I'm just wondering what your combo is and what you run in the 1320. I'd like to build up a mild combo using the Thumper heads as a starting point and just wanted to see what you guys all have. Thanks!
I'm running his heads but I haven't had time to get to the track or dyno yet.I've gotta say that my motor feels very strong and responsive.In talking to Thumper before buying he figures I should be into the 12's easy with my combo.Here it is:
.020" over 302
balanced and blueprinted
arp rod bolts
forged flat top speed pro's
cobra intake
24lb. injectors
70mm tb
73mm c&l mass air meter
motorsport f-cam (adv. 4deg.)
motorsport roller rockers
t-5
3.73's
a/c delete
mac 1-5/8 shorties
off road h-pipe
2 chamber flowmasters
87GT
190 lph pump
I am running those heads and run the times in my sig with 17" drag radials. I think you would see a real gain if you sent the lower intake to TMOSS for a port job and then you would really see some gains.
Thanks for the advice guys. Here is what I would like to do:
Thumper heads
Tmoss ported lower
65MM TB
ARP head bolts
fuel pump upgrade (not sure to what rating yet)
complete Ford racing master gasket set
I should be able to keep the 19lb injectors, right? I don't think there will be too great of an increase in fuel demand to need to upgrade, but I could be wrong.
From what I've read, keeping speed density shouldn't be a problem.
If the Thumper heads are shaved, will I have to worry about pushrod length?
Any advice you guys can give is really appreciated!