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#1
11-11-2010, 07:07 PM
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Head Gaskets
what are you guys using for head gaskets (quality).......felpro, rol, coteco, cometic ????......4.185 bore size......
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71 GTO, 463, KRE 295 cfm heads ported by SD Performance, RPM intake, Qjet, Dougs Headers, Comp cams HR 246/252 ...11 to 1 , 3.55 cogs, 3985lbs.....day three- 11.04 at 120mph ....1.53 60', 6.98 1/8 mile |
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#2
11-11-2010, 07:09 PM
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Iron heads. Felpro..
Aluminum heads.. Cometic.. Charles
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68 Firebird. IA2 block, 505 cu in, E-head, Solid roller 3650 weight. Reid TH400 4:11 gear. 29" slick. Best so far 10.12@133 mph. 1.43 60 ft. 76 Trans am, TKX .81 o/d, 3.73 Moser rearend, 468 with KRE D-ports, Doug headers, 3" Exh. |
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#3
11-11-2010, 07:10 PM
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I run the felpro 1016's on both my iron and aluminum heads never no worries
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Darby 74 Grandville 2Dr 455 c.i 4550# 2011 1.60 60 ft,7.33@94.55-11.502@117.74  2017, 74 firebird -3600 lbs (all bests) 1.33 60 ft, 6.314@108.39 9.950@134.32 M/T 275/60 ET SS Drag Radial 2023,(Pontiac 505) 1.27 60 ft, 5.97@112.86, 9.48@139.31.... 275/60 Radial Pro's |
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#4
11-11-2010, 07:21 PM
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Cometics. .051" thick 4.20 bore because I run aluminum rods and 13.5 to 1 cr. Same bore as you 4.185.
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68 Firebird Are you running with the wind or breaking it? |
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#5
11-11-2010, 07:26 PM
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ROL HG31320HT is what we use is most all builds. In Racing apps we use the Corteco High Performance Gasket. John Angeles also runs this gasket. It is .038 thick.
Ace
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Am I glad I got out of the business I was in? HELL YEAH!!! |
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#6
11-11-2010, 07:34 PM
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I used Felpro 1016 gaskets on my 463 with no problems. 13.25 to 1 with iron heads and 14.5 to 1 aluminum heads.
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Todd Sedlmeier Who ever thought pinewood derby cars would lead to this! October 2004 HPP Shootout participate http://www.highperformancepontiac.co...out/index.html 86 Grand Prix 535 High Port 8.93 @ 153 65 GTO 433 High Port 12.04 @ 113 |
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#7
11-11-2010, 08:26 PM
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Quote:
I have been using the ROL HG31320HT gasket for the last couple of years. They seem to work real well except somewhere between 105 to 130 passes they are coming apart between the exhaust valves at cylinders 3,5 and 4,6 putting water in the cylinders. I think they came in Corteco boxes the last time I ordered them from you. Are the Corteco High Performance Gaskets you are talking about a different part number? If so what is the part number and will they hold up better than the ones I'm using? Or do I just need to continue order 2 sets at a time and change them out in the middle of the season? Thanks.
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Come take a ride http://www.youtube.com/watch?v=P7Y8Awfk2I0 2008, 2013, 2015, 2016, 2019 Central Il Dragway Mod track champion and 2015 IHRA Div 5 Mod champion 
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#8
11-11-2010, 08:45 PM
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1016's here, 15psi. with the turbo 3yrs 10k miles.
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#9
11-12-2010, 07:39 AM
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Felpro 1016 9 to 1 cr =) .
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1978 ,t/a 3660# 455 2010 / 1/8 7.86 1/4 12.40 @ 109,19 http://www.youtube.com/watch?v=6PaHbLnszS0 http://www.youtube.com/watch?v=XMxhM...eature=related 12.01@109 http://www.youtube.com/watch?v=MC-dganA2jQ 100 shot 11.78. A,ll new head cam combo 96 ported bye Mike Chell!! Comp cam yes the 284 XE. Firsthand outing of the street 7.69 1/8 12.15 109.47 hot and humid.not hooking. 1.73 60. |
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#10
11-12-2010, 09:33 AM
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Cometic head gaskets here, 810 passes and counting, with slightly less than 13/1 static compression...
In the past everytime I removed a Felpro gasket, the area between the two center exhaust valves looked cooked...
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1969 Firebird, Tx3-455/468 machined by CVMS E-heads by Dave Wilcox/Comp Cams 300B-6 flat solid 850DP on E-85 by Eric Niefert/T2 1" plastic spacer T-400/PTC 4000/390's/30x9 Hoosier radial slicks,#3400 1.38 60' 6.32 @ 108 MPH at Northeast Dragway NC 5/23/15 (9th pass on new engine) https://m.youtube.com/watch?v=ePCu2v...ature=youtu.be 1.37 60' 6.26 @ 109 half track, 9.86 @ 136 1/4 mile, #3350 11/26/16 at Richmond Dragway (125th pass on new engine) |
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#11
11-12-2010, 09:34 AM
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Fel Pro worked great for us up to about 900 hp. We're using Flatout coated copper gaskets now and are also using them in the funny car engine build.
FWIW: Eric |
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#12
11-12-2010, 10:08 AM
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No orings? are they Copper gaskets or copper coated?
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1969 carousel red firebird 455, richmond 5 speed 1964 540 gto 1971 lemans sport convertible 1972 Maverick under slow construction |
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#13
11-12-2010, 11:08 AM
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We have o-rings in the head, receiver grooves in the block.
The gaskets are solid copper with Flatout's RCC coating on them. Eric |
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#14
11-12-2010, 01:07 PM
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Cometics on all our engines for the last 6 years.
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#15
11-12-2010, 01:23 PM
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cometics here also.
i have used the 1016s in the past with good results. as long as it is under 800hp.
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'78 Ford Fairmont 526ci pontiac; true 10.5 tires and stock suspension. 5.14 @140.5 w/nos; 8.86@151 all motor.8.17@172 1/4 mile w/nos |
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#16
11-12-2010, 01:52 PM
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Quote:
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#17
11-12-2010, 01:54 PM
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For balls to the wall racing
I run solid deck. Solid surface heads. O-ring the block. 0-ring the heads with about .040 offset. Flatout Copper gaskets with coating.
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#18
11-12-2010, 04:13 PM
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THIN gaskets?
I recently had some head bolts on a fresh KRE head rebuild loosen up. Was using ROL gaskets (the cheapie ones) and Dave at SD discouraged those for his CNC heads. Upon retorque, they seem to be okay.
Here's a related question: Anyone know of a THIN (.020" range) head gasket for ponchos (to say, on a stock-type engine, bring the quench tighter when the pistons are down the hole at TDC)? |
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#19
11-13-2010, 01:03 PM
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What are the thinnest cometics???
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1977 Black Trans Am 180 HP Auto, essentially base model T/A. I'm the original owner, purchased May 7, 1977. Shut it off Shut it off Buddy, I just shut your Prius down... 
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#20
11-13-2010, 05:49 PM
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.027 as far as i know.
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1969 carousel red firebird 455, richmond 5 speed 1964 540 gto 1971 lemans sport convertible 1972 Maverick under slow construction |
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