Camshaft question!

[Witzy0070]

Ok, so I am looking at camshafts for my H/C/I swap.

I will be using a Explorer upper and lower intake and brand new GT40 heads.

Now I have been debating over a E303, a Steeda #19, and this http://www.summitracing.com/parts/CCA-SK31-336-4/ which is what I'd like. How ever I do not know if it's too aggressive, the exhaust duration is significantly longer than the Steeda and Ford camshafts.

All I am looking for is peoples opinions and info.

 

[LAFENATU]

Ok, so I am looking at camshafts for my H/C/I swap.

I will be using a Explorer upper and lower intake and brand new GT40 heads.

Now I have been debating over a E303, a Steeda #19, and this http://www.summitracing.com/parts/CCA-SK31-336-4/ which is what I'd like. How ever I do not know if it's too aggressive, the exhaust duration is significantly longer than the Steeda and Ford camshafts.

All I am looking for is peoples opinions and info.

You can't use that cam. It is a flat cam, not a Hydraulic Roller.

 

[Witzy0070]

Awesome.

 

[LAFENATU]

The TFS Stage 1 cam works well with GT40 heads. Make sure you have upgraded valve springs on the heads with an aftermarket cam.

 

[Witzy0070]

Well I prefer the specs of that cam more than the others. Going to go for that one. Thanks!

 

[blackpony]

i wouldnt recommend the steeda cam. I have it and have not been impressed with it... I second the trickflow stage 1...

 

[birel21y]

Im running the Crane 2040 PowerMax Cam (same spec as E303) in my explorer longblock im building right now. With 1.7 rockers its a lot of lift, almost too much. Here is my setup:

http://cranecams.com/?show=browseParts&lvl=2&prt=5&Vehicle_Type=Auto&Cylinders=8&Engine_Make=FORD-MERCURY&Year=1994&Engine_Size=302%20C.I.&partNumber=444231&partType=camshaft


2000 Explorer long block
GT40 "p" Heads
light intake port job (gasket match heads, gaskets, and intake)
Crane 2040 PowerMax Cam
Billet true dual adjustable roller gears/chain
Cam timing advanced 2*
Flow Kooler High Vol. water pump
Melling high Vol. oil pump
Proform Pickup
Proform 7 qt. oil pan
Felpro 1 pc. silicone oil pan gasket
FMS lifters
FMS pushrods
Crane cams 1.7 rockers
Prothane Poly engine mounts
ARP bolts throughout
FMS black/red valve covers
TFS track heat intake
1" phenolic spacer
24 lb injectors
TFS valve spring kit w/ chromoly retainers
BBK 75mm TB
Summit 75mm MAF
Aluminum U/D pullies
Centerforce DF clutch
Findanza Aluminum F/W

 

[Witzy0070]

Right on, thanks guys. However I think I will stick with the 1.6 rockers. But, what length and diameter pushrods do GT40 heads use? The roller rocker set I am buying, I don't think it includes new ones...

 

[LAFENATU]

You have to buy an adjustable pushrod checker. Measure them and then order.

 

[OnyxCobra]

i wouldnt recommend the steeda cam. I have it and have not been impressed with it... I second the trickflow stage 1...

I'd have to say the opposite lol. I think the #19 is a really nice cam.

 

[Witzy0070]

I just don't think it's aggressive enough for me. Want more exhaust.

 

[OnyxCobra]

it has more exhaust than the TFS1...

 

[Witzy0070]

Sorry, I was thinking of this http://www.summitracing.com/parts/TFS-51402002/

 

[OnyxCobra]

I'm no expert but I'm gonna say that cam is way too big for a GT40 heads and intake setup.

 

[Witzy0070]

It is, the valve lift it too high.

 

[two95s]

If your thinking about buying the iron gt40s save your money! They aren't much better than the e7s. As far as cams, look at Comps xe series.

 

[OnyxCobra]

yeah it has some lift but the duration is huge for heads that don't flow much. How much are you looking to spend on heads?

 

[Witzy0070]

900

 

[OnyxCobra]

you can do a HELL of a lot better than GT40 heads for $900.

 

[jthorn9]

+1 I paid $980 shipped for my X303 heads and they were rebuilt/cleaned so they were practically new.