Just wondering what the difference is between E7 efi and F3 efi heads as I am about to purchase a set. Could some one maybe provide a listing of efi heads and combustion chamber sizes.
Thanks Steve.

 

I would like to see that list also... Anyone?

Have a great day!
Mike
95 F-350 Extended Cab Dually 460/E4OD
Too much done to list here but I'll be glad to share if you ask me!

 

One difference I know of is that one or both valves are bigger in the 93 heads. Other messages here imply that the ports (passages) are different, but I have no personal experience with that.

Ludis

 

I looked up the valves sizes:

Early intake:1.965-1.989
Late intake: 2.075-2.090
Exhaust (both): 1.646-1.661

Ludis

 

Thanks for that it is very helpful. I am wondering if anybody could expand on the different ports between D7TE, D8TE and F3TE???
Steve





85 F350 4x4 250ci (soon to be 460ci running dual propane convertors and gas research mixers)
79 F350 351C 4speed
73 XA Coupe 351C 4v High port heads C6 9" 3.89 Close to 600HP To many other mods to list.
81 TF Cortina 250ci 5speed 4pinion LSD 13.2 sec Q-Mile (straight propane) 425 Impco mixer bolted onto 750DP Holley baseplate.