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#1
07-08-2026, 12:08 PM
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Slotted chome valve cover braces-brand?
I have some older chrome valve cover braces they were slotted 5/16 so they could sit flush. The Summit and Moroso I just got are not and do not fit the recess on the chrome repop valve covers. The hole needs to be slotted to move them out vs just grinding on the outside radius. Anyone have a brand?
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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 [email protected] 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs 1964 Corvette Coupe 327 4 speed |
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#2
07-10-2026, 02:16 AM
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Are you talking about the Corvair-style load spreaders? Chevy small-block guys used them, and when they got popular, companies started stamping them to fit BBC and other engine families.
Sort-of like these: 
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#3
07-10-2026, 05:39 AM
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I picked up a set from a guy on eBay that fabricates them. Not cheap, but I'd rather pay more for something made here by American hands. Im not disappointed.
https://ebay.io/m/IahyTk |
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#4
07-10-2026, 09:02 AM
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Quote:
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#5
07-10-2026, 12:12 PM
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Quote:
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#6
07-10-2026, 12:21 PM
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Yes those type but as you look at the picture it is a round hole. On the Pontiac valve covers the radius around the bolt recess in the valve cover will not allow it to actually be on the flat surface of the valve cover unless it is slotted. Even grinding the outer portion the radius doe not fit. Not sure what brand I got that is slotted so the whole thing slides out some
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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 [email protected] 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs 1964 Corvette Coupe 327 4 speed |
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#7
07-10-2026, 01:03 PM
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I guess your talking about using such on original Pontiac valve covers because I have used the type as in the photo on Moroso steel covers and cast aluminum covers.
If I recall right both the spreaders and the cast aluminum covers were made by Cal Custom, although I am sure Mr Gasket offered the spreaders also. I don’t know if that company is still around, but once again if I recall right the cast covers I got thru good old J.C Whitney.
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#8
07-10-2026, 01:53 PM
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I use those on the chrome valve covers I have, they look original and the spreaders fit fine.
George
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"...out to my ol'55, I pulled away slowly, feeling so holy, god knows i was feeling alive"....written by Tom Wait from the Eagles' Live From The Forum |
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#9
07-10-2026, 02:48 PM
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Have several skinpacked cards of Moroso BBC chrome spreaders from the late 70's/Green Light Auto cleanout.
Believe the radius is bigger on them than the stamping on Pontiac stamped covers.
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Buzzards gotta eat... same as worms. |
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#10
07-10-2026, 03:44 PM
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Back in the early 70s I bought GM corvair clamps drilled to fit stock steel covers
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#11
07-10-2026, 05:32 PM
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I can use a small 5/16 end mill in my drill press and make a slot but be easier to find the ones I used on the 455 I just dynoed.
__________________
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 [email protected] 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs 1964 Corvette Coupe 327 4 speed |
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#12
07-10-2026, 05:46 PM
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Trans dapt makes them as does Moroso.
Trans dapt part number 9641
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65 GTO, Tiger Gold, Nostalgia Super Stock 421, 2-Carter AFB carbs, Stock Suspension, 3550lbs Full Exhaust-- 9.70's@135 66 GTO (Retired race car) 421 CID Multiple NSCA/NMCA World Champion 66 GTO 389 3x2, 4 speed, 3.90 gear, Montero Red 33K original Miles 67 GTO 2dr Post, 428, Tri Power, 3.55 Gears 80 Trans Am Black SE Y84 W72 WS6 |
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#13
07-10-2026, 06:38 PM
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I think those are the ones I have. I'll shoot a picture of the slotted one.
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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 [email protected] 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs 1964 Corvette Coupe 327 4 speed |
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#14
07-11-2026, 12:15 PM
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Comparison pics
__________________
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 [email protected] 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs 1964 Corvette Coupe 327 4 speed |
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