Casting numbers for 1970 LT1 heads?
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Joined: Feb 2007
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LT-1 Cylinder HEads ID
The correct part number from Chevy is 3927186 but are more commonly referred to as 186's.
On the LT-1 they used 2.020 intake valves, 1.600 exhaust valves, 7/16 x 3/8 screw in studs, 5/16 flat guide plates, and 1.250 single springs. They were available on other engines also but this is how the LT-1's were assembled.
Harry P. Hunter
On the LT-1 they used 2.020 intake valves, 1.600 exhaust valves, 7/16 x 3/8 screw in studs, 5/16 flat guide plates, and 1.250 single springs. They were available on other engines also but this is how the LT-1's were assembled.
Harry P. Hunter
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From: Millington Illinois
St. Jude Donor '08-'09
The correct part number from Chevy is 3927186 but are more commonly referred to as 186's.
On the LT-1 they used 2.020 intake valves, 1.600 exhaust valves, 7/16 x 3/8 screw in studs, 5/16 flat guide plates, and 1.250 single springs. They were available on other engines also but this is how the LT-1's were assembled.
Harry P. Hunter
On the LT-1 they used 2.020 intake valves, 1.600 exhaust valves, 7/16 x 3/8 screw in studs, 5/16 flat guide plates, and 1.250 single springs. They were available on other engines also but this is how the LT-1's were assembled.
Harry P. Hunter
