305 head gasket recommendations
#1
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Car: 82 Z28
Engine: Al LT1 headed LG4 305
Transmission: TH350
Axle/Gears: 3.73 posi with spacer
305 head gasket recommendations
I'm looking for a good 305 head gasket. I want the smallest volume so i can get alittle compression boost. I've searched on here and didn't find what i wanted. I know GM has some pretty good head gaskets but i don't know if there is something that will work good on a 305. What is the shim head gasket used on the L69? I like the GMPP 10105117 Compositin w/ Stainless faces but its a 4.100" and .028" thick. or 3830711 steel shim .026" thick 4.100" bore. But these have huge bores. Anything closer to the 305 bore?
Thanks
Thanks
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Car: 82 Z28
Engine: Al LT1 headed LG4 305
Transmission: TH350
Axle/Gears: 3.73 posi with spacer
I know 305's suck and have limited potential, but i want to port my 416 heads until i get an LS1.
Last edited by ME Leigh; 11-01-2004 at 11:40 AM.
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Car: 83Z28 HO
Engine: Magnacharged Dart Little M 408
Transmission: G Force 5 speed
Axle/Gears: Moser 9" w/Detroit Trutrac
You might wanna try the shim type gasket the HO motors came with. I don't know what the compressed thickness is, but it seems much thinner than Fel-pros...
#5
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Car: 82 Z28
Engine: Al LT1 headed LG4 305
Transmission: TH350
Axle/Gears: 3.73 posi with spacer
Thats what i'm trying to find, i can't find it anywhere, does anybody know what it is or the pn#
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Car: 83Z28 HO
Engine: Magnacharged Dart Little M 408
Transmission: G Force 5 speed
Axle/Gears: Moser 9" w/Detroit Trutrac
Sorry - I just noticed you said that in your original post!!
Did you try calling the parts dept. at a dealer yet??
Did you try calling the parts dept. at a dealer yet??
#7
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Car: 82 Z28
Engine: Al LT1 headed LG4 305
Transmission: TH350
Axle/Gears: 3.73 posi with spacer
I guess thats what i will have to do, i can't find anything on the GM parts places on the internet.
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Car: 82 Z28
Engine: Al LT1 headed LG4 305
Transmission: TH350
Axle/Gears: 3.73 posi with spacer
Alright i found a Felpro: fel 8510PT
Application: GM PROD. V8, 262, 305(5.0l)-VIN M Eng., 1975-01
Now does anybody know any specs or used this gasket before. I can't find the specs anywhere, summit, jegs, fel-pro.
I also found a GM pn# used by Hotrod in a 305 buildup they did in 83, but i can't find that either. Head Gaskets.........Chevrolet..............................462690
Application: GM PROD. V8, 262, 305(5.0l)-VIN M Eng., 1975-01
Now does anybody know any specs or used this gasket before. I can't find the specs anywhere, summit, jegs, fel-pro.
I also found a GM pn# used by Hotrod in a 305 buildup they did in 83, but i can't find that either. Head Gaskets.........Chevrolet..............................462690
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Car: 83Z28 HO
Engine: Magnacharged Dart Little M 408
Transmission: G Force 5 speed
Axle/Gears: Moser 9" w/Detroit Trutrac
Hmmmm.....that's odd.
Here's what I'd do. Tell the dealer you want a stock head gasket for a 83 305 High Output motor, vin code "7". See if he gives you the same part number you have.
That's what mine used, might work!
Oh, and I disagree...305's don't suck. I loved mine! But I had the L69 version...... Just waitin for another car to drop it in!
Here's what I'd do. Tell the dealer you want a stock head gasket for a 83 305 High Output motor, vin code "7". See if he gives you the same part number you have.
That's what mine used, might work!
Oh, and I disagree...305's don't suck. I loved mine! But I had the L69 version...... Just waitin for another car to drop it in!
#10
Re: 305 head gasket recommendations
The Gm head gasket #462690 is a steel shim embossed style peice.
This gasket is made to work with the GM lite-weight head casting, it will seal the lower part of the head in the water jacket area.
It has the 305 bore size and i've measured the compressed thickness at 0.016"
If you call GM parts counter they will cross #462690 over to 10105115 which is a composition gasket that compresses to 0.026"
tough peice to get your hands on
This gasket is made to work with the GM lite-weight head casting, it will seal the lower part of the head in the water jacket area.
It has the 305 bore size and i've measured the compressed thickness at 0.016"
If you call GM parts counter they will cross #462690 over to 10105115 which is a composition gasket that compresses to 0.026"
tough peice to get your hands on
Last edited by SnakePlissken; 10-17-2007 at 02:57 PM. Reason: info for the archives
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Well, that search function seems to be doing its job.
Welcome aboard thirdgen.org. Looks like you have access to GM information. Although it's about 3 years late in this case.
Welcome aboard thirdgen.org. Looks like you have access to GM information. Although it's about 3 years late in this case.
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