383 stroker compression questions
Thread Starter
Staging Lane
Joined: Aug 2017
Posts: 74
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383 stroker compression questions Need help with compression on a 383 LS1 stroker build
Specs:
TSP 4.00" stroke crankshaft
TSP H beam 6.125" connecting rods
APR 2000 rod bolts
Mahle -6cc dished pistons
706 ported heads
240/248 .608/.612 lsa 112 comp cam
Wanting to keep the compression above 11 but below 12. Im really confused on how to figure out the numbers.
Specs:
TSP 4.00" stroke crankshaft
TSP H beam 6.125" connecting rods
APR 2000 rod bolts
Mahle -6cc dished pistons
706 ported heads
240/248 .608/.612 lsa 112 comp cam
Wanting to keep the compression above 11 but below 12. Im really confused on how to figure out the numbers.
Use summit calculator from their website
FYI. The LS1 blocks have the shortest sleeves and tend to be oil burners as the pistons “rock” considerably at BDC. the LS2/3 or iron LQ blocks offer more support for the pistons to minimize the rocking which flutters the rings.
TSP has great kits. But do your homework and bend their ears as well. There are smarter options
FYI. The LS1 blocks have the shortest sleeves and tend to be oil burners as the pistons “rock” considerably at BDC. the LS2/3 or iron LQ blocks offer more support for the pistons to minimize the rocking which flutters the rings.
TSP has great kits. But do your homework and bend their ears as well. There are smarter options
TECH Senior Member
Joined: Feb 2009
Posts: 5,445
Likes: 4
I'm kind of in the same boat OP.what is you deck height ? was the block decked ? what is the piston diameter ,and compression height ? Diamond racing piston has a static compression calculator .my ls 388 is 0 decked with a Mahle piston ,3.905 ,1.105 CH,and -6 cc valve reliefs .I ended up with 11.1-1 with .036 head gasket .I found a dynamic compression calculator to try and find a good cam for my goals .I get so over whelmed cam numbers .