How much power am I giving up. 1205vs1206 HSR
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From: meridian, idaho
Car: 92 1500p\u 2wd
Engine: 91 z28 tpi 355
Transmission: 91 700r4
How much power am I giving up. 1205vs1206 HSR
So I'm running the AFR 195cc 1095 comp ported heads that match the 1206 intake gasket and my HSR is the older 1205 intake that would need welding to get 1206. Should I sell the HSR and get a newer portable 1206 one to match the heads or just lightly port my HSR and run the 1205s? How much power am I leaving on the table. 355 camp cams custom grind 224-230 .570s lift 112. I don't want to spin this short block past 6k often with the stock crank.
Thread Starter
Senior Member
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From: meridian, idaho
Car: 92 1500p\u 2wd
Engine: 91 z28 tpi 355
Transmission: 91 700r4
Re: How much power am I giving up. 1205vs1206 HSR
Also I see the 1206 don't match the 1095 comp AFR heads perfect. I cut a very small amount of the 1205 gasket and it matches pretty good.....as long as I have all the blue silicone left on the gasket do you think it will seal alright?
Joined: Sep 2003
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From: Pittsburgh PA
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: How much power am I giving up. 1205vs1206 HSR
It will seal fine. Afr ports are somewhat off standard 120x dimension gaskets
With your cam size and cubes i dont see a need for a 1206 intake port. It should do well as is
With your cam size and cubes i dont see a need for a 1206 intake port. It should do well as is
Thread Starter
Senior Member
iTrader: (5)
Joined: Feb 2005
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From: meridian, idaho
Car: 92 1500p\u 2wd
Engine: 91 z28 tpi 355
Transmission: 91 700r4
Re: How much power am I giving up. 1205vs1206 HSR
Perfect just want I was hoping to hear. Thanks
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