New Windsor, old GT40
FTE Legend
Joined: Jun 2006
Posts: 31,930
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From: Ottawa, Ontario
Originally Posted by 91 F-150 Farm Truck
I'm buying a set of 70s GT40 heads. How well will the match up to my 89 351 EFI block?
Originally Posted by 91 F-150 Farm Truck
I know of course I'd have to get injector holes bored.
Elder User
Joined: Jun 2004
Posts: 800
Likes: 6
From: Edmonton, Alberta Canada
they are a pretty decent choice. probably about 3rd best choice behind GT40P and GT40 heads as far as factory iron go.
has larger valves (1.84 intake) and larger ports than 302 and later 351 heads and slightly smaller chamber, 60 or 64 cc if not mistaken.
a little port work (especially on exhaust side) and a good 3 angle valve job and will be pretty decent heads for a street engine.
the injector holes are in the manifold, not the heads. unless you mean for the smog pump.
rgds
Mike
has larger valves (1.84 intake) and larger ports than 302 and later 351 heads and slightly smaller chamber, 60 or 64 cc if not mistaken.
a little port work (especially on exhaust side) and a good 3 angle valve job and will be pretty decent heads for a street engine.
the injector holes are in the manifold, not the heads. unless you mean for the smog pump.
rgds
Mike
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