Head Gasket Woes? Fel-Pro 1009
#3222633
03/25/24 08:56 AM
03/25/24 08:56 AM
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Joined: Jun 2022
Posts: 31
Pennsylvania
19_Dart_68
OP
member
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OP
member
Joined: Jun 2022
Posts: 31
Pennsylvania
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Hey all. So, I'm in the process of mocking up my 505 stroker...440, .030 over, etc...(Factory iron block, TrickFlow aluminum heads)
I have Fel-Pro 1009 gaskets, and I drop one on the block and to my dismay, the fire ring is over-hanging the factory chamfer by a noticeable amount. These gaskets are supposed to be 4.410" in diameter. Everything I am reading says this is a no-no situation because it will trap combustion pressure under the ring and lift the gasket...
So, what are my options? Cometic MLS 4.500" ? Rubber-coated Copper 4.500"? LS swap? (J/K)
68 Dart - 440 Swap in Progress...please stand by
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Re: Head Gasket Woes? Fel-Pro 1009
[Re: 19_Dart_68]
#3222638
03/25/24 09:16 AM
03/25/24 09:16 AM
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Joined: Jan 2012
Posts: 2,636
Stuttgart, Arkansas
rickseeman
master
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master
Joined: Jan 2012
Posts: 2,636
Stuttgart, Arkansas
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Some blocks have a gigantic chamfer in the top of the bore  and all I know to do is go to a gasket with a bigger hole. My friend recently had the same problem. I feel your pain. The Fel-Pro 1105 is real big, gasket hole 4.59. I wonder if they have anything in between? If not you will have to change brand.
2011 Drag Pak Challenger
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Re: Head Gasket Woes? Fel-Pro 1009
[Re: 19_Dart_68]
#3222642
03/25/24 09:28 AM
03/25/24 09:28 AM
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Joined: Feb 2005
Posts: 20,164
PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,164
PA.
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Hey all. So, I'm in the process of mocking up my 505 stroker...440, .030 over, etc...(Factory iron block, TrickFlow aluminum heads)
I have Fel-Pro 1009 gaskets, and I drop one on the block and to my dismay, the fire ring is over-hanging the factory chamfer by a noticeable amount. These gaskets are supposed to be 4.410" in diameter. Everything I am reading says this is a no-no situation because it will trap combustion pressure under the ring and lift the gasket...
So, what are my options? Cometic MLS 4.500" ? Rubber-coated Copper 4.500"? LS swap? (J/K)
If you think the block is bad check it out on the head. Edelbrock head fit is terrible
1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27
Livin and lovin life one day at a time
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Re: Head Gasket Woes? Fel-Pro 1009
[Re: NITROUSN]
#3222653
03/25/24 10:38 AM
03/25/24 10:38 AM
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Joined: Jun 2022
Posts: 31
Pennsylvania
19_Dart_68
OP
member
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OP
member
Joined: Jun 2022
Posts: 31
Pennsylvania
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Is this one is ok for 10.5:1 compression ratio?
68 Dart - 440 Swap in Progress...please stand by
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Re: Head Gasket Woes? Fel-Pro 1009
[Re: Stanton]
#3222671
03/25/24 12:17 PM
03/25/24 12:17 PM
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Joined: May 2005
Posts: 1,966
Apollo, PA.
B1MAXX
top fuel
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top fuel
Joined: May 2005
Posts: 1,966
Apollo, PA.
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x3 I ran them at 14 to 1. 10.5 should be no sweat I think fel-pro says good to 12 to 1
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Re: Head Gasket Woes? Fel-Pro 1009
[Re: AndyF]
#3222686
03/25/24 01:06 PM
03/25/24 01:06 PM
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Joined: Dec 2013
Posts: 4,669
Wichita
GY3
master
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master
Joined: Dec 2013
Posts: 4,669
Wichita
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With Trick Flow heads you should go straight to Cometic gaskets. Don't bother with any of the cheap stuff, order the correct parts and do it once. x4! I tried Fel-Pro's with my 505 build initially and had issues. No issues with Cometics (I've used 2 different thicknesses) over the last 9 years. Lots of abuse and a rowdy jug!
'63 Dodge 330
11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.
10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
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Re: Head Gasket Woes? Fel-Pro 1009
[Re: GY3]
#3222849
03/26/24 10:16 AM
03/26/24 10:16 AM
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Joined: Dec 2021
Posts: 1,118
Loudoun County, VA
Brad_Haak
super stock
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super stock
Joined: Dec 2021
Posts: 1,118
Loudoun County, VA
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My suggestion is anyone considering the Fel-Pro 8519 look into the 17059 Marine gasket instead: https://board.moparts.org/ubbthread...38/fel-pro-17059-marine-head-gasket.html
2021 Challenger 6.4L Scat Pack 1320
100% stock: 1.680, 11.894 at 113.75 (DA 175 ft)
weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)
1973 Challenger 452 ci street/strip [2008]
pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
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