Question about a 360 piston/rod combo
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Senior User
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Question about a 360 piston/rod combo
I was just toying around with options for my 360, and was wondering:
Could I keep the same crank, use a 390 piston (such as Federal Mogul's cheap P381NP with 1.66 compression height) and put the 6.7" stroker rod together?
According to my math, I'd get about 9.45:1 static compression (assuming 72cc heads, gasket bore and thickness, etc.).
Are there any piston/rod combos that work here? I don't want to drop the crank if I don't have to. Thanks.
Could I keep the same crank, use a 390 piston (such as Federal Mogul's cheap P381NP with 1.66 compression height) and put the 6.7" stroker rod together?
According to my math, I'd get about 9.45:1 static compression (assuming 72cc heads, gasket bore and thickness, etc.).
Are there any piston/rod combos that work here? I don't want to drop the crank if I don't have to. Thanks.
Elder User
Joined: Jan 2010
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From: Hattiesburg, MS
.....I'm not sure why he does not want to remove the crankshaft. Trying to replace pistons with the block still in the truck??
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I would reckon the easiest thing to do is to find a running 390 engine and swap motors rather than mess with trying to monkey new pistons and half-assed rods on a crappy 360 crank.
Josh
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That'll about do it, it needs a 390 crank then. I was just hoping. I'm planning on tearing it all apart, but leaving the block in the truck.
I was just wondering if I can leave it technically a 360 still by leaving the crank in place, unbolting the rods, driving out the old piston/rings/rods, and putting new ones in place that get better compression.
Guess not, and thanks.
I was just wondering if I can leave it technically a 360 still by leaving the crank in place, unbolting the rods, driving out the old piston/rings/rods, and putting new ones in place that get better compression.
Guess not, and thanks.
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From: Faibanks Ak.
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That'll about do it, it needs a 390 crank then. I was just hoping. I'm planning on tearing it all apart, but leaving the block in the truck.
I was just wondering if I can leave it technically a 360 still by leaving the crank in place, unbolting the rods, driving out the old piston/rings/rods, and putting new ones in place that get better compression.
Guess not, and thanks.
I was just wondering if I can leave it technically a 360 still by leaving the crank in place, unbolting the rods, driving out the old piston/rings/rods, and putting new ones in place that get better compression.
Guess not, and thanks.
Josh
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