Brandontyler65

so i found out that the PO had a **** poor rebuild done on the motor (289) and there were no hardend valve seats installed so i have been wondering why my car has been idling like crap and progressivly getting worse so i do a leak down test and its my valves so i am using this as an excuse to get some heads and i was thinking gt40 not p cause i don't wanna dick with the plugs any way i want to keep my compression ratio so i have to get the heads milled down a bit but i need to know if there will be any clearance issues (i don't think so cause i will leave my stock cam in for now its a money thing) and what all i will need and need to do i am prolly gunna pull from junk yard so i am gunna clean them as much as i can then take to machine shop get them worked on there then i need to know what push rods i will need and what head gasket to use and if memory serves these heads will have emission holes so they will need to be plugged right so how do i plug them and what spark plugs will i need

rmodel65

certain years i believe dont have emission ports but i believe u use the stock pushrods for ur motor and it uses the standard 289/302 head gaskets gaskets

Brandontyler65

sweet even though i get discount i want to save money for a newer car as a dd so i can really work on the mustang and so its not my only meas of transportation and i shouldn't have clearance issues right

rmodel65

check out 84-86 mustang svo they are nice handle extremely well get great mileag 35on the road and are just as quick as a stock 5.0

Brandontyler65

i know that but in the mean time i need heads to get to and fro work so i fig i would get something nice like gt40 heads but i wanna know of any issues with them bolting up to a 289

valley firearms

They bolt right on with no clearance issues. I have them on my 68.

Soaring

Try the Motorcraft/Autolite B-45 plugs. They are a tad hotter than the 42's.

Brandontyler65

and i won't have clearance issues with them being milled down