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6x 4 heads
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dmcgilli
New User
| Posts: 1
| Joined: 01/12
Posted: 01/27/12
04:34 PM
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Just dropped off old set of 6X 4 heads to be redone. Do I need to have the valve seats replaced to harden ones? And what kind of porting should I have done? They are going on a 455 +.040 4 speed '66 GTO with headers. Engine is getting rebuilt with a roller hyd.
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Posted: 01/27/12
05:10 PM
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No the 6X heads should have harden seats already.
Horsepower sells engines and torque wins races
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CarlosCJ3B
Enthusiast
| Posts: 297
| Joined: 10/11
Posted: 01/28/12
06:35 AM
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Make sure someone competant is porting as too much porting is bad
Carlos
70 Lemans(GTO Clone),406,Solid Cam 218 single pattern, 105 LSA
Serious Hobbyist
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