Cometic gaskets on BBC? - Team Camaro Tech
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post #1 of 4 (permalink) Old Apr 20th, 11, 10:34 PM Thread Starter
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Big Dave
 
Join Date: Oct 2004
Location: Massachusetts
Posts: 662
Cometic gaskets on BBC?

Has anyone here used "Cometic" gaskets and have any feedback?

I was thinking of using them on my mostly street and sometimes strip motor and want to make sure im not going to be having problems with this type of gasket.

Im using the Felpro 1057 gasket now and they seem to be ok...just want a little more insurance when its boosted. (8-10lbs)

Thanks. Dave.

'69 camaro, was orig SS 396 car.
original tranny & 12 bolt

Now:
568 ci, Merlin Pro block
Callies crank, Oliver rods
AFR CNC 325, Nash 5 speed, 9'' Ford 35 spline locker
F1 Procharger that will get on soon...
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post #2 of 4 (permalink) Old Apr 20th, 11, 11:06 PM
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darrell
 
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Location: texas
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Re: Cometic gaskets on BBC?

all the engine builders around here are using them if your in the high compresion, lots of nos or turbos and havent had problems-personally i still use the same felpro gasket w 13-1 and 250 shot with no problems but if i ever do , i am going to them
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post #3 of 4 (permalink) Old Apr 20th, 11, 11:53 PM Thread Starter
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Big Dave
 
Join Date: Oct 2004
Location: Massachusetts
Posts: 662
Re: Cometic gaskets on BBC?

Thanks Darrell.

'69 camaro, was orig SS 396 car.
original tranny & 12 bolt

Now:
568 ci, Merlin Pro block
Callies crank, Oliver rods
AFR CNC 325, Nash 5 speed, 9'' Ford 35 spline locker
F1 Procharger that will get on soon...
69 merlinpro565 is offline  
 
post #4 of 4 (permalink) Old Apr 21st, 11, 06:02 AM
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Tom
 
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Join Date: Mar 2006
Location: Tampa, Florida
Posts: 1,004
Re: Cometic gaskets on BBC?

I've had good luck with them on my new 496, my builder likes them, so I went with his recommendation. 10.5:1 compression

If you search Team Chevelle you'll see alot of discussion on the recommended RA for proper sealing. From the Cometic site:

"A surface finish of 50 RA (roughness average) or finer, is recommended for a proper gasket seal. Anything rougher may conflict with the gasket design."

67 new build alum. 406 | 69 RS/SS 496 631 HP / 618 TQ | 73 Z28 Survivor 36k miles | 89 IROC Z 2500 miles | 02 SS 35th Anniv. LE 645 miles |11 SS Berger 550HP (1 of 25) | 14 ZL1 6M Recaros
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