What size dome piston
Thread Starter
Burning Brakes
Joined: Feb 2009
Posts: 780
Likes: 1
From: Shelby NC
What size dome piston
Mid 70's 350 bored 040 over using 882 heads, how much should the dome size be to get a 10 to 1 comp ratio or close to it. The block has not been decked. Heads checked out good shop checked them and ground the valves. Thks for any advice....
Burning Brakes
Joined: Feb 2005
Posts: 894
Likes: 91
Thanks, Gary in N.Y.
P.S. The one problem with building it this way is you won't be able to ever change over to any 64 cc heads later without running race fuel!!
Race Director
Joined: Jul 2015
Posts: 13,082
Likes: 3,399
From: SW Florida.
Just buy proper heads. Unless the 883 have yo be there for numbers. But the OP needs to calculate domes and chambers himself. Sort of homework assignment. Need to know how you got to a certain CR and had some input in the process...
Last edited by derekderek; Aug 1, 2018 at 06:45 PM.
Le Mans Master
Joined: Mar 2004
Posts: 7,465
Likes: 1,485
From: Little Rock AR
Derek is not wrong, and Gary knows his stuff for sure.
My 2 cents - I would never re-install those 882's on anything unless it was a station wagon. Big chambers with big domes is not the answer.
Get SOMETHING better for heads and let the rest match your target. Those 882 heads are the worst parts you have under the hood. Smaller 64cc chambers will get you to 10:1 with ease and run hard.
My 2 cents - I would never re-install those 882's on anything unless it was a station wagon. Big chambers with big domes is not the answer.
Get SOMETHING better for heads and let the rest match your target. Those 882 heads are the worst parts you have under the hood. Smaller 64cc chambers will get you to 10:1 with ease and run hard.
