Stock LT1 valve sizes?
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Registered User
Joined: Jun 2001
Posts: 425
From: Lakeland, FL
Stock LT1 valve sizes?
Been running every search under the sun this morning and can't seem to find the specs on the stock valve sizes. Found lots about the 2.02/1.60s. Anyone have the info readily available for the stockers? Thanks
Registered User
Joined: Jun 2000
Posts: 857
From: Washington, Michigan USA
STOCK valve sizes are: 1.94" Intake and 1.50" Exhaust 
The next size up for our cars are 2.00" Intake and 1.56" Exhaust, (plus .060" oversize), which can be made to fit our STOCK valve seats by just re-cutting the seats. Usually running the 2.02" Intake and 1.60" Exhaust valves requires new seats 
Hope that helps?
The next size up for our cars are 2.00" Intake and 1.56" Exhaust, (plus .060" oversize), which can be made to fit our STOCK valve seats by just re-cutting the seats. Usually running the 2.02" Intake and 1.60" Exhaust valves requires new seats Hope that helps?
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