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#1
01-19-2004, 09:40 PM
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Went to put my E heads on the 475 tonight. I only had one 1016 Felpro, so I thought I'd try the "Butler" gaskets that I had in stock. As I was slipping the head over the studs, I noticed the gasket actually is smaller than the bore by several thousands on the outside of the block, and has several thousands of gap on the intake side.
The bore size is 4.215. 1. I figured I shouldn't use these gaskets, Comments?  2. Could my "Bore job" be off? 3. What is the advertised max bore size for the Butler gasket?? BTW, Block is zero decked. This is not a "new" build, just a freshen up. 1016's have worked fine for years. Thx, Bill GT37 3600lbs...as featured on the cover of Pontiac Enthusiast Jan/Feb 2002 DOT/mufflers-all motor 6.49 @ 108 10.14 @ 133
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GT37 3625lbs..Fastest bench seat, column shift, all steel,no power adders car at Norwalk 1.35 w/29.5x10.5x15 6.42 @ 109 10.09 @ 133 |
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#2
01-19-2004, 09:40 PM
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Went to put my E heads on the 475 tonight. I only had one 1016 Felpro, so I thought I'd try the "Butler" gaskets that I had in stock. As I was slipping the head over the studs, I noticed the gasket actually is smaller than the bore by several thousands on the outside of the block, and has several thousands of gap on the intake side.
The bore size is 4.215. 1. I figured I shouldn't use these gaskets, Comments? 2. Could my "Bore job" be off? 3. What is the advertised max bore size for the Butler gasket?? BTW, Block is zero decked. This is not a "new" build, just a freshen up. 1016's have worked fine for years. Thx, Bill GT37 3600lbs...as featured on the cover of Pontiac Enthusiast Jan/Feb 2002 DOT/mufflers-all motor 6.49 @ 108 10.14 @ 133
__________________
GT37 3625lbs..Fastest bench seat, column shift, all steel,no power adders car at Norwalk 1.35 w/29.5x10.5x15 6.42 @ 109 10.09 @ 133 |
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#3
01-19-2004, 10:02 PM
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I would call them asap.
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Have A Great Day |
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#4
01-20-2004, 08:47 AM
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I think they make a 4.200 and 4.250. Shouldn't stick in the bore, but you wouldn't be the first to do it.
-Rob |
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#5
01-20-2004, 09:55 AM
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Butler's catalog shows the #19375 head gasket for the 389" and 421" engines, the #19374 for the 400" and 455" engines. I would also call them. http://www.jbp-pontiac.com
Robert Williams
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"Three may keep a secret, if two are dead" ~ Benjamin Franklin ~ |
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#6
01-20-2004, 10:18 AM
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They also make one for the big IA bore size.
Fist fulla bullets and a chest fulla teflon.... -Biggee Smalls |
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#7
01-20-2004, 10:21 AM
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i ordered the fel pro gaskets for my rebuild. the bore size is 4.212...am i going to run into this same problem?
97 Trans Am 383 stroker and some bolt-ons 9.33 @ 79 74 Formula 3800 lbs., d-ports, 9" slicks 11.84 @ 116 |
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#8
01-20-2004, 10:26 AM
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FelPro I think has a 4.300 diameter for the 1016s.
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
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#9
01-20-2004, 10:55 AM
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The Fel-Pro #1016 has the 4.300" bore diameter as Skip said, the 4.300" is the only size i use on the 455" block. My new street engine is built with Cometic head gaskets .036" thick with a 4.300" ROUND diameter, no reliefs in this gasket. These Cometic gaskets fit perfect, no problems with a .035" overbore and E-heads.
Robert Williams
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"Three may keep a secret, if two are dead" ~ Benjamin Franklin ~ |
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#10
01-20-2004, 06:04 PM
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Robert what did the gaskets cost u and are u spraying ur motor?
66 GTO RED TIGER
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 1963 Cat SD Clone (old school) streeter 1964 GTO post coupe, tripower, 4speed (build) 1965 GTO 389 tripower, 4 speed, driver 1966 GTO dragcar 1966 GTO Ragtop 1969 Tempest ET clone street/strip 1969 GTO Judge RA lll, auto 1969 GTO limelight Conv. 4speed go and show (sold) 1970 GP SSJ 1970 GTO barn find..TLB…390 horse?….yeh, 390 1972 GTO 455 HO, 4 speed, (build) 1973 Grand Safari wagon, 700hp stoplight sleeper 525ci DCI & 609ci LM V head builds |
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#11
01-20-2004, 06:47 PM
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No spray, piston to deck .004" gasket .036" total .040" piston to head for good quench. Cost $164.00 a pair, not cheap but a very good gasket and you can adjust compression with the thickness. You can get them in .025", .027", .030", .036", .040", .043", .045", .054", .067", .078", .120" thick. Bore sizes 3.950", 4.160", and 4.300". I buy them thru Rob at pietrzak@bright.net
Robert Williams
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"Three may keep a secret, if two are dead" ~ Benjamin Franklin ~ |
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#12
01-20-2004, 08:20 PM
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I am running the rol gaskets now and they seem to fit ok.I have seen the problem you are talking about in my younger years and put them on anyway.I blew one at 30 runs at 12 to 1 comp. between the center cylinders.I would not run them.
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Be carefull of the feet you step on today.They may be attached to the a$$ you kiss tomorrow. |
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#13
01-20-2004, 08:43 PM
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I can also be reached through my cell 419-560-1004, may have to leave a message, still in transition to having my own shop and normal land lines.
-Rob |
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#14
01-20-2004, 10:17 PM
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Update - I talked with Jim Butler today about the gaskets. We are talking about the 400/455 gaskets made from the orig GM pattern, with the water holes reduced in size to better match the block holes and give more strength to the sealing area.
They do overhang slightly at .060, with my bore being .065 it was even more noticeable. Jim says people have been using them for years successfully with the .060 overbore. I feel uncomfortable with the amount of projection and will use 1016's. I worry about the seal with part of the ring overhanging, and the posibility of detonation from the "tin" in the combustion chamber. BTW, the bore diam of the gasket appears to be 4.20, so for bores under this, it should be fine...... Bill ... It's good to hear we have some other choices for the larger bores, THX!! GT37 3600lbs...as featured on the cover of Pontiac Enthusiast Jan/Feb 2002 DOT/mufflers-all motor 6.49 @ 108 10.14 @ 133
__________________
GT37 3625lbs..Fastest bench seat, column shift, all steel,no power adders car at Norwalk 1.35 w/29.5x10.5x15 6.42 @ 109 10.09 @ 133 |
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