gt40 heads or gt40p?

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07-15-2006, 03:34 AM

89GTRed

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gt40 heads or gt40p?

Which heads are the good ones and which are stock? is this a legit 40 hp as the add claims or is that bull?

http://cgi.ebay.com/ebaymotors/GT-40...06365994QQrdZ1

07-15-2006, 03:37 AM

gspfunk

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RE: gt40 heads or gt40p?

You should see at least 40 from those...maybe not at the rear wheels, but possibly. That's not too bad since the rockers come w/ it....

07-15-2006, 03:47 AM

89GTRed

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RE: gt40 heads or gt40p?

also will these 94 cobra heads match up on a 89?

07-15-2006, 03:52 AM

gspfunk

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RE: gt40 heads or gt40p?

Yuppers. I would recommend getting ARP head studs. Do NOT reuse your stock head bolts....bad idea. Also get some graphite Felpro head gaskets (at least).

07-15-2006, 04:03 AM

89GTRed

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RE: gt40 heads or gt40p?

good stuff. thx for the tips and info. i owe ya 1. [sm=icon_cheers.gif]

07-15-2006, 04:12 AM

gspfunk

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RE: gt40 heads or gt40p?

No problemo!

07-15-2006, 04:21 AM

89GTRed

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RE: gt40 heads or gt40p?

[sm=smiley32.gif][sm=smiley20.gif]

07-15-2006, 07:24 AM

rsw007

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RE: gt40 heads or gt40p?

on stock 5.0's first engine restriction is the intake then the heads. 25hp gain with heads and 40+ with intake and heads.

07-15-2006, 07:46 AM

89GTRed

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RE: gt40 heads or gt40p?

is there a big difference between the cobra/explorer intake and the stockers? or if i am going to get new intake is it only worth it if i get trickflow/holley/edelbrock?