viciousknid

iTrader: (8)

We have a 454 that we are turning into a 427. Already have a 427 crank and we have the 454 rods n pistons. I'm pretty sure the rod length is the same on both engines but is the pin height different on the pistons or do we need to use dome pistons to maintain compression?

hirdlej

iTrader: (31)

Rod length is the same, the 427 pistons do have a different wrist pin height. Good catch.

viciousknid

iTrader: (8)

Ok so we had that right. Here's the snag. The machine shop my boss uses isn't finding any pistons with the right pin height. The ones he sends are the same as a 454.
I looked on summit and the only have dome pistons with 1.765, 1.767, 1.755 compression height.
From what I gathered we need 1.782 comp height and we want to run flat tops with about 10:1

any help on getting this figured out is appreciated greatly.

dirt track racer 81

iTrader: (45)

Who's the machine shop Mike is using?

viciousknid

iTrader: (8)

Not sure. I think the one at oreilly Enid

dirt track racer 81

iTrader: (45)

Call Dunsworth.

hog

Why a 427 over a 454?

peace
Hog

budhayes3

iTrader: (19)

Moving this to the Internal Engine Mod section for ya

Gadgetized

iTrader: (9)

Should be able to get there with decking and the right head gaskets I would think.

viciousknid

iTrader: (8)

427 is why the boss wants to run in his old chevy pickup. I thought about calling dunsworth. I'll ask him to tomorrow. He's gonna bring in some 402 pistons for comparison.

Thanks Billy