Where can I get this bracket?
Team Owner
Joined: Sep 2006
Posts: 31,235
Likes: 4,325
From: Westminster Maryland
Hi t,
I'm not sure which sb 70 engine had a cast iron intake and a Holley.
Is this an engine with some 'other' parts installed on it?
Perhaps part of the problem is the linkage on the carb not being suitable for use with a stock bracket.
Regards,
Alan
I'm not sure which sb 70 engine had a cast iron intake and a Holley.
Is this an engine with some 'other' parts installed on it?
Perhaps part of the problem is the linkage on the carb not being suitable for use with a stock bracket.
Regards,
Alan
Le Mans Master
Joined: Oct 2006
Posts: 7,123
Likes: 433
From: Gladstone MO
C3 of Year Finalist (appearance mods) 2019
That same bracket on my 69 was on the original tri-power, then a host of Holley and Demon carbs. And that's not even counting the 2x4bbl Edelbrocks. Worked everytime.
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Race Director
Joined: Oct 2000
Posts: 12,667
Likes: 3,122
From: Shamong, NJ
"CTH" is the late 70 suffix code for the L46 350/350. This engine originally came with a cast iron intake, and a Q-Jet carb.
The Holley accelerator cable bracket was designed to be used with the production Holley carbs, on aluminum intake of the LT-1 (among others).
I think your problem is more than just the Holley carb. The adapter may be causing part of your problem, because of how it places the carb in relation to the intake and the cable. It's hard to tell from the picture, but it looks like you have the wrong cable also. All 1970 Corvette engines used the same accelerator cable, that attached to the carb, by snapping onto the ball on the carb linkage. In your picture, it looks like the cable on your car, is slotted on the end that attaches to the carb linkage. If you look at the picture that Alan posted, the end of your cable, should look just like his, and attach the same way. If you do have the wrong cable, this could be contributing to your problem with the bracket too.
Holley made a direct replacement "Spread-Bore" carb, to use on the Q-Jet intake, and from what I've seen, those carbs work with the Q-Jet bracket. The Holley Spread-Bore mounted directly to the stock Q-Jet intake, without the need for an adapter.
The Holley accelerator cable bracket was designed to be used with the production Holley carbs, on aluminum intake of the LT-1 (among others).
I think your problem is more than just the Holley carb. The adapter may be causing part of your problem, because of how it places the carb in relation to the intake and the cable. It's hard to tell from the picture, but it looks like you have the wrong cable also. All 1970 Corvette engines used the same accelerator cable, that attached to the carb, by snapping onto the ball on the carb linkage. In your picture, it looks like the cable on your car, is slotted on the end that attaches to the carb linkage. If you look at the picture that Alan posted, the end of your cable, should look just like his, and attach the same way. If you do have the wrong cable, this could be contributing to your problem with the bracket too.
Holley made a direct replacement "Spread-Bore" carb, to use on the Q-Jet intake, and from what I've seen, those carbs work with the Q-Jet bracket. The Holley Spread-Bore mounted directly to the stock Q-Jet intake, without the need for an adapter.
Melting Slicks
Joined: Oct 2013
Posts: 2,569
Likes: 126
From: San Diego California
"CTH" is the late 70 suffix code for the L46 350/350. This engine originally came with a cast iron intake, and a Q-Jet carb.
The Holley accelerator cable bracket was designed to be used with the production Holley carbs, on aluminum intake of the LT-1 (among others).
I think your problem is more than just the Holley carb. The adapter may be causing part of your problem, because of how it places the carb in relation to the intake and the cable. It's hard to tell from the picture, but it looks like you have the wrong cable also. All 1970 Corvette engines used the same accelerator cable, that attached to the carb, by snapping onto the ball on the carb linkage. In your picture, it looks like the cable on your car, is slotted on the end that attaches to the carb linkage. If you look at the picture that Alan posted, the end of your cable, should look just like his, and attach the same way. If you do have the wrong cable, this could be contributing to your problem with the bracket too.
Holley made a direct replacement "Spread-Bore" carb, to use on the Q-Jet intake, and from what I've seen, those carbs work with the Q-Jet bracket. The Holley Spread-Bore mounted directly to the stock Q-Jet intake, without the need for an adapter.
The Holley accelerator cable bracket was designed to be used with the production Holley carbs, on aluminum intake of the LT-1 (among others).
I think your problem is more than just the Holley carb. The adapter may be causing part of your problem, because of how it places the carb in relation to the intake and the cable. It's hard to tell from the picture, but it looks like you have the wrong cable also. All 1970 Corvette engines used the same accelerator cable, that attached to the carb, by snapping onto the ball on the carb linkage. In your picture, it looks like the cable on your car, is slotted on the end that attaches to the carb linkage. If you look at the picture that Alan posted, the end of your cable, should look just like his, and attach the same way. If you do have the wrong cable, this could be contributing to your problem with the bracket too.
Holley made a direct replacement "Spread-Bore" carb, to use on the Q-Jet intake, and from what I've seen, those carbs work with the Q-Jet bracket. The Holley Spread-Bore mounted directly to the stock Q-Jet intake, without the need for an adapter.
Circled is the Part Number (3992386), but underlined is the name of the Edelbrock non-stock manifold (PERFORMER).
Some of the brackets available are shown at the bottom of the page here.
http://www.gmpartswiki.com/getpage?pageid=93511
Race Director
Joined: Oct 2000
Posts: 12,667
Likes: 3,122
From: Shamong, NJ
Afraid I muddy'd the water here myself.
Circled is the Part Number (3992386), but underlined is the name of the Edelbrock non-stock manifold (PERFORMER).
Some of the brackets available are shown at the bottom of the page here.
http://www.gmpartswiki.com/getpage?pageid=93511
Circled is the Part Number (3992386), but underlined is the name of the Edelbrock non-stock manifold (PERFORMER).
Some of the brackets available are shown at the bottom of the page here.
http://www.gmpartswiki.com/getpage?pageid=93511
The bracket for the Holley was part number 3972627, and was only used with the Holley carb on 68-69 L-88's, 70-72 LT-1's and 71 LS-6's. The Holley's on 68-69 3x2 427's, used a completely different bracket (3921613), that was "V" shaped and bolted to both mounting studs on the left side of the rear 2bbl carb.
Mid-years used an accelerator rod, instead of a cable, so they didn't need a bracket.
None of the brackets, are available from GM anymore, but all of them are being repro-ed. The list price for the Holley and Q-Jet brackets, when they were discontinued about 6-7 years ago, was around $42. At $29 each, the repro's not cheap, but it's a better deal then $42. I don't think the repro's have the part number stamped in them though.