gt40 head valvetrain upgrade

jammer84_03

New Member

Nov 30, 2003

468

1

0

May 13, 2006

#1

• May 13, 2006

• #1

i got a set of real gt40 head comming my way with the crane / ford stamped 1.7's. now i know the heads have some wear on them and i dont want to have valve float at the upper limits. just looking for a cheap and pratical upgrade through comp or something equivilant. springs are all i am after for now and would put them on in a couple of weeks after driving. any help on what to get is really appreciated....thx

 

DeadLifter

Member

Mar 1, 2006

183

2

19

Portland, IN

May 13, 2006

#2

• May 13, 2006

• #2

http://www.steeda.com/store/-catalog/valvespringkit.htm

 

jammer84_03

New Member

Nov 30, 2003

468

1

0

May 13, 2006

#3

• May 13, 2006

• #3

do you know who makes the springs...i do what something with a good rep behind it that is tried and true...not to say steeda isnt good or anything

 

RYC CUKR

Founding Member

May 19, 2002

1,437

1

38

Orlando

May 13, 2006

#4

• May 13, 2006

• #4

Trick flow also makes an upgrade kit for Ford iron heads. It will work on E7s, GT40 and GT40Ps. I used them on my P heads since I was going with a larger than stock cam. part # is TFS-2500100 and they are good to .542" lift cams. Comes with springs, shims, retainers, locks, tool to check installed height and valve seals.

 

DeadLifter

Member

Mar 1, 2006

183

2

19

Portland, IN

May 13, 2006

#5

• May 13, 2006

• #5

You can go to steeda.com and look I believe they're Ford Racing springs.
These should work too.
http://store.summitracing.com/partdetail.asp?autofilter=1&part=CRN-44308-1&N=0&autoview=sku

 

jammer84_03

New Member

Nov 30, 2003

468

1

0

May 14, 2006

#6

• May 14, 2006

• #6

ok....ya..im just worried about the e cam i got in it and the old tired springs....i dont think i will have a problem with the valve to piston clearance.

 

rd

Founding Member

Jan 12, 2000

3,316

63

109

Ocean Springs MS

May 14, 2006

#7

• May 14, 2006

• #7

If you have aftermarket iron GT40's, you should not have exhaust valve rotators, and you should be ok to 6000 rpm with the springs that came on them.

If you have a take of set from a Lightning or Cobra that has the exhaust valve rotators, you have some issues to address.

The intake and exhaust valves have the valve groove at different heights. You need different exhaust retainers. O50 offset.

I used all Comp Cams stuff, and 972 springs I think. Runs to 6000 easily. Call them, and they will make it easy.

 

jammer84_03

New Member

Nov 30, 2003

468

1

0

May 14, 2006

#8

• May 14, 2006

• #8

i got a set off of a cobra...the irons....what all do i need to do...the valve grove in the actual valve....i think i know what you are talking about. so i should just contact them directly, tell them what i got and go by their recomendation?