Are these heads better than stock LO3?
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Joined: Jul 2004
Posts: 121
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From: Rumson, NJ
Car: 1991 Pontiac T/A Vert
Engine: 350 TPI
Transmission: 700R4
Are these heads better than stock LO3?
I have a set of 305 heads off of a chev. caprice I think it was. I just measured the valve sizes and they measure 1.84 and 1.51. One plus is that they are NOT swirl heads. What are the stock valve sizes?
Thanks, Mike.
Thanks, Mike.
Joined: Mar 2000
Posts: 43,187
Likes: 43
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
1.84/1.50".
What are the casting #'s of the Caprice heads?
What are the casting #'s of the Caprice heads?
Joined: Mar 2000
Posts: 43,187
Likes: 43
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
I won't as long as you don't expect useful information... 
Joined: Mar 2000
Posts: 43,187
Likes: 43
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Should be under the valve covers. Can you not make them out because there's so much crud built up that the numbers are hidden?
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