302 engine block comparison pictures

Reply #15 – January 07, 2011, 05:48:50 PM

I had a set of 69-70 DOZZ heads on the first motor in my Coupe and what I put into them to make the work sort of good I should have just popped a set of Edelbrock Performer RPM's and have been done with it. Now if you can port them yourself then that might help but once you put valves, springs, keepers, retainers, and shims on them not to mention having them decked to make sure they are square you have spent a chunk of change and that is if you got them free. They still flow like until you open up the pockets behind the valves and get rid of the thermactor hump in the intake passage. The car put down 249 rwhp / 289 ft-lbs of torque but not worth it in my opinion. Same motor with stock Edelbrock Performer RPM's went 272 rwhp / 292 ft-lbs of torque. Bolted them on and did not touch them and the cost was the same and I got better performance. This was my experience though. If I had it to do over I would have bought bare castings and had the guy that does all my machine work port them and then dress them out with Manley valves, keepers, & retainers, Isky springs, and ARP studs that are the correct length for a Ford. This is what I had to do later down the road (minus the porting) so again I spent even more money. Sucked but the car is now 315 rwhp / 323 ft-lbs of torque and the little Coupe makes some bacon with that. I have an Ed Curtis custom cam for the car but I still need to port the heads so it will be later this Spring before I tear it down again...Tax Return money!!!

Darren

302 engine block comparison pictures

Reply #16 – January 11, 2011, 01:25:07 AM

Quote from: Kitz Kat;348755

I would take 69-70 351 heads over E-6 or 7's any day. Not thrilled with the push in studs, but that can be fixed.

I should have said modern aftermarket aluminum heads