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Original Message
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| I'll take a S.W.A.G. at it. |
| By Dave Shoe - 11/22/2002 10:58:56 PM; IP 216.243.176.34 |
It sounds like the crank is late enough to make an accurate identification using the flywheel flange features. Note this does is not accurate with 1965-earlier cranks, but I'm thinking you've probably got a later crank.
This info is probably accurate from 1966-later, but since you're talking 360, I'll constrain the dates to the 360 era which started in 1968.
If the flywheel flange has a 1/4" square cutout and six threaded holes, it's a 390 crank.
If the flywheel flange has the above mentioned features PLUS a crescent (half moon) about an inch diameter cut into the flange to create clearance for the drill bit that hollows out the rear crank throw. Note that the early 390s also got this crescent, until the engineers realized the 390 throw was long enough that there was no need for the extra machining step. I think this epiphany hit when the 410/428 crank was being designed.
Shoe. |
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This thread, so far...
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