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Bulletproof head gaskets for 12.5 small block #479207
09/25/09 01:39 PM
09/25/09 01:39 PM
Joined: Jan 2003
Posts: 9,982
Ansonia, CT
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CJK440 Offline OP
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CJK440  Offline OP
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Joined: Jan 2003
Posts: 9,982
Ansonia, CT
I'm building about a 12.5:1 340 stroker and don't want to push out headgaskets.

I know people will recomend cometics but after my last experience I won't use them again, at least not on an LA motor.

I did end up using SCE Titan ICS coppers which worked well and will have no problem dealing with the compression but they are $$

Any composites up to the task??


2017 Contusion Blue Challenger T/A 392 M6 "BLKNBLU"
Re: Bulletproof head gaskets for 12.5 small block [Re: CJK440] #479208
09/25/09 05:13 PM
09/25/09 05:13 PM
Joined: Nov 2005
Posts: 589
Fortworth TX
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mod5v Offline
mopar
mod5v  Offline
mopar
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Joined: Nov 2005
Posts: 589
Fortworth TX
Bullet proof? not sure there is such a thing but I've used the felpro 1008 on a 13-1 with no problems to 7200rpms.

Re: Bulletproof head gaskets for 12.5 small block [Re: mod5v] #479209
09/25/09 05:23 PM
09/25/09 05:23 PM
Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
Leon441 Offline
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Leon441  Offline
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Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
I run cometics on everthing. Especially small block mopars. Grant it you can't square the surfaces with a belt sander and expect them not to leak. LOL

Leon


Career best 8.02 @ 169 at 3050# and 10" tires small block power.
Re: Bulletproof head gaskets for 12.5 small block [Re: Leon441] #479210
09/25/09 05:34 PM
09/25/09 05:34 PM
Joined: Jan 2003
Posts: 11,786
Portage,michigan
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B3422W5 Online content
I Live Here
B3422W5  Online Content
I Live Here
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Joined: Jan 2003
Posts: 11,786
Portage,michigan
Cometics here for 7 years at 13.3 compression zero head gasket failures.I am flat out sold on them

I have had many failures at less compression with 1008 fel pro's.

if the surfaces are prepped correctly, i wouldnt run anything but cometics on a 10 bolt head.


69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam, footbrake street/strip car
Best so far, 10.32 1/4
1.41 best 60 foot
6.56 at 104.17



Re: Bulletproof head gaskets for 12.5 small block [Re: B3422W5] #479211
09/25/09 05:37 PM
09/25/09 05:37 PM
Joined: Feb 2003
Posts: 12,675
Columbia, CT
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moper Offline
I Live Here
moper  Offline
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Joined: Feb 2003
Posts: 12,675
Columbia, CT
With a true 12.5:1 and using bolts to hold it (stock ones, yes?) I think the best gasket you can get would be the choice. Why not just use what worked before?


Well, art is art, isn't it? Still, on the other hand, water is water! And east is east and west is west and if you take cranberries and stew them like applesauce they taste much more like prunes than rhubarb does. Now, uh... Now you tell me what you know.
Re: Bulletproof head gaskets for 12.5 small block [Re: moper] #479212
09/25/09 05:44 PM
09/25/09 05:44 PM
Joined: Jan 2003
Posts: 999
British Columbia
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toddd Offline
super stock
toddd  Offline
super stock
T

Joined: Jan 2003
Posts: 999
British Columbia
I'm using Fel-Pro aswell

13.5-1 @7500...no problems.

Re: Bulletproof head gaskets for 12.5 small block [Re: toddd] #479213
09/25/09 06:20 PM
09/25/09 06:20 PM
Joined: Jan 2003
Posts: 4,616
Kissimmee Fl.
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dusturbd340W5 Offline
master
dusturbd340W5  Offline
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Joined: Jan 2003
Posts: 4,616
Kissimmee Fl.
I am running felpro 1008 at 12.5-1 with head studs no problems so far


70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake

best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4
Re: Bulletproof head gaskets for 12.5 small block [Re: CJK440] #479214
09/25/09 07:11 PM
09/25/09 07:11 PM
Joined: Jul 2006
Posts: 4,595
On the south side of Nowhere
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S/ST 3040 Offline
master
S/ST 3040  Offline
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Joined: Jul 2006
Posts: 4,595
On the south side of Nowhere
What cylinder heads?

Re: Bulletproof head gaskets for 12.5 small block [Re: S/ST 3040] #479215
09/25/09 07:31 PM
09/25/09 07:31 PM
Joined: Oct 2008
Posts: 1,015
Down South
DaKuda Offline
super stock
DaKuda  Offline
super stock

Joined: Oct 2008
Posts: 1,015
Down South
Always had good luck with 1008 Fel-Pro.

Re: Bulletproof head gaskets for 12.5 small block [Re: DaKuda] #479216
09/25/09 08:35 PM
09/25/09 08:35 PM
Joined: Apr 2007
Posts: 2,327
Glendale, AZ
6
69L78Nova Offline
Banned. Forever.
69L78Nova  Offline
Banned. Forever.
6

Joined: Apr 2007
Posts: 2,327
Glendale, AZ
I ran 1008s for 7 years at 13 to 1, 7500rpm. No problem


1969 Nova
454/M21/3.31
Mild mid-11 second weekend cruiser

1994 F150 XLT Super Cab 2WD
5.0/4R70W/3.55
(Daily driver)
Re: Bulletproof head gaskets for 12.5 small block [Re: 69L78Nova] #479217
09/25/09 08:48 PM
09/25/09 08:48 PM
Joined: Nov 2004
Posts: 3,519
pacific northwest
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Stroker Scamp Offline
master
Stroker Scamp  Offline
master
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Joined: Nov 2004
Posts: 3,519
pacific northwest
fel pro here, tried cometics (they leaked)


footbrake N/A SB 408 Scamp 10.10 @ 132 street/strip
73 Duster 340 street strip 12.79 @ 105






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