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Old 10-10-2019, 12:45 PM
76TA462 76TA462 is offline
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Default Oil Pan Gasket

Does someone have a recommendation on using or not using a one-piece oil pan gasket for a 1976 455 (with the 5 tabs at the rear on the pan gasket surface), and a brand-part number. Instead of the normal 4 piece gasket Thanks.

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Old 10-10-2019, 01:03 PM
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I have had success with both. The one piece gasket is well worth the money in my opinion. It is designed for an oil pan with 3 tab holes at the rear. To use the one piece gasket, you would just have to cut the tabs off of the gasket or modify your pan to accept the tabs on the gasket. I don't have a part number but the one that I have used is on the BOP Engineering website.

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Old 10-10-2019, 01:34 PM
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I have installed 1 bought from Butler. The fit was excellent

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Old 10-10-2019, 04:15 PM
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My buddy has a clean, leak free engine with no pan gasket, just silicone.

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Old 10-10-2019, 05:46 PM
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I used the one piece from BOP. Very nice piece, excellent fit, and bone dry.

I've been a fan of them for years. I've used them on SBC and BBC engines for a couple of decades now since Felpro makes them readily available at your local parts store.

So it's nice to finally see someone stepped up for Pontiac. Did I say the one from BOP is a nice piece?

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Old 10-11-2019, 07:37 AM
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Here is my fix for the rubber rear seal leak problem. Second pic shows how I attach the pick-up tube so it doesn't fall out.

I buy a sheet of cork gasket material and cut it precisely to fit with a razor knife. Never had one drop of oil get past this set-up. The factory rubber seals can and will leak or slip out on you. The wide custom fit cork seal isn't going anyplace.

Never tried the one piece pan seal, but probably well worth the investment over the factory set-up for the later pans that used the "tit" type rubber rear pan seals......Cliff
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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),
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Old 10-11-2019, 08:52 AM
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I've had the rubber rear seals split on me. I use the cork/rubber one in the kit now. Put a thin coat of Ultra Black on mating surfaces and corners.

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Old 10-11-2019, 09:42 AM
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I had my BOP one piece on and off three times ... still doesn't leak. Have to pay attention to detail at the back though.

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Old 10-11-2019, 11:08 AM
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I used a Felpro 1 piece on a SBC. It was perfect. Daily driver for two years with no leaks.

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Old 10-11-2019, 11:12 AM
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Quote:
Originally Posted by Cliff R View Post
Here is my fix for the rubber rear seal leak problem. Second pic shows how I attach the pick-up tube so it doesn't fall out.

I buy a sheet of cork gasket material and cut it precisely to fit with a razor knife. Never had one drop of oil get past this set-up. The factory rubber seals can and will leak or slip out on you. The wide custom fit cork seal isn't going anyplace.

Never tried the one piece pan seal, but probably well worth the investment over the factory set-up for the later pans that used the "tit" type rubber rear pan seals......Cliff
It appears you use studs instead of bolts on your engine stand ?

Does that work easier ? OGR

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Old 10-11-2019, 12:58 PM
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Quote:
Originally Posted by Old Goat Racer View Post
It appears you use studs instead of bolts on your engine stand ?

Does that work easier ? OGR
Damn that makes sense!

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Old 10-11-2019, 04:12 PM
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Absolutely, makes everything about that deal easier........just make sure to use hardened material, not cheap/soft threaded rod.....

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Old 10-11-2019, 04:33 PM
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Quote:
Originally Posted by Cliff R View Post
Absolutely, makes everything about that deal easier........just make sure to use hardened material, not cheap/soft threaded rod.....
X 2, Cliff. I use either ARP or Milodon oil pan stud kits in all the engines I build. It simplifies the whole process of installing an oil pan.

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Old 10-14-2019, 09:15 PM
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I used the BOP one piece on my 389 and reused it after changing my pan after a year(the pan had a couple of small rust holes that were leaking). Sealed right up again. I would use the one piece again.

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Old 05-01-2023, 01:21 PM
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Quote:
Originally Posted by Cliff R View Post
Here is my fix for the rubber rear seal leak problem.
I buy a sheet of cork gasket material and cut it precisely to fit with a razor knife. Never had one drop of oil get past this set-up. The factory rubber seals can and will leak or slip out on you. The wide custom fit cork seal isn't going anyplace.

Cliff
I need to resurrect this thread...

Cliff, do you double-up that cork gasket to get the needed thickness?

The cork sheets are 1/2 the thickness of the cork supplied in the Felpro gasket kits. And with the Butler 1-piece torqued down I still have a gap of about 7/32".

Do you glue the cork using silicone gasket maker, or some other glue like Gorilla Glue?

I realize the Butler 1-Piece is thicker than the Felpro black gasket and the Felpro cork gasket so that might explain the gap. (I have all 3 types at my disposal)
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Old 05-01-2023, 02:48 PM
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Cliff are those studs to bolt oil pan on? Also looks like a SD on stand.

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Old 05-01-2023, 07:49 PM
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I use studs on my 455 for the oil pan...makes setting it up much easier.
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Old 05-02-2023, 02:13 PM
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Hmm .What studs are you using? I was thinking internal allen head studs. I was assembling Pontiac V8 years ago and broke one pan bolt. That was a bugger to get out.

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Old 05-02-2023, 04:46 PM
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Wish I could tell you the exact application….I cannot.

I purchased valve cover studs, ARP, for I think a Mopar engine. I liked the bullet nose aspect * shrug *

Not sure why I didn’t get Pontiac VC studs, as I believe they have the same thread as OP bolts.

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