Sbc to bbc conversion kit - Chevelle Tech
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post #1 of 7 (permalink) Old Sep 22nd, 13, 7:37 PM Thread Starter
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Dan
 
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Sbc to bbc conversion kit

These kits any good? I have the frame mounts still in my car but it had a sbc in it...just looking for what I need to get to drop the motor in when it's time...any tips on this kits or what others have done?
http://www.ss396.com/mm5/merchant.mv...ode=AMC-103KIT
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post #2 of 7 (permalink) Old Sep 22nd, 13, 8:07 PM
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Re: Sbc to bbc conversion kit

When I put the Rat in my 67 Malibu, all I did was set it right down on the existing perches in conjunction with regular big block motor mounts.

It was originally a 283 car with a powerglide.

'67 Chevelle Malibu, Catalina Blue, 540 inch Rat, Air Flow Reasearch 290 CNC Heads heads, Custom Hyd Roller, .675 lift, 234, 244 at .050, Lemons Headers, Holley Multiport Fuel Injection, TCI 6X 6Speed Automatic, 12 bolt Posi Eaton TruTrac, 3:31 Richmond Gears, front and rear power disc brakes, Global West Suspension, etc.

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post #3 of 7 (permalink) Old Sep 22nd, 13, 8:18 PM
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Re: Sbc to bbc conversion kit

what is actually different in a bb car mounts vs a sb car?

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post #4 of 7 (permalink) Old Sep 23rd, 13, 4:22 AM
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Marcus
 
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Re: Sbc to bbc conversion kit

Several threads about this, you can use both sb or BB frame mounts in a 64-67 doesnt matter as long as you use the matching motor mounts. BB frame mounts can take a interlocking motor mount that wont fit a sb frame mount.

Heres a thread with pics that shows the difference.
https://www.chevelles.com/forums/showthread.php?t=174732

Good luck with the BB install!

Marcus

Chevelle Malibu ss 64
489 BB with parts from Lewis racing
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post #5 of 7 (permalink) Old Sep 23rd, 13, 8:38 AM Thread Starter
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Dan
 
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Re: Sbc to bbc conversion kit

My sbc are still in place so if the big block still has the motor mounts on it im set?
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post #6 of 7 (permalink) Old Sep 23rd, 13, 1:04 PM
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Re: Sbc to bbc conversion kit

Or, if you use the Energy Suspension "short and wide" motor mounts, those will fit either frame mount and handle all the HP you want to throw at them for street cars. I have those in my 65/496, my buddies 66/502 and my Son's 68/454. All with the original SBC frame mounts. The official SBC frame mounts have an interference with the original interlocking BBC motor mounts hitting the frame mounts before the bolt hole aligns properly. FWIW, Ed

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post #7 of 7 (permalink) Old Sep 23rd, 13, 1:16 PM
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Re: Sbc to bbc conversion kit

Quote:
Originally Posted by 19chevelle66 View Post
My sbc are still in place so if the big block still has the motor mounts on it im set?
Use the mounts from the sb engine if the BB has 64-67 Chevelle BB mounts they are the interlocking style and wont fit the sb frame mounts. I like one solid moroso mount on driver side and oem rubber on passenger side if you have lots of hp.

Marcus

Chevelle Malibu ss 64
489 BB with parts from Lewis racing
Alumitech radiator with dual spals
Th 400 Edge 9.5" converter
57 3/4 wide 12 bolt: Eaton posi, Us gear 3.31, Toms KA 33 splines axles
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