can i mill gt40 with stock short block and e cam?

That all depends on what your piston to valve clearances are. I am in the process of milling my p heads down .020-.030 to pick up a half a point of compression. In the end I will be over 10:1. I believe the regular gt40 heads have bigger chambers than p's to begin with, so more milling would be required. With an e cam, and 1.7's you may have some issues, I believe that the lift on your cam is around .5 without the rockers right?? So with 1.7s you have close to .530 lift. I myself have 1.7's on a crower #511, but I have a much shorter duration than you do, and my total lift is .500 intake and .520 exhaust. Some where I heard that one half a point of compression is worth about 15hp, I dont know for sure on that though. Maybe someone else can chime in with more info.
Ted

?

Are you talking about a 4.6 modular motor or a 5.0 pushrod motor? E-cam and Gt-40 is 5 liter.

yea what are u talking about 4.6 or 5.0? 2 different worlds!!

5lterchvyeater said:

yea what are u talking about 4.6 or 5.0? 2 different worlds!!

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ya seriously.

I have gt40's milled .025, and I was told for every .010 milled, I would gain about 1 pont of compression. Being that stock gt40's have 8.0:1, that would being me to 9.5:1. I have no clearance issues, with a TFS stage 1 cam, which is slightly bigger than the E-cam. The only 'problem' I had was that the Typhoon intake didn't seat quite low enough on the valley, and I had to use silicon and the gaskets, which I don't like using (gaskets).

Ourobos said:

I have gt40's milled .025, and I was told for every .010 milled, I would gain about 1 pont of compression. Being that stock gt40's have 8.0:1, that would being me to 9.5:1. I have no clearance issues, with a TFS stage 1 cam, which is slightly bigger than the E-cam. The only 'problem' I had was that the Typhoon intake didn't seat quite low enough on the valley, and I had to use silicon and the gaskets, which I don't like using (gaskets).

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Hey i have the same set up as you. how much power are you pushing?