Flat Top Pistons
Thread Starter
Racer
Joined: Oct 2007
Posts: 284
Likes: 6
From: Palm PA
Flat Top Pistons
Can I use regular or mid-grade gas in a 383 with 6" rods and flat top pistons? The heads are stock 64 cc GM cast iron. I have a lathe to dish the pistons for a lower cr. If I retard the timing slightly can I use the flat top pistons without dishing the pistons?
Thanks 68 Vetteman
Thanks 68 Vetteman
Pro
Joined: Mar 2002
Posts: 511
Likes: 0
From: St. Louis MO
Gonna need a little bit more information, how thick is your head gasket, how below the deck of the block are the pistons, what cam are you using, what compression ratio do you think you have now, do your pistons have 2 or 4 valve relief and how many cc's are the reliefs?
Odds are if you have a decent lopey cam and you might be able to get away with mid grade.
Odds are if you have a decent lopey cam and you might be able to get away with mid grade.
Thread Starter
Racer
Joined: Oct 2007
Posts: 284
Likes: 6
From: Palm PA
Gonna need a little bit more information, how thick is your head gasket, how below the deck of the block are the pistons, what cam are you using, what compression ratio do you think you have now, do your pistons have 2 or 4 valve relief and how many cc's are the reliefs?
Odds are if you have a decent lopey cam and you might be able to get away with mid grade.
Odds are if you have a decent lopey cam and you might be able to get away with mid grade.
Thanks 68Veteman
Le Mans Master
Joined: Apr 2005
Posts: 6,347
Likes: 418
From: Seattle Area WA
Since you are starting from scratch, use two valve relief pistons or you may even need small dished pistons which work excellent with small chamber heads. Just do your math and target your compression approximately 9.75:1 with that cam.
Thread Starter
Racer
Joined: Oct 2007
Posts: 284
Likes: 6
From: Palm PA
Thanks 68 Vetteman
Melting Slicks
Joined: Apr 1999
Posts: 2,010
Likes: 3
From: Moon Twp. PA USA
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