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View Full Version : pistons


rhead007
01-09-2005, 09:51:00 PM
i just refit some 327 11.5 to one pisons on 350 rods threw one in at tdc the piston sticks out past the deck bought 1/8 inch whats up with that

onovakind67
01-09-2005, 10:05:00 PM
You need a 327 crank.

rhead007
01-09-2005, 10:19:00 PM
why the crank i got a 327 crank but its small journal

[This message has been edited by rhead007 (edited January 09, 2005).]

night rider
01-10-2005, 02:24:00 AM
All the SBC (exe. 400 and 267) rods are the same lenght 5.7"

The piston compression heights are diff for diff strokes

The compression height is the height from center of wrist pin hole to top of piston crown


a 350 piston for 5.7" rods compression height is 1.560"

327 is 1.675"

302 is 1.800"

onovakind67
01-10-2005, 07:46:00 AM
<font face="Arial,Verdana" size="2">Originally posted by rhead007:
why the crank i got a 327 crank but its small journal
</font>

If you use 327 pistons on a 350 crank with 350 rods your pistons will stick out of the hole about 1/8" due to the 1/4" longer stroke of the 350 crank when compared to the 327 crank. A small journal 327 crank won't be much help unless you have small journal rods and the special main bearings.

hhott71
01-10-2005, 08:49:00 AM
if ya wanna use 327 pistons with a 350 crank ,you need to use 400 rods.

rhead007
01-10-2005, 10:08:00 AM
ok antone got a set of 400 rods to swap

rustbucket79
01-10-2005, 03:31:00 PM
Better check the fit first, trying to fit a 327 piston with a longer stroke crank and short rods usually gets you an interference problem between the skirts and counterweights.

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BluEyes
01-10-2005, 09:12:00 PM
Why not just get a set of small-journal rods to match your 327 crank?
Or get some 350 pistons?