305 head gaskets

80 monte · 10-22-2009, 01:15 PM

What head gaskets would you sugest for a 0.030" over 305, I dont want to run the stock 0.041" thick gaskets I want to be around 0.026- 0.020" thick compressed. The only ones I can find are from GM performance, just wondering if anyone else has a line or a lead on some different brands I could look into.

Thank you before hand. Cam

Greg Turk · 10-22-2009, 01:35 PM

Try Cometic... a bit more money but available in any specified thickness..., they are also reusable, a bonus considering the price!!!!
good luck fellow Canuck!!!
later

80 monte · 10-22-2009, 02:04 PM

Quote:

Originally Posted by Greg Turk

Try Cometic... a bit more money but available in any specified thickness..., they are also reusable, a bonus considering the price!!!!
good luck fellow Canuck!!!
later

Thank you I will try them any key words or a link I can try to make it a little quicker

Greg Turk · 10-22-2009, 02:29 PM

Ah, cometic.com
toll free 1-800- 752-9850
440-354-0777
they are out of OHIO

80 monte · 10-22-2009, 02:31 PM

thanks again

80 monte · 10-23-2009, 02:11 PM

Anyone else have a source other than GM perf as cometic does not carry anything under a 4.100" bore gasket. The 305's require somewhere in the 3.800" range bore on the gasket, if I go too big I am going to loose comp. and sealing capabilities and maybe the chance of heat soaking the spark plug cooling jackets.

Bob Gullett · 10-23-2009, 08:25 PM

Quote:

Originally Posted by 80 monte

Anyone else have a source other than GM perf as cometic does not carry anything under a 4.100" bore gasket. The 305's require somewhere in the 3.800" range bore on the gasket, if I go too big I am going to loose comp. and sealing capabilities and maybe the chance of heat soaking the spark plug cooling jackets.

We have ordered the 305 Cometic gaskets several times with the small bore.

james schaechter · 10-23-2009, 08:46 PM

Yes, Cometic makes all sizes. Most don't stock the small b ore stuff, but they make any size. We have 283 stuff made. Here are the thicknesses. If you need a contact at Cometic, let me know. Jim

.027
.030
.036
.040
.045
.051
.056
.060
.066
.070
.075
.080
.084
.086
.089
.092
.095
.098
.120
.140

Jamie Greening · 10-23-2009, 10:26 PM

Just ordered a pair 2 weeks ago for the camaro. It took about 5 day to get. You give them the bore and thickness and they custom make them. They were about 90 dollars a gasket but they reuseable. Call them they will take care of you.

J Halsey Jr · 10-24-2009, 03:31 AM

Corteco sells ones that are .028 thick crushed in there performance line for a 305.

10-22-2009, 01:15 PM	#1
80 monte Junior Member Join Date: Oct 2009 Location: Cloverdale B.C. Canada Posts: 5 Likes: 0 Liked 0 Times in 0 Posts	305 head gaskets What head gaskets would you sugest for a 0.030" over 305, I dont want to run the stock 0.041" thick gaskets I want to be around 0.026- 0.020" thick compressed. The only ones I can find are from GM performance, just wondering if anyone else has a line or a lead on some different brands I could look into. Thank you before hand. Cam __________________ It's only a 305 305 0.030" over, 12:1 comp, 461 casting heads, 1.90" in & 1.50" ex, Comp Cams XE284H, [SIGPIC][/SIGPIC]

10-22-2009, 01:35 PM	#2
Greg Turk Member Join Date: Jun 2007 Location: Jacksonville,Illinois Posts: 118 Likes: 1 Liked 19 Times in 4 Posts	Re: 305 head gaskets Try Cometic... a bit more money but available in any specified thickness..., they are also reusable, a bonus considering the price!!!! good luck fellow Canuck!!! later __________________ TURKMAN 4002 Stock, 4002 Super Stock

10-22-2009, 02:29 PM	#4
Greg Turk Member Join Date: Jun 2007 Location: Jacksonville,Illinois Posts: 118 Likes: 1 Liked 19 Times in 4 Posts	Re: 305 head gaskets Ah, cometic.com toll free 1-800- 752-9850 440-354-0777 they are out of OHIO __________________ TURKMAN 4002 Stock, 4002 Super Stock

10-22-2009, 02:31 PM	#5
80 monte Junior Member Join Date: Oct 2009 Location: Cloverdale B.C. Canada Posts: 5 Likes: 0 Liked 0 Times in 0 Posts	Re: 305 head gaskets thanks again __________________ It's only a 305 305 0.030" over, 12:1 comp, 461 casting heads, 1.90" in & 1.50" ex, Comp Cams XE284H, [SIGPIC][/SIGPIC]

10-23-2009, 02:11 PM	#6
80 monte Junior Member Join Date: Oct 2009 Location: Cloverdale B.C. Canada Posts: 5 Likes: 0 Liked 0 Times in 0 Posts	Re: 305 head gaskets Anyone else have a source other than GM perf as cometic does not carry anything under a 4.100" bore gasket. The 305's require somewhere in the 3.800" range bore on the gasket, if I go too big I am going to loose comp. and sealing capabilities and maybe the chance of heat soaking the spark plug cooling jackets. __________________ It's only a 305 305 0.030" over, 12:1 comp, 461 casting heads, 1.90" in & 1.50" ex, Comp Cams XE284H, [SIGPIC][/SIGPIC]

10-23-2009, 08:46 PM	#8
james schaechter VIP Member Join Date: Dec 2004 Location: Cumming GA Posts: 1,986 Likes: 1,279 Liked 1,425 Times in 295 Posts	Re: 305 head gaskets Yes, Cometic makes all sizes. Most don't stock the small b ore stuff, but they make any size. We have 283 stuff made. Here are the thicknesses. If you need a contact at Cometic, let me know. Jim .027 .030 .036 .040 .045 .051 .056 .060 .066 .070 .075 .080 .084 .086 .089 .092 .095 .098 .120 .140 __________________ James Schaechter 3163 STK

10-23-2009, 10:26 PM	#9
Jamie Greening Junior Member Join Date: Jun 2007 Posts: 45 Likes: 0 Liked 0 Times in 0 Posts	Re: 305 head gaskets Just ordered a pair 2 weeks ago for the camaro. It took about 5 day to get. You give them the bore and thickness and they custom make them. They were about 90 dollars a gasket but they reuseable. Call them they will take care of you.

10-24-2009, 03:31 AM	#10
J Halsey Jr Junior Member Join Date: Mar 2008 Posts: 17 Likes: 0 Liked 0 Times in 0 Posts	Re: 305 head gaskets Corteco sells ones that are .028 thick crushed in there performance line for a 305.