cam/rocker help please

U2SLO450

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May 27, 2006

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Mar 18, 2008

#1

• Mar 18, 2008

• #1

-Its finally getting warmer here so im going to do the h/c/i swap. The car is a 1990 gt. Im using gt40p heads with 1.94 valves, e-cam, and cobra intake. I plan on buying new rockers but i dont know which ones to get. I was looking at the crane energizer 1.7 rockers but im not sure if they will have clearance issues or not. Does anyone else have this setup? Can i reuse the stock rockers?

 

cenok is family

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Jun 25, 2003

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Mar 18, 2008

#2

• Mar 18, 2008

• #2

what pistons you got? i'm assuming they're stock, so as long as you dont have some pop up pistons you should be good to go with 1.7's. its always a good idea to check with some plastigauge though. they'll raise the lift on that e-cam from .498 to .529

 

U2SLO450

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Mar 18, 2008

#3

• Mar 18, 2008

• #3

well suppose that i order the 1.7s and they dont fit, then what would i have to do?

 

cenok is family

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Mar 18, 2008

#4

• Mar 18, 2008

• #4

what do you mean by not fit? unless you had your heads drilled for another size pedestal or converted them to stud mount, gt40p's are 5/16 pedestal mount heads so just make sure you get some that fit that. and if you do run into some PTV clearance issues with the 1.7's, i'm sure whoever you're ordering them from has some sort of return/exchange policy.

 

U2SLO450

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Mar 18, 2008

#5

• Mar 18, 2008

• #5

cenok is family said:

what do you mean by not fit? unless you had them drilled for another size pedestal or converted them to stud mount, gt40p's are 5/16 pedestal mount heads so just make sure you get some that fit that.

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No, i mean suppose the valves hit

 

cenok is family

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Norman, Ok

Mar 18, 2008

#6

• Mar 18, 2008

• #6

U2SLO450 said:

No, i mean suppose the valves hit

Click to expand...

i edited my post above, reread

other than exchanging, you could get your pistons fly cut to clearance the valves. any decent machine shop will be able to do this.

 

U2SLO450

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Mar 18, 2008

#7

• Mar 18, 2008

• #7

maybe i should just get the 1.6s

 

cenok is family

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Mar 18, 2008

#8

• Mar 18, 2008

• #8

haha don't let this scare you man. TONS of people run that exact setup you're wanting to run with no problems. i actually had that exact setup (gt40p's, crane/ford 1.7 roller rockers, Ecam) with an edelbrock performer RPM intake on an old coupe with no clearance issues as well. its a good setup that works well together. i'd go for it