a 400 is about right, however, I'm not a turbo guy so others need to chime in here that have knowledge of Turbo-friendly cams.
All little 400's where 2 bolt mains and cast cranks and 2 barrel carbs.
I would be a little hesitant to force induct stock heads and cast pistons with stock rings. Sounds like you are just begging to trash a piston.
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Not all 400's were 2 bolt main, but that is irrelevent. 2 bolt mains are good for up to 500 with studs.
What was stated above about a cam being too big in a 350 being just right in a 400 is correct.
I had a 383 in a 79 Malibu a few years back with a Comp Xtreme 4x4 X4262H Hydraulic Flat Tappet Cam
Lift: .462''/.480''
Duration: 262°/270°
Lobe Separation Angle: 111°
RPM Range: 1300-5600
It was a BEAST with great torque!
My advice is to call Comp Cams tech line for advice. Be ready with a lot of info such as compression ratio, converter stall, final drive ratio, tire height, etc.