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Are my AFR heads too big for my combo?

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Old Jan 20, 2008 | 06:25 PM
  #1  
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From: Michigan
Are my AFR heads too big for my combo?

My current setup is:

355ci
Comp Cam, 230/236 duration @ .050", .510/.520 lift
AFR 195 cc heads
Performer RPM intake
Demon 750 carb
1.6 roller rockers
10:1 compression ratio

Do you think my 195cc heads are too big? I haven't really found a similar combo with those heads/cam. Thanks.
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Old Jan 20, 2008 | 06:27 PM
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//<86TA>\\'s Avatar
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Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: Are my AFR heads too big for my combo?

i dont think they are
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Old Jan 20, 2008 | 06:30 PM
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From: Warsaw, Indiana
Car: 1991 Firebird
Engine: 427 LSX
Transmission: Turbo 400
Re: Are my AFR heads too big for my combo?

They are fine. Tons of people have 355s and 195s. Good combo.
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Old Jan 20, 2008 | 06:33 PM
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Car: 87 TA clone
Engine: 70/70 Turbo 5.3 LS
Transmission: bullet proof 2004R
Axle/Gears: ford 8.8, 3.55 gears
Re: Are my AFR heads too big for my combo?

that lil SHlT is gona revvvvv! u better be ready for 6000-7000 rpm peak power wit that cam too
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Old Jan 20, 2008 | 06:49 PM
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Re: Are my AFR heads too big for my combo?

Below 2500 she'll be a little soggy, but so will your cam. It's a reasonably well matched combo from the specs you posted. From 3000-up it's gonna rip.

If you're running an automatic I assume you will choose a converter with a stall speed to match the rest of the combo (2500 minimum, 3000 preferred).
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Old Jan 20, 2008 | 06:50 PM
  #6  
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From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
Re: Are my AFR heads too big for my combo?

I'm sure it'll be fine. On bigger cams we've put 210s on 355 with no issues.
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Old Jan 20, 2008 | 10:25 PM
  #7  
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From: Glenbeulah, WI
Car: 1988 Firbird
Engine: 406
Transmission: T-56
Axle/Gears: 4.10
Re: Are my AFR heads too big for my combo?

The heads are not too big, it will work fine.
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Old Jan 21, 2008 | 12:16 PM
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From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
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Re: Are my AFR heads too big for my combo?

Ditto's.
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Old Jan 21, 2008 | 01:19 PM
  #9  
CamaroX84's Avatar
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Re: Are my AFR heads too big for my combo?

Originally Posted by Damon
Below 2500 she'll be a little soggy, but so will your cam. It's a reasonably well matched combo from the specs you posted. From 3000-up it's gonna rip.

If you're running an automatic I assume you will choose a converter with a stall speed to match the rest of the combo (2500 minimum, 3000 preferred).
Thanks for the replies. I've got a 3200 stall Edge converter.
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Old Jan 21, 2008 | 05:57 PM
  #10  
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From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
Re: Are my AFR heads too big for my combo?

Pretty similar to my combo... 357ci, 200cc World heads, XE274 cam (230/236 flat tappet), 10:1 CR, 750 Holley DP, MSD ignition. Haven't tried it yet at the track, but it does run and drive pretty nice.
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Old Jan 21, 2008 | 06:22 PM
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Re: Are my AFR heads too big for my combo?

Let me know when you run it Adam. I'll be running mine (finally) this summer. I'm hoping to run a 12.40 or so.
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Old Jan 21, 2008 | 09:38 PM
  #12  
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From: Aiken, SC
Car: 91 Z/28, 89 RS Race Car
Engine: 305 stock / ZZ4 AFR 195 9.7:1
Transmission: T5 / t10 / Jerico
Axle/Gears: 10blt w 3.42, 9 in w /3.80 DL
Re: Are my AFR heads too big for my combo?

