so im pretty sure the guides are toast or i have some bad valve train stuff going on with the car. so i found a set of gt40p heads for 200 bucks. im aware of the header fitment stuff and of the fact that i need to drill the thermactor bosses to allow my to hook up my thermactor pipe. this isnt much of an issue as i have full access to my families machine shop to tear into it. i can also mildly port the heads and rebuild them for the cost of parts and my personal time. how do you guys feel about the p's and the price? also id like to get a 94-95 cobra intake so i dont have to deal with elbows and such.
heads
- Thread starter Insayne
- Start date
They are solid heads. If you're not in the market for a new set of aluminum heads, I would absolutely pick them up.
They are worth a solid 20-25 HP increase..obviously more if you are willing to do some port work and bowl work. Install a set of TFS Ford Cast Iron springs and you're good to go :thumbsup:
If you need some direction in what machine work to do for a good increase, just PM me. I have a friend that does port work professionally and got A LOT more performance out of my old GT40's.
They are worth a solid 20-25 HP increase..obviously more if you are willing to do some port work and bowl work. Install a set of TFS Ford Cast Iron springs and you're good to go :thumbsup:
If you need some direction in what machine work to do for a good increase, just PM me. I have a friend that does port work professionally and got A LOT more performance out of my old GT40's.
Well they were cracked so im back at square one 
guy was a moron. Any who I don't think there are any aluminum heads in my budget. I definitely want to throw a cam and roller rockers at it too might as well have the heads set up good. Dunno wether to get 1.7 or 1.6 rockers and if I need different push rods.
guy was a moron. Any who I don't think there are any aluminum heads in my budget. I definitely want to throw a cam and roller rockers at it too might as well have the heads set up good. Dunno wether to get 1.7 or 1.6 rockers and if I need different push rods.You can find some untouched GT40/GT40P heads fairly cheap. If you have a junkyard local...they may have some.
Years ago I sold a set of fully Extrude Honed ($1000) GT40 heads for $400 + shipping. Just gotta look around :tongue3:
Years ago I sold a set of fully Extrude Honed ($1000) GT40 heads for $400 + shipping. Just gotta look around :tongue3:
i picked up my gt40p off another site for $250 plus shipping already set up with compcams 918-16 beehives on them.Took them to my machine shop for a check and he said nothing wrong with them at all put em on and go..Their out their cheap just gotta look around.Made a very decent performance gain with the mac headers and a small cam and i dont have all that much money into all of it.
95MustangGT
Member
I bought a complete engine out of a V8 Explorer for $450. Took the heads and intake off and then sold the block with my E7's for $300. It was one of the best scores I've had so far.
