MTI/AFR Stage 2 flow comparison
06-07-2005, 01:40 PM
#1
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MTI/AFR Stage 2 flow comparison Since I have a set of both I decided to get flow numbers on both to compare:
MTI Stage 2 heads
.100 - 65/55
.200 - 131/98
.300 - 189/141
.400 - 231/175
.500 - 265/199
.550 - 276/211
.600 - 277/218
.650 - 277/222
.700 - 277/224
AFR 205 Stage 2
.100 - 61/50
.200 - 133/108
.300 - 198/158
.400 - 236/204
.500 - 276/221
.550 - 287/227
.600 - 294/232
.650 - 296/235
.700 - 298/235
MTI Stage 2 heads
.100 - 65/55
.200 - 131/98
.300 - 189/141
.400 - 231/175
.500 - 265/199
.550 - 276/211
.600 - 277/218
.650 - 277/222
.700 - 277/224
AFR 205 Stage 2
.100 - 61/50
.200 - 133/108
.300 - 198/158
.400 - 236/204
.500 - 276/221
.550 - 287/227
.600 - 294/232
.650 - 296/235
.700 - 298/235
06-07-2005, 02:25 PM
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Originally Posted by JZ'sTA
Was a pipe used?
Clay radius?
3.0 bore?
What kind of bench?
Weird how the MTI heads flow 277 from 600-700
Clay radius?
3.0 bore?
What kind of bench?
Weird how the MTI heads flow 277 from 600-700
Originally Posted by CHRISPY
I'd like to know the intake and exhaust volumes in cc's on the MTI head.
Last edited by Anniversary "Z"; 06-07-2005 at 03:05 PM.
06-07-2005, 02:30 PM
#6
Im on the market for heads. That info helped a great deal
My TR224 only has a lift of .564 so any numbers above that dont mean jack to me. There arent to many cams out there with the lift of .600.
Even though Id lose about 10 CFM looking at both heads at .550, im ok with that and the $1000.00 dollar savings.
That is if both heads have the same everything
That's the kind of info that should be on these forums !!
My TR224 only has a lift of .564 so any numbers above that dont mean jack to me. There arent to many cams out there with the lift of .600.
Even though Id lose about 10 CFM looking at both heads at .550, im ok with that and the $1000.00 dollar savings.
That is if both heads have the same everything
That's the kind of info that should be on these forums !!
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06-07-2005, 02:51 PM
#8
Originally Posted by Phil'sC5vette
Even though Id lose about 10 CFM looking at both heads at .550, im ok with that and the $1000.00 dollar savings.
__________________
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
06-07-2005, 03:04 PM
#9
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Sorry I posted it above, but accidentally tied it into a quote. They are the 2R heads.
Phil the MTIs are going to be for sale if you are in need and interested or anyone else for that matter.
Phil the MTIs are going to be for sale if you are in need and interested or anyone else for that matter.
06-07-2005, 03:40 PM
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I bought these from a board member so as far as flow sheets that originally came with the heads I do not have them although the advertised flow numbers are pretty accurate until about 550 and then the flow numbers take a hike as opposed to what my flow sheets shows. Neither head was able to top 300. This is supposedly a fairly new set of heads. I was told the MTIs were new but they do show signs of having gaskets on at one time. The AFRs are new.
06-07-2005, 03:42 PM
#13
Originally Posted by Anniversary "Z"
Sorry I posted it above, but accidentally tied it into a quote. They are the 2R heads.
Phil the MTIs are going to be for sale if you are in need and interested or anyone else for that matter.
Phil the MTIs are going to be for sale if you are in need and interested or anyone else for that matter.
Sent you a pm on the MTI heads
06-07-2005, 06:48 PM
#15
Originally Posted by Patrick G
First off, you can't buy the MTI heads for $1,182 (that would be $1,000 less than the AFRs) and second, look at the flow difference on the exhaust. The AFRs are 20-30 numbers better at the lifts your cam would be running. The intake is a solid 10 numbers better at most usable lifts...all with a smaller, higher velocity port.
Find me a dealer that doesnt charge you extra to have your AFR heads down to 11:1 compression, and Ill buy them. AFR come stock at 66cc, then you have to mill them to get 60cc which is about the 11:1 compression im looking for. Did you have your heads milled, or are you at the factory 66cc? that's the price savings im talking about
The MTIs are about $ 1500.00
06-07-2005, 08:18 PM
#18
Originally Posted by jrp
what castings are they?
I pm him about the he said they where 241 but he had to check to make sure.
The MTI Stage 2R heads retails for $2,795 plus core.
http://www.motorsporttech.com/fbody_engine01.asp
He stated above that the heads where MTI Stage 2R
