Can I use E7 springs on my GT40-P?

C

cmclean

Founding Member

Dec 18, 2000

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Houston, TX

Dec 30, 2003

#1

• Dec 30, 2003

• #1

Well, it might be a stupid question. But I'm assembling a shortblock, and just bought a bare set of GT40-P heads for $150. I have a set of E7's off a 1994 5.0 with about 40,000 miles on them. Can I use the springs from the E7's and put them on the GT40-P?

I'm going to run a E303 cam with 1.6 rockers.

I know I need new intake valves, so I'll probably just buy a set of Ferrea or REV 1.84/1.55 valves. Or should I just cough up the 99.95 and buy a set of Ford Racing GT40 springs?

 

Jerry Leaming

Member

Nov 2, 2003

477

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Olympia Wa

Dec 30, 2003

#2

• Dec 30, 2003

• #2

I would buy new springs/locks/retainers just to be safe.
The springs would probably work fine if the install heights are the same but used springs are still just that used.

 

mike keirstead

New Member

Aug 6, 2003

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Dec 30, 2003

#3

• Dec 30, 2003

• #3

Yep get the springs....the E7s have crappy springs on them.

 

joeracer321

Founding Member

Nov 2, 2002

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Southern California

Jan 1, 2004

#4

• Jan 1, 2004

• #4

I don't know why you would want to. That is a lot of work to not swap valvetrain parts. If you have anything bigger than a stock cam, new parts are critical. I had regular gt-40 heads and I though the parts would be good enough for an e cam... but a lock sheared and dropped the #8 intake valve into my cylinder. In my opinion get a good valvetrain kit. It comes with all the stuff you need and it is a little over a hundred bucks.. Good luck.

 

mike keirstead

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Aug 6, 2003

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Jan 1, 2004

#5

• Jan 1, 2004

• #5

Check out 44308-1 crane kit for 113 at summit. Thats what i have.

 

mike keirstead

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Aug 6, 2003

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Jan 1, 2004

#6

• Jan 1, 2004

• #6

You can replace the springs for under 200...or replace a few valves and whatever else breaks when the thing lets go. Valve springs are way overlooked. They really wake a motor up. They help valvetrain geometry stay healthy. Everything is opening and closing when its supposed to. I noticed a big difference in revving capabilities after i installed The 44308-1 CRANE kit on my gt-40s.