[quote thumper460]A guy had almost 900.00 in GT40s getting them the basic mods.. ( see stangnet) with out any flow work. SOooo... a good deal is only as good as you want it to be... And this autozone thing is a good place to start!! cool?? BUT.... in the statements above.." high dollar stock heads ", could be, IF you dont want the add'l power over the 40s and not want to run a iron head... But you really need to call the local performance machine shop and see what the 40s are going to cost to get them rocking ready!! and maybe a gasket match and performance valve job!! it might amaze ya!! cool??[quote thumper460]
(stuffs arm in T-shirt, old school bart simpson style) And I was that boy.
I paid 550$ on top of purchase price ($400) for a .035 shave, tanked, mag.flux, valve job, and comp cams beehive .550 lift springs. All the valves and guides were good thank god. Now in retrospect it would have been ALOT better to have thumper port and work the heads first as he does a (smaller) shave, springs,valve job (and checks the valves). So for that aspect alone thumpers work is a good deal.
One thing I never quite get from the thumper bashers, is that they compare them to the AFR (avg. price is what $1,200 v. $550-600 shipped), now well no one is comparing them to AFR's just unported GT40/GT40P's that are way off from even AFR 165s. I think that if you are running an unported gt40 style intake or a Tmoss stock lower and dont want to go any further into the engine (or even a smaller aftermarket ie. .480-.490 lift cam) you will have a realy good running setup for cheap with the thumper E7 head.
AND as an owner of Tmoss stock lower, stock gt40 lower and Tmoss gt40 lower, the Tmoss stock lower was a dead match to the intake ports on the GT40 heads, and that is what Thumper opens the E7's up to. Also the Tmoss lower is about the same port size as the gt40 unported so that intake would also be a good match.
Now my final thing is the Thumper ported GT40's, what they flow is very close to the AFR 165's ( 230cfm range intake) and that may be a "new twist" on the debate. However, the ported GT40's do have a smaller runner size that will make better power lower (smaller runners make more low end and less top end, and the heavy sn95 cars need that) and the AFR 165's should have more at the upper RPM's. But the real numbers are about a month off for me on my ported gt40 heads so the jury is deff. out and I dont think there are that many people running them.
Not knocking the AFR guys, those heads are nice, just I am a college student who wants to see what I can get out of Ford production stuff and a mild/aggress. mild cam on this car. I have no disire to go any faster than what this setup will allow me.
My .02 or well $1.50
sorry for the long post.