head flow numbers?
Registered User
Joined: Jun 2001
Posts: 1,209
From: TX
Re: head flow numbers?
Chevy high performance has a head flowdatabase and I think they have some L98 aluminum heads listed. Look under tech articles.
http://www.chevyhiperformance.com/
http://www.chevyhiperformance.com/
Thread Starter
Registered User
Joined: Nov 2000
Posts: 3,978
From: MI
Re: head flow numbers?
well then show me where i can find numbers for their heads...ported or otherwise.
CHP seems like they were all very general in numbers on the intake/exhaust side using .6 as a bench.
hmm..
CHP seems like they were all very general in numbers on the intake/exhaust side using .6 as a bench.
hmm..
Last edited by kandied91z; Dec 15, 2004 at 02:03 AM.
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Joined: Dec 1969
Posts: 1,147
From: Phila., PA
Re: head flow numbers?
CHP numbers are VERY specific with data from .050 up to .600 and everything in between, plus information on their flow testing regimen including exhaust flow both with and without a header tube.
They tested the ALUMINUM L-98 heads (like used on the Vette) but not the cast iron L-98 heads (used on F-body cars). They're different animals. But neither is anything to write home about, flow-wise.
I don't beleive they tested the Fastburn heads, but they did test several different AFR heads.
They tested the ALUMINUM L-98 heads (like used on the Vette) but not the cast iron L-98 heads (used on F-body cars). They're different animals. But neither is anything to write home about, flow-wise.
I don't beleive they tested the Fastburn heads, but they did test several different AFR heads.
Last edited by Damon; Dec 15, 2004 at 07:23 AM.
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Joined: Sep 2003
Posts: 72
From: Yerington, NV
Re: head flow numbers?
__________________Intake_________________________E xhaust
Lift______.100 .200 .300 .400 .500 .600______.100 .200 .300 .400 .500 .600
CFM_______44 101 155 182 196 202_______41 82 125 137 140 141
These are the numbers for stock 083 L98 heads straight from TPIS.
Lift______.100 .200 .300 .400 .500 .600______.100 .200 .300 .400 .500 .600
CFM_______44 101 155 182 196 202_______41 82 125 137 140 141
These are the numbers for stock 083 L98 heads straight from TPIS.
Last edited by f-bodybuilder; Dec 15, 2004 at 12:18 PM.
Registered User
Joined: Aug 1999
Posts: 454
From: Bloomington, MN
Re: head flow numbers?
Originally Posted by f-bodybuilder
__________________Intake_________________________E xhaust
Lift______.100 .200 .300 .400 .500 .600______.100 .200 .300 .400 .500 .600
CFM_______44 101 155 182 196 202_______41 82 125 137 140 141
These are the numbers for stock 083 L98 heads straight from TPIS.
Lift______.100 .200 .300 .400 .500 .600______.100 .200 .300 .400 .500 .600
CFM_______44 101 155 182 196 202_______41 82 125 137 140 141
These are the numbers for stock 083 L98 heads straight from TPIS.
But those numbers do look pretty accurate. Can't fault TPIS when testing stock products, can 'ya? I'm sure Jeff can/will find a way.
Eric
Registered User
Joined: Sep 1999
Posts: 2,342
From: MI
Re: head flow numbers?
http://chevyhiperformance.com/techarticles/41598/ Scroll down to the "sidebar" articles. Huge information right there on probably 30 different SBC heads.
I've never seen Fastburn numbers other than GM's BS claims and I've spent way too much time looking.
AFR has their own numbers on their website.
I've never seen Fastburn numbers other than GM's BS claims and I've spent way too much time looking.
AFR has their own numbers on their website.
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