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AFPR setting on LB9

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Old Apr 15, 2003 | 01:49 PM
  #1  
SLP IROC-Z's Avatar
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From: Salem, NH
Car: 1999 Z28
Engine: LS1
Transmission: 4L60E
Axle/Gears: 3.23 10 Bolt
AFPR setting on LB9

u guys with LB9s peanut cam or L98 cam what do u guys run ur AFPRs at and what did u get for a power increase at the track and SOTP?? i was thinkin about getting one but i dont know if its worth it.
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Old Apr 16, 2003 | 12:19 PM
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From: Nashville TN
Car: 1989 Trans Am
Engine: 355 HSR
Transmission: Pro-Built 700r4 w/ 3400 converter
Axle/Gears: 10 bolt w/ 3.42 gears
it can vary from car to car... some like more than others... when i adjusted mine from stock to 49 psi the SOTP feel was there definatley... play w/ it at the track and see what happens...
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Old Apr 16, 2003 | 02:15 PM
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bigals87z28's Avatar
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From: Ocean, NJ
Car: Check The Sig
slp and chris.. what kind of afpr did you guys get? and are you happy with them? any problems? I heard that 305's respond to afprs better then 350's? I might need one after i do all the mods i have planned... i dont know.. i also need an aldl scanner
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Old Apr 16, 2003 | 02:16 PM
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From: Nashville TN
Car: 1989 Trans Am
Engine: 355 HSR
Transmission: Pro-Built 700r4 w/ 3400 converter
Axle/Gears: 10 bolt w/ 3.42 gears
to be perfectly honest... i don' t know what mine is... i got it used from a buddy of mine... he just gave it to me when he swapped to a miniram setup...
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Old Apr 17, 2003 | 12:26 PM
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From: West cenral florida
Car: 1990 Firebird Formula 305
Engine: 305tpi w/145,000 on the clock
Transmission: 700r4
I installed a Crane AFPR about a month ago. I would definately recommend it for anyone with a 305 tpi. The SOTP of course was there however, taking it to the track and doing a little "test and tuning" is the best way to find an optimum setting. Mine landed at 49psi as well.

I think the Crane model is great. It is easy to adjust w/an 8mm wrench so you don't have to take off the plenum to play w/it. Without a doubt a good buy.
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