gt40 heads

  1. 93CalypsoConvert

    Engine New Cam or Different Rockers?

    I've been considering doing some power upgrades to the 302 and I'm debating weather to go with a new cam or go with 1.7 rockers... Its a carbureted '85 HO running flat tappet currently. Nothing is done besides emissions removal. I WILL put either a pair of GT40 or GT40p heads on before this. New...
  2. R

    Fox GT40P Heads Exhaust Setup

    Im sure this has already been answered, but it's hard to find a straightforward answer on the interwebs. I wanted GT40 heads, but junkyard had the P's for 70 bucks so here I am. I know about the sparkplug situation, and atleast I know I need 90* boots. Speaking of which can someone send a link...
  3. M

    Engine Trickflow Stage 1 Cam on GT40 heads

    Hey, new to the forums. Been looking around and haven’t found much info on this combination but I was curious if it would be a smart idea to put the stage 1 cam in with custom gt40 heads. The guy I’m purchasing them from says the heads have a max valve lift of .475 and I believe the stage 1 is...
  4. B

    86' 4 eye 306 carb. Built. Overheating

    Ok, I bought me a 86 mustang with a 306 carb engine. Holley 4 bbl, edelbrock performer air gap intake, gt40 heads with comp cam alumi saver roller rockers 1.6, edelbrock long tube 4 to 1 headers into single chamber flows. That being said I purchased the car with an overheating problem. The...