L98 Aluminum Head Characteristics
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Supreme Member
Joined: Jan 2001
Posts: 1,116
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From: Rio Rico, AZ 85648
Car: 1989 IROC-1
Engine: L98
Transmission: 700r4
L98 Aluminum Head Characteristics
L98 aluminum heads flow characteristics.
Any bench test results out there?
Flow characteristics compared to some of the aftermarket heads?
Intake runner size?
I know these are a popular choice for a lot of people, but am curious about some of the numbers.
Anybody know?
------------------
http://www.gruveb.com/z28
Any bench test results out there?
Flow characteristics compared to some of the aftermarket heads?
Intake runner size?
I know these are a popular choice for a lot of people, but am curious about some of the numbers.
Anybody know?
------------------
http://www.gruveb.com/z28
Supreme Member
Joined: Jul 1999
Posts: 1,431
Likes: 1
From: Huntsville, AL
Car: '00 Chevrolet Corvette
Engine: LS1
Transmission: 4L60E
Axle/Gears: 2.73
check out my website. I've got flow tables for stock Aluminum L98 heads and after SDPC puts a pocket port job on 'em.
-Mark W.
'88 SC Camaro w/ 305 TBI
-Mark W.
'88 SC Camaro w/ 305 TBI
Supreme Member
Joined: Sep 2001
Posts: 6,111
Likes: 53
From: Ontario, Canada
Car: 1988 Firebird S/E
Engine: 406Ci Vortec SBC
Transmission: TH-350/3500stall
Axle/Gears: 7.5" Auburn 4.10 Posi-Traction
The L98 heads have a superior exhaust port shape as cast. The real beauti of these heads
only is seen when they are reworked.
Install 2.00"/1.55" LT4 style valves and give them a good porting. Don't be shy here.
Once properly modified they are the basis
of a serious small block build up.
only is seen when they are reworked.
Install 2.00"/1.55" LT4 style valves and give them a good porting. Don't be shy here.
Once properly modified they are the basis
of a serious small block build up.
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