Series II/III transplant in '87 ? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 09-13-2006, 12:18 AM   #1
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Default Series II/III transplant in '87 ?

I've been off list for awhile. Does anyone know if someone has successfully transplanted a GM 3800 Series II or III into an '87 Bonneville? If so, can you point me to the info (if on this list) or a website?

Thanks in advance.
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Old 09-13-2006, 12:32 AM   #2
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Search for Frankenbonne. It was done in a '90. The body type is the same, however since you will have the LG3 3.8 rather then the LN3 3800 a bunch of stuff will likely be different. It'* completely possible, but you will have to do alot of the guess work (especially electrical) yourself.

Alot of members here will be able to help figure stuff out as well
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Old 09-13-2006, 11:55 PM   #3
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Thanks for the info. I'll search as you suggested. Aside from the electrical adventures, are there any structural/mounting mods required, or is it pretty much a direct fit ?
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Old 09-14-2006, 12:14 AM   #4
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Quote:
Originally Posted by rocketman
Thanks for the info. I'll search as you suggested. Aside from the electrical adventures, are there any structural/mounting mods required, or is it pretty much a direct fit ?
if i remember right, frankenbonne had provisions for the torque axis mount on the newer series 2 motor, but im not sure that your 87 has them.


just a fyi the subframe bolts are a bitch after all these years, and will like to break loose and spin freely in the body, which is one hell of a headache. i just did a subframe drop on my car, trust me its not fun.
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