Hardened exhaust seat question?
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Joined: Jul 1999
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From: Marshall,IL
Car: 82 & 91 Firebird
Engine: 400 & 355
Transmission: TH350 & 700
Axle/Gears: 4:11 & 2.72
Hardened exhaust seat question?
I have a set of 3973487 heads. Originally it had 1.94/1.50 valves, I had 2.02/1.60 put in. Here's my question? Did these heads come with hardened exhaust seats, And if so, after the new valve job will it still be hardened?
Thanks
Spud
Thanks
Spud
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: Hardened exhaust seat question?
Those were the first SBC heads that came with hardened seats.
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