That engine should be great!
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Old Jan 21, 2008 | 11:25 PM
  #13  
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Car: '82 Z28
Engine: 350
Transmission: TH400 4,000 stall
Axle/Gears: Currie 9", 4.56 gears
Re: Are my AFR heads too big for my combo?

Running AFR 195's on mine, runs great.
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Old Jan 22, 2008 | 08:47 PM
  #14  
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From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
Re: Are my AFR heads too big for my combo?

Originally Posted by CamaroX84
Let me know when you run it Adam. I'll be running mine (finally) this summer. I'm hoping to run a 12.40 or so.
I don't know what it will run, because I don't know if I'll be changing the gears in it or not this year (2.73s now) or if I'll just wait and put in a 12 bolt later.

I also need the driver mod, lol
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Old Jan 23, 2008 | 02:39 PM
  #15  
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From: Huntley, Il
Car: 89 ws6
Engine: 355 afr195, hsr,gmpp cam, hs rr,
Transmission: t-5
Axle/Gears: 3.08
Re: Are my AFR heads too big for my combo?

Great setup for your combo, the compression will help keep it from being too soggy down low with all that duration but i agree that around 2500-3000 the cam should come on very hard. I have a cam with 235 duration and much less compression and right at 3000 it just screams.
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Old Jan 23, 2008 | 02:54 PM
  #16  
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Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: Are my AFR heads too big for my combo?

i'll be using those AFR 195 heads on my 383 build and a larger roller cam than that 230/236. Those 195cc AFR's really fit the bill for hot 350's and most all 383 builds as well as mild to street/strip 400's.
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Old Jan 23, 2008 | 08:16 PM
  #17  
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Car: 92 Camaro
Engine: Dart SHP 406 HSR, LE heads
Transmission: Performabuilt Level 2, Vig 3200
Axle/Gears: S60 373
Re: Are my AFR heads too big for my combo?

When I was a 355....I ran the same cam I have in my 383 the 276hr 224/230 with AFR 195 heads and no problems...I had issues with other things like road bearings....which led to the 385 i currently have with the same cam
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Old Jan 25, 2008 | 06:32 PM
  #18  
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From: Orange County,NY
Car: 1982 Z28
Engine: 355
Transmission: T56
Axle/Gears: 12 Bolt
Re: Are my AFR heads too big for my combo?

Damn near the same combo I have been running for the last 7 years or so. Runs great, and yes..she will scream up top. Just sold my heads to step up to the new 195 Eliminators.
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Old Jan 28, 2008 | 02:37 PM
  #19  
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From: Webster, MA
Car: 1982 Camaro Z28
Engine: Self-built 350
Transmission: Pro-Built 700r4 w/2800 Vigilante
Axle/Gears: Eaton 3.73 w/Moser axles
Re: Are my AFR heads too big for my combo?

Originally Posted by CamaroX84
My current setup is:

355ci
Comp Cam, 230/236 duration @ .050", .510/.520 lift
AFR 195 cc heads
Performer RPM intake
Demon 750 carb
1.6 roller rockers
10:1 compression ratio

Do you think my 195cc heads are too big? I haven't really found a similar combo with those heads/cam. Thanks.
I'm going to be running a very similar combination with the motor that I'm currently building. I talked to someone at AFR about a week ago and they recommended the 195 Eliminators based on the specs I gave (Like I said, very close to yours. Same trans, rear end ratio, and I also plan on using a COMP XR282). They told me to step up to 1.6 rockers, but you already have that on your list.
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Old Jan 28, 2008 | 02:59 PM
  #20  
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From: 4-22 / 7-25
Car: '91 Z28 L98 G92
Engine: Modded L98
Transmission: Modded 700R4
Axle/Gears: Modded 10-Bolt
Re: Are my AFR heads too big for my combo?

I am running the AFR Eliminator 195s (62 cc chambers) on a stock displacement 350 short-block. Check my sig for other mods; there is no lack of power anywhere (that a modded TPI can support) in the RPM range.
Bill
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