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GT-40 Ford Heads
The GT-40(P) cylinder head is popular for classes that must run a stock Ford production head.
Like other stock castings, there is plenty of room for improvement with this head.
Stock air flow on this head tops out at 195 cfm intake and 130 cfm exhaust.
When "UnderCover Ported", the GT-40 head will flow 213 cfm intake and 145 on the exhaust side.
Part# Description Your Cost
UC-GT40 "UnderCover Porting" to GT-40 heads 995.00 labor only to 1 pair of heads
Windsor Jr & Sr. heads.
Part# Description Your Cost
W/JR-UC Windsor Jr. castings with "Undercover Porting" $1,495.00 pair, bare.
W/SR-UC Windsor Sr. castins with "UnderCover Porting" $1,495.00 pair, bare.
W/SR-CNC Windsor Sr. casting with CNC Sportsman $1,695.00 pair, bare.
porting.
289/302 Ford Heads:
The Ford 289/302 heads were available with many different valve sizes.
We have reworked several sets of these heads for applications where no porting is allowed.
Stock air flow intake is 166 cfm. With "UnderCover Porting" the intake side is improved to 190 cfm.
The same 1.780" intake valve was used in each test.
On the exhaust side improved from 124 cfm to 137 cfm with "UnderCover Porting". The valve size for the exhaust was 1.450".
Part# Description Your Cost
UC-289 "UnderCover Porting" to 289/302 Ford heads. 895.00 labor only to 1 pair of heads
CNC Sportsman Porting to 351W Heads.
Stock 289/302 heads will improve from 184 cfm stock to the 205/210 cfm range on the intake side and the exhaust improves from a stock flow figure of 120 cfm to over 150 cfm with our CNC Sportsman Porting.
Part# Description Your Cost
289-CNC CNC Sportsman Porting to 289/302 or 351W style castings. 1,595.00 labor only to 1 pair of heads
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