Factory 402cid Dyno Sheet

[davepl]

Figured this might be of interest to some. This is the dyno sheet from my rebuilt 402 (engine dyno, not chassis). The original 310hp cam doesn't seem to be available anymore, so we used one that had almost the exact same specs. Other than that it's totally stock down to the ugly low-rise manifold. That's one ugly manifold, why they'd use a low-rise manifold like that on a truck with a foot of hood clearance is beyond me, but its the original so I kept it like everything else.

No port-matching, nothing fancy, just a .030 overbore. Original carb. I did upgrade the distributor to Pertronix3 internals, but that shouldn't add any power. AFR is on a different sheet but is pegged at about 12.2:1 all the way through.

This is gross hp, the way the factory did it pre-72, with headers and no accessories. It's only 330hp, but there are over 400 ft/lbs from about 2500rpm, so it's not too bad.

Not trying to make it fast of course, it's a Longhorn truck. But with 4:56s and a locker and a 200-4R deep first gear it should go 0-10 real nice if I can hook it up :-)