When I got these heads I wasnt sure if they were 60 or 70 cc and I just checked them and they are 70cc. I need to get them to about 60-62 cc's. Is that posible to do with out hurting anything? I was shooting for a 10 or 10.5:1 cr. Whats a good cr for a streed drivin car with a tfs3 cam on pump gas? It's cost a good amount to deck the block but if it needs to be done then I have no choice.
Here are the cam specs
236 intake/ @.050
248 exhaust
.359"/.372" cam lobe
.574"/.595" with 1.6
110 lsr
This is my specs as of now.
-----------------------
4.030 bore
4.10 stroke
70 head cc
0.039 head gasket
.025 in the hole on deck, I get a 9.77:1 with a 0 deck
-19.3 piston
9.35:1 cr
------------------
4.030 bore
4.10 stroke
64 head cc
0.039 head gasket
.025 in the hole on deck, I get a 10.37:1 with a 0 deck
-19.3 piston
9.86:1 cr
----------------------
4.030 bore
4.10 stroke
60 head cc
0.039 head gasket
.025 in the hole on deck, I get a 10.8:1 with a 0 deck
-19.3 piston
10.25:1 cr
Here are the cam specs
236 intake/ @.050
248 exhaust
.359"/.372" cam lobe
.574"/.595" with 1.6
110 lsr
This is my specs as of now.
-----------------------
4.030 bore
4.10 stroke
70 head cc
0.039 head gasket
.025 in the hole on deck, I get a 9.77:1 with a 0 deck
-19.3 piston
9.35:1 cr
------------------
4.030 bore
4.10 stroke
64 head cc
0.039 head gasket
.025 in the hole on deck, I get a 10.37:1 with a 0 deck
-19.3 piston
9.86:1 cr
----------------------
4.030 bore
4.10 stroke
60 head cc
0.039 head gasket
.025 in the hole on deck, I get a 10.8:1 with a 0 deck
-19.3 piston
10.25:1 cr
