Valves??????

jrh_1980 · March 12th, 2008, 01:04 PM

I have a set of 1965 289 heads that i am porting out and when i pulled the valves out they look great and i think they are oversized for the vintage.
Intakes are 1.94 and the exhaust are 1.60. the numbers stamped on the valves are as follows Intake, 7222 S3268, and exhaust is, 7373 A3283 do they mean anything and should they be replaced. any info would help. thanks

1slo5.0 · March 12th, 2008, 01:41 PM

I think you are wasting your time, effort and money unless the seats have been replaced with hardened seats. Old heads need lead to lubricate the exhaust valve seats. If they already have hardened seats then you will see a small improvement over E7 heads.

jrh_1980 · March 12th, 2008, 01:50 PM

how will i know if they have hardened seats

March 12th, 2008, 01:04 PM	#1
jrh_1980 Regular 89 Mustang LX 7.90@90mph 8th Join Date: Feb 2008 Location: Macomb, Illinois Posts: 151 iTrader: 1 reviews	Valves?????? I have a set of 1965 289 heads that i am porting out and when i pulled the valves out they look great and i think they are oversized for the vintage. Intakes are 1.94 and the exhaust are 1.60. the numbers stamped on the valves are as follows Intake, 7222 S3268, and exhaust is, 7373 A3283 do they mean anything and should they be replaced. any info would help. thanks

March 12th, 2008, 01:41 PM	#2
1slo5.0 MM Ninjas! 1990 Mustang LX 9.36@143 mph Join Date: Jan 2006 Location: North Fond du Lac, Wisconsin Posts: 11,375 iTrader: 1 reviews	I think you are wasting your time, effort and money unless the seats have been replaced with hardened seats. Old heads need lead to lubricate the exhaust valve seats. If they already have hardened seats then you will see a small improvement over E7 heads. __________________ My daily driver has 16 cylinders and 4400hp @ 1000 rpm.... ***1988 Mustang GT - Stock....almost

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March 12th, 2008, 01:50 PM	#3
jrh_1980 Regular 89 Mustang LX 7.90@90mph 8th Join Date: Feb 2008 Location: Macomb, Illinois Posts: 151 iTrader: 1 reviews	how will i know if they have hardened seats

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