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Which AFR heads do I need?

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Old Apr 18, 2009 | 05:13 PM
  #51  
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From: Buffalo, NY
Car: 1988 IROC-Z
Engine: 427 SBC
Transmission: ProBuilt 700R4
Axle/Gears: Moser 12 Bolt / 3.73 TrueTrac
Re: Which AFR heads do I need?

Cam (276HR10): http://www.compcams.com/Cam_Specs/Ca...?csid=188&sb=2

Rockers (1.6 Comp Pro Magnum): http://store.summitracing.com/partde...6&autoview=sku

Injectors (Ford 30lb): http://fuelinjectorconnection.com/sh...od&productId=5
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Old Apr 19, 2009 | 12:34 PM
  #52  
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Car: 1989 T-Top GTA
Engine: 5.7L TPI> 6.2L
Transmission: 700R-4
Axle/Gears: 3.27
Re: Which AFR heads do I need?

The installed height of those injectors gonna be alright???
I was told that I would need 32's as well.....
Wanted to try to tune first..... and go from there.
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Old Apr 19, 2009 | 03:37 PM
  #53  
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From: Buffalo, NY
Car: 1988 IROC-Z
Engine: 427 SBC
Transmission: ProBuilt 700R4
Axle/Gears: Moser 12 Bolt / 3.73 TrueTrac
Re: Which AFR heads do I need?

Originally Posted by GTA Sammy
The installed height of those injectors gonna be alright???
I was told that I would need 32's as well.....
Wanted to try to tune first..... and go from there.

Yea, they'll be fine. I searched and found quite a few people with HSR's running them.
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Old Jun 27, 2009 | 11:35 AM
  #54  
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Car: 1988 IROC-Z
Engine: 427 SBC
Transmission: ProBuilt 700R4
Axle/Gears: Moser 12 Bolt / 3.73 TrueTrac
Re: Which AFR heads do I need?

Thanks again guys. Just waiting on a water neck to come.



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Old Jun 27, 2009 | 11:55 PM
  #55  
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From: Buffalo, NY
Car: 1988 IROC-Z
Engine: 427 SBC
Transmission: ProBuilt 700R4
Axle/Gears: Moser 12 Bolt / 3.73 TrueTrac
Re: Which AFR heads do I need?

First start:
http://www.youtube.com/watch?v=wVk-C8jOEmQ

Warm idle:
http://www.youtube.com/watch?v=7BAocE35AhI

Drive away:
http://www.youtube.com/watch?v=EvSuL_VHwvw


For the stock tune, it runs WAY better than I thought. Obviously it runs too rich with the 30lb injectors. Idles good in park @750 rpm. But the idle speed in drive/reverse is too low. The car almost wants to stall. For a stock stall, and 2.77 gears, it is not slugish off the line. I was VERY surprised. Plenty of torque too and I'm running open headers.
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Old Jun 28, 2009 | 10:19 AM
  #56  
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Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: Which AFR heads do I need?

Abit more lopey than I thought but will be a strong running car thats for sure! MAF cars can take some mods and still work somewhat ok on stock tune. Glad to see its running tho. Congrats. Very nice combination there in a very nice car.
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Old Jun 28, 2009 | 03:34 PM
  #57  
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From: Buffalo, NY
Car: 1988 IROC-Z
Engine: 427 SBC
Transmission: ProBuilt 700R4
Axle/Gears: Moser 12 Bolt / 3.73 TrueTrac
Re: Which AFR heads do I need?

Originally Posted by Orr89RocZ
Abit more lopey than I thought but will be a strong running car thats for sure! MAF cars can take some mods and still work somewhat ok on stock tune. Glad to see its running tho. Congrats. Very nice combination there in a very nice car.
The idle videos are at 750 rpm. But in the drive away video, the idle is way too low, which makes it a lot more choppy. I will get that raised with my chip. And thank YOU for answering all my PM's. That and your HSR thread made my life a lot easier!

And a big thank you to everyone else in this thread too that helped me! (Air_Adam, GTA Sammy, 1989GTATransAm)


Orr, I see you put your AFPR in the same way I did. How the heck did you get to that screw to adjust it. Looks like it's going to be a challenge for me!

Last edited by IROCThe5.7L; Jun 28, 2009 at 03:49 PM.
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Old Mar 5, 2011 | 01:25 AM
  #58  
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From: Lawrence KS
Car: 91 z28
Engine: LS1
Transmission: 4L60e
Axle/Gears: 10 bolt 3.42
Re: Which AFR heads do I need?

Great thread!

Last edited by camarotucker; Mar 5, 2011 at 01:29 AM.
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