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#1
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Best header gaskets
What header gaskets are you all using? I’ll be running Doug’s round port headers on Edelbrock aluminum heads. I’ve heard a lot of people have success with Remflex but have never personally run them myself. I also have heard of people using The Right Stuff gasket maker with good success but I’m not sure about that since it’s only rated to 450 degrees.
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1967 GTO, 432 (428+.030), 4-bolt mains, factory Nodular crank, scat rods, icon dished pistons, Lunati HR 243/251@.050, .618/.622 lift, Edelbrock 72cc round port heads, 10.5:1, offy 2-4 intake, Edelbrock 650cfm carbs, Super T10 trans (2.64 first), BOP 10 bolt w/ Eaton posi and 3.36 gears |
#2
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Remflex for sure.Tom
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#3
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I have had different sets on mine my top picks ....Remflex /Percys....
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#4
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For Sure Remflex for the street, we also had great success with Permatex Ultra Copper as well for our race engines, but for the street you cant best Remflex..
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1978 Trans Am Pump Gas 461 Stroker |
#5
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Same application. I use regular old Mr. Gasket, they work fine.
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" Is wearing a helmet illegal" Mike Kerr 1-29-09 |
#6
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Remflex here as well. Before they get squeezed though they are thick, so you might need longer header bolts.
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1967 Firebird 462 580hp/590ftlbs 1962 Pontiac Catalina Safari Swapped in Turd of an Olds 455 Owner/Creator Catfish Motorsports https://www.youtube.com/@CatfishMotorsports |
#7
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Alright, remflex it is, I see on their website, they claim there is no need to retorque after a couple heat cycles, is it best to retorque anyways?
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1967 GTO, 432 (428+.030), 4-bolt mains, factory Nodular crank, scat rods, icon dished pistons, Lunati HR 243/251@.050, .618/.622 lift, Edelbrock 72cc round port heads, 10.5:1, offy 2-4 intake, Edelbrock 650cfm carbs, Super T10 trans (2.64 first), BOP 10 bolt w/ Eaton posi and 3.36 gears |
#8
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You need to at least check them. I had a couple come loose after the first time.
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1967 Firebird 462 580hp/590ftlbs 1962 Pontiac Catalina Safari Swapped in Turd of an Olds 455 Owner/Creator Catfish Motorsports https://www.youtube.com/@CatfishMotorsports |
#9
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Remflex here too..... never a leak
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1973 Firebird Navajo Orange w/shaker,1973 400/461,1972 Intake SD CNC'd,1977 Q-Jet 800 CFM w/ Cliffs Kit,Tanks Inc PA4 255 Walbro intank pump ,-8an feed/return,RobbMc Regulator,RobbMc 40 micron filter,253 CFM 6x-8's w/H.S 1:5 Roller Rockers,SD Stump Puller H/R Cam 230/236 @.050 112 lobe separation 565/.570 lift,Crower Solid Rollers,28150 Hedman Headers,3" exhaust,full tailpipes,350 Turbo,9.5" 3200 Converter,3:42 gear,8.5 posi,C/E slide-alinks,Koni adj frt shocks,Best 12.18@110.55 Lookin for 11's |
#10
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1965 Pontiac LeMans. M21, 3.73 in a 12 bolt, Kauffman 461. |
#11
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6... Not on my Pontiac but on my Datsun Z with header. I will highly recommend.
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Greg Reid Palmetto, Georgia |
#12
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must be the odd one but I run standard Fel pro header gasket....never have leaks. Seem to last 5 years or more. They stay tight as well.
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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 |
#13
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High temp RTV on a street 455 D port with Hooker headers since 1990............
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#14
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Felpro blue header gaskets are excellent. Never had a leak using one to date no matter how poorly made the headers were at the flanges.......Cliff
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If you can read this, thank a teacher. If you can read this in English, thank a Veteran! https://cliffshighperformance.com/ 73 Ventura, SOLD 455, 3740lbs, 11.30's at 120mph, 1977 Pontiac Q-jet, HO intake, HEI, 10" converter, 3.42 gears, DOT's, 7.20's at 96mph and still WAY under the roll bar rule. Best ET to date 7.18 at 97MPH (1/8th mile), |
#15
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I used Mr Gasket on my round port 428 with Doug's headers. However, I had to double up on the gasket to make them seal off good.
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#16
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Fel-Pro. Blue gaskets here.
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#17
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I ran the Doug's gaskets that came with the headers for years. When I moved the headers to my 455, I ordered new "Doug's" gaskets, I believe from Summit. A completely different gasket. Neither leaked...or, I guess in the case of the newest ones, leaks. Flat mounting surfaces, thick flanges and the right bolts will generally get you no leaks with a decent gasket and a little bit of care.
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frittering and wasting the hours in an off hand way.... 1969 GTO, 455ci, 230/236 Pontiac Dude's "Butcher Special" Comp hyd roller cam with Crower HIPPO solid roller lifters, Q-jet, Edelbrock P4B-QJ, Doug's headers, ported 6X-8 (97cc) heads, TKO600, 3.73 geared Eaton Tru-Trac 8.5", hydroboost, rear disc brakes......and my greatest mechanical feat....a new heater core. |
#18
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I use copper. With a good header and mounting flange they've worked good for me for a couple decades on a few cars, and are reusable.
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#19
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I use the Mr. Gasket Ultra-Seal ones, the grey ones, they work really well, and easily available.
.
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. 1970 GTO Judge Tribute Pro-Tour Project 535 IA2 http://forums.maxperformanceinc.com/...d.php?t=760624 1971 Trans Am 463, 315cfm E-head Sniper XFlow EFI, TKO600 extreme, 9", GW suspension, Baer brakes, pro tour car https://forums.maxperformanceinc.com...ght=procharger Theme Song: http://www.youtube.com/watch?v=7zKAS...ature=youtu.be |
#20
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Been using my copper gasket for 20+ years with no issues. Couldn't tell you what brand though.
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- Mike '69 Firebird 400 - Goldenrod Yellow, 455 +.060, '6s-7' heads, Comp Cam 276AH-10 (51-309-4), TH400, Ford 9-inch w/3.08, 800cfm Q-jet, Stock Intake, Hooker Headers, Flowmasters '68 Coronet 500 Convertible - Medium Gold Metallic, stock 318 +100,000 miles |
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