Looking for some input for this winter's project.
Have a 68 J code 302 with standard .030 rebuild . Engine internals consist of a crane 260 cam (260 duration, .456 lift, 1400-4600rpm), 4v heads which should be 53.5cc
This was done back in the 80's and for the life of me I can't remember what pistons were used. I'm pretty sure the compression was 9:1 max.
Anyway,have a set of Thumper ported E7 heads Thumper of Orange Park
and wonder if I should bolt these on? I picked them up locally for a good price and they have never been used.
The E7's have a 63cc chamber vs 53.5cc on the 68 4V heads. I can probably mill the E7's to 60cc maybe even 58cc if I push it. Question is....would you do this? I'll probable drop down to 8.5 to 8.75 compression. Will the greater flow of the E7 heads justify the switch?
OR
Just sell these and buy a pair of AFR's and have them milled to 54cc's and be done with it.
Thanks,
Andrew
68 conv Mustang
Have a 68 J code 302 with standard .030 rebuild . Engine internals consist of a crane 260 cam (260 duration, .456 lift, 1400-4600rpm), 4v heads which should be 53.5cc
This was done back in the 80's and for the life of me I can't remember what pistons were used. I'm pretty sure the compression was 9:1 max.
Anyway,have a set of Thumper ported E7 heads Thumper of Orange Park
and wonder if I should bolt these on? I picked them up locally for a good price and they have never been used.
The E7's have a 63cc chamber vs 53.5cc on the 68 4V heads. I can probably mill the E7's to 60cc maybe even 58cc if I push it. Question is....would you do this? I'll probable drop down to 8.5 to 8.75 compression. Will the greater flow of the E7 heads justify the switch?
OR
Just sell these and buy a pair of AFR's and have them milled to 54cc's and be done with it.
Thanks,
Andrew
68 conv Mustang