Vintage Mustang Forums banner
1 - 3 of 3 Posts

·
Registered
Joined
·
14 Posts
Discussion Starter · #1 ·
I have a 66 mustang that I am swapping a 68 302 into. I bought a pair of GT40 heads, not gt40p, and I was looking to see what all I need to make them fit on my motor that has a .475/.475 cam, flat top pistons, and a weiand stealth intake manifold? I was planning to use JEGS long tube headers 555-300130.
 

·
Registered
1967 Mustang Convertible
Joined
·
1,244 Posts
You will need Pedestal mount Rockers, pushrods, and gaskets. Everything else bolts up the same. They come with 64cc chambers so you will lose a little compression but flow better then stock heads, like 351w heads.
 
  • Like
Reactions: 2nd 66

·
Registered
Joined
·
22,094 Posts
You will need pushrods for 78 to mid 80's 302/5.0 with flat tappet cam. You will also need inserts on the end of the head to seal off the Thermactor port. They're cheap. That's about it. You will loose some compression but the added flow should more then offset that.
 
1 - 3 of 3 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top