After I put TW heads on my 351w in my 68, I had planned on putting the 69 351w heads on my 90. But I just recently bought a set of GT40P's for like 60$ and a trade of a nitrous plate.
I'm not really sure which heads I want to go on the 90. If I use the GT40P heads, I believe I can re-use my beehive springs and roller rockers from my E7's. Is this correct? But then I have to find a set of headers too.
If I use the 69 351w heads, I'll either have to use the stock stamped rockers or buy new ones.
They both have the a 1.84 intake valve (vs E7's 1.78), but the the P heads have the same size exhaust valve as the E7 (1.46) while the 351w head has a 1.54 exhaust. It looks like I would gain compression with the 351w head also.
I wonder which one has the better chamber design?
I'm not really sure which heads I want to go on the 90. If I use the GT40P heads, I believe I can re-use my beehive springs and roller rockers from my E7's. Is this correct? But then I have to find a set of headers too.
If I use the 69 351w heads, I'll either have to use the stock stamped rockers or buy new ones.
They both have the a 1.84 intake valve (vs E7's 1.78), but the the P heads have the same size exhaust valve as the E7 (1.46) while the 351w head has a 1.54 exhaust. It looks like I would gain compression with the 351w head also.
I wonder which one has the better chamber design?