HELP!! ON BIG BLOCK MOTOR MOUNTS?? - Team Camaro Tech
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post #1 of 12 (permalink) Old Apr 6th, 00, 12:35 PM Thread Starter
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Chris
 
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I'm going from a SB to a BB (454) in my 69 camaro. As some of you might of noticed. I need to know if I can use, or need a new frame bracket for the Big Block motor mounts, you know what the motor mounts sit on.

Any help would be appreciated, Thanks!

One other thing is, I have motor mounts from
NAPA, for a 454 from a 70 camaro. Motor mounts are motor mounts right. They are the same for all 454's and should not matter what year my car is; which is a 69 camaro.
This is what I'm hopeing. Yet, I am not sure!
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post #2 of 12 (permalink) Old Apr 6th, 00, 12:57 PM
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The 69 frame mounts are in a design all their own. I've heard you can take 67/68 frame mounts and use them on a 69, but then you must also use the 67/68 engine mounts. The same goes for the reverse.

If you mix-match 67/68 engine mounts with 69 frame mounts or vice-versa, you will have fit problems.

I can't answer about the 70 on up mounts, I've never dealt with any of the second gen cars and swapping engines.

You might do a search and look back at some previous posts under engine & drivetrain. This topic has been answered before.

Good Luck



------------------
67 Camaro LS6 454/TH400/12bolt 3.73
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post #3 of 12 (permalink) Old Apr 6th, 00, 05:55 PM
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Procharged, I'm not real sure about 69's, but 67 & 68's do use a shorter frame mount than small blocks. I'm sure It's for clearance reasons. I also have a 72 RS, and the motor mounts are alot different than the 67's. Hope this helps.
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post #4 of 12 (permalink) Old Apr 6th, 00, 07:40 PM
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Charley
 
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GM part #'s 03980941 and 03980942 should work. I believe they are 67-8 but can't remember. Still available last time i bought some a few months ago.
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post #5 of 12 (permalink) Old Apr 7th, 00, 03:03 AM
 
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One of the 67-68 mounts is no longer availabe. I don't remeber which number it is though. I have spent the last two weeks hunting them and was unsuccessfull. I tried all the usual sources and every one had one but GM has discountinued the other. In fact a rep from one company told 'we don't have them and good luck finding any". I finally found a company that is custom making me one by taking two new small block ones and putting them together. $$$$ Hope this saves someone some time.

[This message has been edited by JamesK (edited 04-07-2000).]
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post #6 of 12 (permalink) Old Apr 7th, 00, 05:01 AM
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Classic Industries has both the 67-8 and the 69 big block mounts listed in their Catalog. May be worth a call.
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post #7 of 12 (permalink) Old Apr 8th, 00, 01:15 AM
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JamesK,

You might want to try Patti over at firewheelclassics.com . I know she had both sets of motor mounts for the 67-68 at one time (recently).
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post #8 of 12 (permalink) Old Apr 8th, 00, 03:41 AM
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Good call, try Firewheelclassics, they are close to you, and they have most of their stock onhand. It's off of Highway 190 in Garland, they've got a real nice business over there, I recommend them highly! KZ
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post #9 of 12 (permalink) Old Apr 9th, 00, 07:34 AM
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I once had a big block 69 (on small block frame mounts) i know the big block mounts have a lower profile, but i was able to fit the valve cover under the booster by knocking a dent in the rear of the v/c. For engine mounts, I used MOROSO solid motor mounts. good vibrations
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post #10 of 12 (permalink) Old Apr 10th, 00, 04:42 AM
 
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I just got off the phone with firewheel classics and got the same story. One side has been discountinued by GM and there is no one planning to offer a reproduction. You can find them listed in everyone's catalog but they don't have them. The company making me one is supposed to have it to me by next week and I will post the outcome.
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post #11 of 12 (permalink) Old Apr 10th, 00, 09:46 AM
 
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I performed the same change last year in a 69 Camaro. Initially the camaro had a home built 302. I dropped the 454 in on the same frame mounts and used the engine motor mounts from the 302. All will work ok, I had no clearance problems even with tall valve covers for roller rockers. BBC frame mounts would even help more since they are lower profile.
The car was a manual steer/brake car.

I also did this swap to a 67 RS I used to have and did have clearance problems with the wiper motor. I couldn't use tall valve covers on it with removing the motor.
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post #12 of 12 (permalink) Old Apr 11th, 00, 08:24 AM
 
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You will feel a big difference when you mount a 454 bb right on the frame without the rubber spaces.
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