C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

TPIS/AFR Flow Numbers?

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Old Nov 15, 2004 | 07:48 PM
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Default TPIS/AFR Flow Numbers?

Dose any know what the flow numbers flor the CNC TPIS/AFR
heads are
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Old Nov 15, 2004 | 07:53 PM
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AFR-(818)890-0616 ; TPIS (952)-448-6021 See if they can fax you actual flow sheets-curious to see the difference in lower/mid-lift #'s
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Old Nov 15, 2004 | 07:55 PM
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Default TPIS/AFR Heads

The only flow numbers that I could find in their book was, 258 cfm @.500.
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Old Nov 15, 2004 | 08:03 PM
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Try AFR's website...
..............out of box cfm......CNC'd cfm
185cc head at .55 255cfm 265cfm CNC
195cc head at .55 262cfm 280cfm CNC
210cc head at .55 277cfm 282cfm CNC

Last edited by chriswtx; Nov 15, 2004 at 08:09 PM.
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Old Nov 16, 2004 | 12:27 AM
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MY AFR 195's CNC version.

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Old Nov 16, 2004 | 07:09 AM
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Lift .100 .200 .300 .400 .500 .600
CFM 66 138 204 247 272 275

The TPIS/AFR version of 100% CNC'd exhaust AND intake. These are extremely close to AFR's competition ported heads.

See http://tpis.com/ - click on engine development.

Last edited by Red Tornado; Nov 16, 2004 at 07:12 AM.
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Old Nov 16, 2004 | 07:28 AM
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Originally Posted by Corvette0096
MY AFR 195's CNC version.

u are putting alot of CFM threw those suckers? what all was done to them?
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Old Nov 16, 2004 | 09:28 AM
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They are the comp series is all.
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Old Nov 16, 2004 | 10:50 AM
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Originally Posted by Corvette0096
They are the comp series is all.
did you cc the intake runner?
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Old Nov 16, 2004 | 10:54 AM
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The intake runners are 195..
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Old Nov 16, 2004 | 11:06 AM
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Originally Posted by Corvette0096
The intake runners are 195..
Just a clarification, was it measured?

I only ask because I thought that was 195cc, as cast, and competition porting would open them up more. I seem to remember a someone cc'd their intake runners on ported AFR's and it was about 5%-7% larger volume.

thanks!
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Old Nov 16, 2004 | 11:24 AM
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Originally Posted by Raistlin
Just a clarification, was it measured?

I only ask because I thought that was 195cc, as cast, and competition porting would open them up more. I seem to remember a someone cc'd their intake runners on ported AFR's and it was about 5%-7% larger volume.

thanks!

Nope. I had no idea on that. I guess the guys at AFR would be able to answer that one.
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Old Nov 16, 2004 | 12:28 PM
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I own a set, and when I bought them the tech on the phone told me they flowed 260 ish. Obviosly he didn't really know what they flow, but I do know that I made 360 rwhp&trq with them, a set of longtubes and a hotcam kit.- no tuning.
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Old Nov 16, 2004 | 12:54 PM
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Originally Posted by Baldturbofreak
I own a set, and when I bought them the tech on the phone told me they flowed 260 ish. Obviosly he didn't really know what they flow, but I do know that I made 360 rwhp&trq with them, a set of longtubes and a hotcam kit.- no tuning.
I have a set of the comp heads too. They made 367rwhp with hot cam and miniram with an auto.
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Old Nov 16, 2004 | 12:55 PM
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Originally Posted by Raistlin
Just a clarification, was it measured?

I only ask because I thought that was 195cc, as cast, and competition porting would open them up more. I seem to remember a someone cc'd their intake runners on ported AFR's and it was about 5%-7% larger volume.

thanks!
That's a good point!! Never thought about that.
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Old Nov 16, 2004 | 01:42 PM
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AFR told me that their competition package cnc porting adds 5cc's to the port volume on all their heads
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Old Nov 16, 2004 | 06:01 PM
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Originally Posted by tpi 421 vette
AFR told me that their competition package cnc porting adds 5cc's to the port volume on all their heads
thanks!
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Old Nov 16, 2004 | 08:10 PM
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here are my 180 Protoplines if this helps at all

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Old Nov 16, 2004 | 08:12 PM
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Here are my protoplines if this helps.

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Old Nov 17, 2004 | 11:25 AM
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Are these 200's and without any porting? I have a set for my car as well with 2.08's, some porting of the intakes and modified CNC'd combustion chambers. I did not have them flowed after porting.

Thanks
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