Help with FRPP heads/Roller Rockers

9

92-5.0

New Member

May 4, 2007

3

0

0

California

May 4, 2007

#1

• May 4, 2007

• #1

I am sticking with FRPP for my combo and need help choosing the right heads and roller rockers, while trying to stay at or near the stock compression ratio. I am going to purchase the GT40X heads but don't know if I should get the 58cc or 64cc heads? Also, should I match them to the 1.6 or cobra 1.72 rollers?

 

9

92-5.0

New Member

May 4, 2007

3

0

0

California

May 6, 2007

#2

• May 6, 2007

• #2

anyone?

 

jtfairlane

New Member

Mar 5, 2006

468

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0

May 6, 2007

#3

• May 6, 2007

• #3

The 64cc heads will keep you closer to your stock compression ratio than the 58cc heads, the 58cc heads will give you a slight increase in compression. If you go with the Cobra 1.7 rockers, you should be just fine with Piston to Valve clearance, but I would clay the pistons and check for sure.

 

9

92-5.0

New Member

May 4, 2007

3

0

0

California

May 7, 2007

#4

• May 7, 2007

• #4

Thanks. I'll just go with the 1.6 rr.

 

wythors

Get off my lawn!!!

Founding Member

May 17, 2000

2,277

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69

C Addle

May 7, 2007

#5

• May 7, 2007

• #5

Check my mod list below. I went with the GT-40X303 heads for the reason listed above. The FRPP tech line recommended the 1.6 rockers for those heads with the E-cam on stock pistons. This set-up gave me 257 rwhp through the stock AOD. I'm currently collecting parts to do a T-5 swap and I'm expecting to be closer to 290 at the rear wheels when I'm done with that.

 

85_SS_302_Coupe

it sucks (I know) to be on the receiving end

15 Year Member

Nov 11, 2003

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Northern KY

May 7, 2007

#6

• May 7, 2007

• #6

I'd opt for the 58cc heads for an NA setup...extra compression helps.