TexasRoadRunner68
Well-Known Member
I have spoken with Hughes, who designed the cam I am considering using. They recommended it for a 500+ CI motor with 11:1+ compression and mechanical secondaries on the carb.
My 400 block just got checked and is good for the bore needed for the stroker kits. (4.375 I believe)
I do plan on using aluminum heads, which I hear can basically “take off a point”.
Hughes sells a 400-511 kit that would put me at 11:1 without zero decking the block. 440 source offers a 400-512 kit that could be 10.5:1.
I will post a photo of the cam card. Hughes seemed to think with the low altitude here and the abundance (as of now) of 93 octane gas, that 11:1 on pump gas would be doable.
The car won’t be a daily, but will probably see more street than track. Would you say 11:1 could work safely with the cam, or is it better to try 9.5-10.5?
I have heard some people say 11:1 makes the tuning window very narrow, however there are plenty of cars from the era that cam with 10.5:1 and iron heads back then. I’m assuming it should be fine, but I just want to verify.
My 400 block just got checked and is good for the bore needed for the stroker kits. (4.375 I believe)
I do plan on using aluminum heads, which I hear can basically “take off a point”.
Hughes sells a 400-511 kit that would put me at 11:1 without zero decking the block. 440 source offers a 400-512 kit that could be 10.5:1.
I will post a photo of the cam card. Hughes seemed to think with the low altitude here and the abundance (as of now) of 93 octane gas, that 11:1 on pump gas would be doable.
The car won’t be a daily, but will probably see more street than track. Would you say 11:1 could work safely with the cam, or is it better to try 9.5-10.5?
I have heard some people say 11:1 makes the tuning window very narrow, however there are plenty of cars from the era that cam with 10.5:1 and iron heads back then. I’m assuming it should be fine, but I just want to verify.