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8/5/11 2:14am - Original Message: 'one piece vs. four piece pan gaskets'
daveo76
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Vancouver, WA - USA

Vette(s):
1976 Silver/Firethorn. L48, 4spd. Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.

Joined: 8/25/2005
Posts: 829
Guys, which would you use if you have the choice?  My engine kit has the four piece cork and rubber set but I had already purchased a blue one piece (both are fel-pro).  I know the one piece is desirable for an in-car install (so much easier) but since my engine is on a stand, I don't think that's a factor.  I want the most leak resistant option.  Just looking for your opinions.  One other factor to consider: the one piece has already been installed, but not run.  There are some remnants of Ultra black permatex in the corners, but I've peeled all I can off.  Thanks!   daveo762011-08-05 19:08:57

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1976 Silver/Firethorn.  L48, 4spd.  Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.
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8/5/11 7:29am - Reply: 'one piece vs. four piece pan gaskets'
yostusota
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York, PA - USA

Vette(s):
1969 daytona conv. all original 350 350 380 4 sp w/air..and hard top

Joined: 5/18/2010
Posts: 1518
Even though most look good in a two piece....If you don't want leaks use the one piece and ultra grey if you need any..

Rich

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My first parade at Carlisle 2010
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8/5/11 8:46am - Reply: 'one piece vs. four piece pan gaskets'
ebo Lifetime Member
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Holland Patent, NY - USA

Vette(s):
#1 *1980 White, Red interior 14,000 mile #2 *1980 Red, Oyster interior 93,000 miles Resto project car, rebuilt to 383 stroker

Joined: 6/3/2008
Posts: 4395
Perfect timing, the motor is about to come out of the Red vette because the pan needs to be replaced.
Evil Smileebo

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Evil Smileebo
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8/5/11 11:52am - Reply: 'one piece vs. four piece pan gaskets'
anips
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sonoma, CA - USA

Vette(s):
72 LT-1 AC coupe,69 l-36 coupe

Joined: 8/9/2002
Posts: 783
the fel-pro one piece is the way to go, 55-74 uses the thin timing cover to front of pan gasket, 75 and up uses the thick one,  its the pan that dictates which one to use not the timing cover, for those who don't know what pan they have, turn the pan up side down and place it on a flat surface or right side up and use a straight edge and measure the middle of the fron t opening, 21/4" uses the thin one , 23/8" uses the thick.

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8/5/11 1:11pm - Reply: 'one piece vs. four piece pan gaskets'
dcherr Gold Member
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Elkhart, IN - USA

Vette(s):
1975 Red T-Top 1972 Red Convertible

Joined: 10/7/2007
Posts: 208

Last year the 75 started leaking oil and I though that it was a rear main seal. After I found that the motor mounts were bad I started to look real had for the leak. The oil pan was rusty so I took it off and wire brush it and found that it had a rust hole by the dipstick. Replaced the pan and put a 1 piece pan gasket on and now no leaks. the 1 piece makes the job real easy. Unless some one is looking at the pan no one will know it is a 1 piece gasket.

 
The
Herr's


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8/5/11 9:23pm - Reply: 'one piece vs. four piece pan gaskets'
C3VETTE
Former Member
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Berkeley Springs, WV - USA

Vette(s):
1979 4spd Cpe

Joined: 9/10/2010
Posts: 44
 Felpro 1 piece unit is what I would go with. A little more on COST, but no seams that could eventually leak.I went this route his past winter, when I did some maintenance on mine.


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Gary

79 Coupe, rare 4spd.L-48,Edlebrock intake and Performer Carb,Mcleoad Street performer clutch, Hooker Super Comp chrome headers/side-pipes, Foose wheels,mild cam.Custom leather interior.


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8/5/11 10:06pm - Reply: 'one piece vs. four piece pan gaskets'
daveo76
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Vancouver, WA - USA

Vette(s):
1976 Silver/Firethorn. L48, 4spd. Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.

Joined: 8/25/2005
Posts: 829
Thanks guys.  I heard all votes for the one piece and none for the four piece - pretty much what I thought, too.  But the reason I asked is after looking at similar discussions on some other forums there was considerable debate with many saying they had problems with the one piece units.  But this is the site I trust, so that is the way I will go!  

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1976 Silver/Firethorn.  L48, 4spd.  Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.
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8/6/11 12:05pm - Reply: 'one piece vs. four piece pan gaskets'
anips
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sonoma, CA - USA

Vette(s):
72 LT-1 AC coupe,69 l-36 coupe

Joined: 8/9/2002
Posts: 783
one of the problems is you still have to make sure your gasket rails are straight, where the bolts go through the rail are sometimes pushed up from over tightening and kinda looks like a raised cone and and when bottomed out on the internal stops in the gasket doesn't allow the sides of the rails to be tight against the bottom of the block and rails of the pan, might have to do some dolley work, put a straight edge on the rails run it front to back and left to right and make sure theres no dips or high spots.  anips2011-08-06 09:32:20

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8/6/11 11:23pm - Reply: 'one piece vs. four piece pan gaskets'
daveo76
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Vancouver, WA - USA

Vette(s):
1976 Silver/Firethorn. L48, 4spd. Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.

Joined: 8/25/2005
Posts: 829
Yep, they were coned up a little at the bolt holes.  A little bit of light hammering with a ball peen seemed to take care of it.  After that the rails passed a straight edge test pretty well.  We'll see - installed the pan (with the one-piece gasket) on the block this afternoon.  Next step: install cylinder heads!  

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1976 Silver/Firethorn.  L48, 4spd.  Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.
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8/7/11 1:38am - Reply: 'one piece vs. four piece pan gaskets'
daveo76
Standard Member
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Vancouver, WA - USA

Vette(s):
1976 Silver/Firethorn. L48, 4spd. Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.

Joined: 8/25/2005
Posts: 829
Sorry for the blank post.  

Moderators - feel free to delete if you see this.  
daveo762011-08-06 22:43:15

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1976 Silver/Firethorn.  L48, 4spd.  Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.
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