big valves or small chambers?
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From: Morristown, NJ
big valves or small chambers?
I am going to buy a 350, and the seller has two different pairs of heads available. He has iron L98 heads, or 881 castings. I looked at mortec.com, and found that the 881s have 76cc chambers and 2.02/1.6 valves. The L98s have 58cc chambers, i THINK. Which are superior? I like compression, and i think that because this is a truck block it will have dished pistons. Is the extra flow generated by big valves worth the hit in compression? Thank you.
Matt
Matt
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From: Ailsa Craig, Ontario, Canada
Car: 84 Trans Am
Engine: 350
Transmission: 700r4
dished pistons and 76cc chambered heads will kill your compression.....i would go for the L98 heads, especially with dished pistons
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Originally posted by darbleinad
dished pistons and 76cc chambered heads will kill your compression.....i would go for the L98 heads, especially with dished pistons
dished pistons and 76cc chambered heads will kill your compression.....i would go for the L98 heads, especially with dished pistons
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From: Calgary, Alberta, Republic of Western Canada
Car: 1986 Sport Coupé
Engine: 305-4v
Transmission: 700R4 and TransGo2
Re: big valves or small chambers?
Originally posted by black83z
I am going to buy a 350, and the seller has two different pairs of heads available. He has iron L98 heads, or 881 castings. I looked at mortec.com, and found that the 881s have 76cc chambers and 2.02/1.6 valves. The L98s have 58cc chambers, i THINK. Which are superior? I like compression, and i think that because this is a truck block it will have dished pistons. Is the extra flow generated by big valves worth the hit in compression? Thank you.
Matt
I am going to buy a 350, and the seller has two different pairs of heads available. He has iron L98 heads, or 881 castings. I looked at mortec.com, and found that the 881s have 76cc chambers and 2.02/1.6 valves. The L98s have 58cc chambers, i THINK. Which are superior? I like compression, and i think that because this is a truck block it will have dished pistons. Is the extra flow generated by big valves worth the hit in compression? Thank you.
Matt
There's excellent hp to be had from them and 1.94 intake valves are plenty for almost any street driven smallblock
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