Classic Mustangs (Tech) Technical discussions about the Mustangs of yester-year.

E-street heads

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Old Nov 8, 2009 | 01:28 PM
  #11  
THUMPIN455's Avatar
THUMPIN455
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From: Marquette Mi
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Originally Posted by Starfury
I agree completely with Thumpin. Get pushrods separate after you've measured for proper length.
Reading minds again bro? I agree with Ez too, been thinking about trying a set of these heads on a Ford and also a 400sbc that is going in a truck. From what I have seen is they are a little better than a stock replacement head, a little more power in the chevy over Vortec heads, but that means squat with a Ford. Might put a set on the F150 4x4 I use as a winter truck, it needs more power and a 347 on the cheap would be nice in that thing.

You really need the proper pushrod length, and for some reason Fords are very sensitive in that area even with adjustable valvetrains. There is no way to know where your length ends up due to variances in the blocks deck height, cam height, head gaskets, and the heads themselves. You have to put the thing together then use a pushrod length checker to find out what length pushrods you need. A one size fits all kit will often end up with extra parts you dont need because they wont fit. I have a bunch of bearings and a couple ring sets left over because the part wouldnt clean up at that size.
Old Nov 8, 2009 | 02:26 PM
  #12  
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Timetravelinn
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From: California
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Thanks for all the input guys. I was shocked too about having to spend like a extra 500 bucks to install the heads. I was also under the impression that I would spend the money on the heads and maybe just have to spring for the gaskets if the heads were complete.

As for push rods everyones advise makes sense to get adjustable. Rockers I'm assuming the same thing you get what you pay for so I would want some quality rockers also.

But can I really just grab some gt40 heads off a explorer and gain an extra 40 horses. If thats the case I might be looking to go in that direction. I'm assuming the ones on the explorer are cast iron what's everyones thoughts on the aluminum ones they sell after market they're about the same as the e-street in price.

Afr heads would probably be my first choice but they're like 1400.
Old Nov 8, 2009 | 08:18 PM
  #13  
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Starfury
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From: Elk Grove, CA
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Originally Posted by THUMPIN455
Reading minds again bro?
lol, oops. Been a stressful couple days, my mind isn't exactly where it should be.

Yes, TT, you can get good gains from a set of GT40 heads off a 95-96 Exploder. 97+ Explorers use GT40P heads which have altered plug angles. This puts the plugs smack into the header tubes on one side on classic applications. There are only two places I'm aware of that make headers for classic Mustangs with P heads, and both are very pricey (but high quality). Not that P heads aren't good heads, they're just a PITA in swap applications.

If you're interested, I can send you to someone who can get you some Trick Flows for fairly cheap. Same guy that got me mine
Old Nov 9, 2009 | 08:01 AM
  #14  
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kalli
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From: Cork, Ireland
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a nice surprise you'll get with aluminum heads is that the engine gets lighter. This made a _huge_ difference to my manual sterring. it got a lot lighter
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