Which size AFR Heads should I get?
Thread Starter
Drifting
Joined: Nov 2001
Posts: 1,783
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From: Latham NY
Which size AFR Heads should I get?
I am leaning toward AFR 190cc heads to replace my iron heads. They come with two combustion chamber sizes: 68 and 74. I believe I have 76cc now. Getting the 68cc with increase my compression ratio to about 9.7 from 9.0 now. Questions:
1. 68cc or 74cc
2. What's different with their L98 heads compared to straight heads?
3. Where to buy?
[Modified by Bluevette85, 1:03 PM 9/1/2002]
1. 68cc or 74cc
2. What's different with their L98 heads compared to straight heads?
3. Where to buy?
[Modified by Bluevette85, 1:03 PM 9/1/2002]
Safety Car
Joined: Mar 2000
Posts: 3,620
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From: Hillsboro OR
Re: Which size AFR Heads should I get? (Bluevette85)
Get the 180 cc heads. The flow differences between the 180 and 190 are not much. The smaller intake runner will give better throttle response.
Pro
Joined: Jul 2000
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From: Vancouver WA
Re: Which size AFR Heads should I get? (AquaMetallic94LT1)
I'm using the 190's 68cc and custom chambered by AFR for 58cc which is the stock size for 87 heads. Not sure about the size for your 85 (I thought it might be 58cc but not sure). But I'm satisfied with these heads :yesnod:
Melting Slicks
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From: PITTSBURGH PA
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Re: Which size AFR Heads should I get? (Bluevette85)
try to get a true 10.5 comp with the heads they might not help you much unless you attack the rest of the intake system
Thread Starter
Drifting
Joined: Nov 2001
Posts: 1,783
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From: Latham NY
Re: Which size AFR Heads should I get? (CORKVETTE1)
try to get a true 10.5 comp with the heads they might not help you much unless you attack the rest of the intake system
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From: Athens AL
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Re: Which size AFR Heads should I get? (Bluevette85)
190s with the 68cc chamber, just keep the compression below 11 and youll be fine
L98s have a specific angle to the plug, this is what youll want for proper header fitment anyway.
I would buy them directly from AFR. airflowresearch.com
L98s have a specific angle to the plug, this is what youll want for proper header fitment anyway.
I would buy them directly from AFR. airflowresearch.com
