Were these pistons used in 70-71 Corvettes?
12-28-2009, 12:43 PM
#1
Le Mans Master
Thread Starter
Were these pistons used in 70-71 Corvettes?
Hi Guys, I ran across an NOS set of GM TRW pistons for a 454 stamped "GM" "3963550", .....I guess they are out of a 70 Chevelle LS-6 but were they used on Corvettes?..........Thanks and stay safe, john
12-28-2009, 02:51 PM
#2
Melting Slicks
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avalonjohn,
1970 LS-6 pistons had a dome height of .300 and a closed chamber configuration style, while the 1971 LS6 piston had a dome height of .095 and a open chambered style configuration. That accounts for the 11:25 to 1 compression on the 1970 versus the 9:0 to 1 on the 1971.
1970 LS-6 pistons had a dome height of .300 and a closed chamber configuration style, while the 1971 LS6 piston had a dome height of .095 and a open chambered style configuration. That accounts for the 11:25 to 1 compression on the 1970 versus the 9:0 to 1 on the 1971.
12-28-2009, 05:04 PM
#3
Le Mans Master
Thread Starter
avalonjohn,
1970 LS-6 pistons had a dome height of .300 and a closed chamber configuration style, while the 1971 LS6 piston had a dome height of .095 and a open chambered style configuration. That accounts for the 11:25 to 1 compression on the 1970 versus the 9:0 to 1 on the 1971.
1970 LS-6 pistons had a dome height of .300 and a closed chamber configuration style, while the 1971 LS6 piston had a dome height of .095 and a open chambered style configuration. That accounts for the 11:25 to 1 compression on the 1970 versus the 9:0 to 1 on the 1971.
12-28-2009, 05:22 PM
#4
Melting Slicks
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avalonjohn,
Only the '70 Chevelle LS-6. The 1970 LS-7 engine used a 12:25 to 1 open chamber style piston with higher dome height than the 1970 LS-6 piston.
Only the '70 Chevelle LS-6. The 1970 LS-7 engine used a 12:25 to 1 open chamber style piston with higher dome height than the 1970 LS-6 piston.
12-28-2009, 05:36 PM
#5
Le Mans Master
Thread Starter
Thanks, I picked them up thinking they might be Corvette.....Still nice though I hope, they are GM NOS........just gotta find someone with a Chevelle!!! Take care, and thanks!
