91 Se, Engine swap to a L67 - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 04-11-2006, 11:19 PM   #11
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It'* all OBDII.



This is the connector installed on the passenger'* side. The original was left in place and in tact in order to read ABS and climate control codes.
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Old 04-11-2006, 11:39 PM   #12
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I forgot to add that since the strut tower braces are a direct fit, the hub distance was the same. I wouldn't think that the geometry of the struts and control arms were any different. The only problem I had is that the left caliper (from the 97 donor) rubbed the inside of the original 90 wheel which is 1/2" narrower in width than the original 97. I grinded the caliper a bit to stop the rubbing but intend on switching wheels in the near future in order to correct a speedometer error.
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Old 04-11-2006, 11:51 PM   #13
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GTPboy, the 87-91 frame and subframe are nearly identical to the 92-99. They're both H bodies.
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Old 04-12-2006, 10:38 PM   #14
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Quote:
GTPboy, the 87-91 frame and subframe are nearly identical to the 92-99. They're both H bodies.
I dont understand the point???? We do mainly W-bodies, and there can be enough difference to pop a diff.. But they are nearly identical, as the engine/tranny bolt right in ect..

I am glad that everything is "close enough" to work in an H-body w/o having any long term issues. That is good info! But when/if we ever have a Bonne come to us, we will have to do our own testing, and when/if that ever happens, all info will be on our website and L67swap.com. Just gotta get a Bonne, and I'm actually workin on it, but it doesnt look good.

When the car looks good, people want to much money, an the cheap ones....well their cheap for a reason
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Old 04-12-2006, 10:50 PM   #15
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Quote:
Originally Posted by GTPboy
Quote:
GTPboy, the 87-91 frame and subframe are nearly identical to the 92-99. They're both H bodies.
I dont understand the point???? We do mainly W-bodies, and there can be enough difference to pop a diff.. But they are nearly identical, as the engine/tranny bolt right in ect..

I am glad that everything is "close enough" to work in an H-body w/o having any long term issues. That is good info! But when/if we ever have a Bonne come to us, we will have to do our own testing, and when/if that ever happens, all info will be on our website and L67swap.com. :
uhh the point is you are making your claims about the W body which we really dont care about on this forum.....it has been said before....the subframe dimensions are EXACTLY the same on the H........ they are not "close enough" they are exact to the millimeter.....take a look in the FSM'* it clearly spells it out there. no testing needs to be done

sorry to be *** about this but just read the info that was posted in this thread already, and a little reasearch on the forum if your serious about this
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Old 04-13-2006, 12:02 AM   #16
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Um the W Bodies are ok By me....

But the dimensions of the older H body and the 92-99 H bodies are the same... Its supprising the parts I could swap from my 95 to either of the 91'*.. The 2000+ H bodies were totally redesigned with a lot of their components resembling the G body

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Old 04-13-2006, 09:14 AM   #17
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Finally spelled out! Someone finally said they are EXACT, not nearly identical.

Nearly identical means (to me), that issues could arise

Exact means-EXACT.

And I dont feel anyone has been and A** so to say in this thread, I was trying to get my point out, and I hope you all understand were I was coming from. And I am extremely happy that a defineate answer came out in the end. I have little to no knowledge of the Bonne setup. So that means I need exact info back from you guys

-Jeremiah
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Old 04-13-2006, 09:16 AM   #18
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When we say NEARLY identical, we say it because fenders and doors are not compatible. The frame is exactly the same. Engine mounting differes slightly in 87 IIRC, but later mounts should weld right up.
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Old 04-13-2006, 10:24 AM   #19
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Quote:
Originally Posted by GTPboy
Finally spelled out! Someone finally said they are EXACT, not nearly identical.

Nearly identical means (to me), that issues could arise

Exact means-EXACT.

And I dont feel anyone has been and A** so to say in this thread, I was trying to get my point out, and I hope you all understand were I was coming from. And I am extremely happy that a defineate answer came out in the end. I have little to no knowledge of the Bonne setup. So that means I need exact info back from you guys

-Jeremiah
Thats understood...

Its taken us a long while but we have found that the 87-91 and 92-99 H Bodies share a lot in common.. There were some subframe changes for the variation in engine mounts.. But all of the subfram isolator locations are the same... I was tickled pink when Randy wanted the info for the series II swap into his 90 SSE bonneville... And even more tickeld when the dimensions between the 2 service manulas were the same... There were some changes with the CV axles as 93 & later used the larger more Heavy Duty axles... Larger brakes.. And still had the proper bolt holes on the 90 for the torque axis mount, everything bolted right up... I believe he even used the 97 AC System, 97 Maxifuse Relay center...

I'll have to shoot some pics one of these days... The engine compartment between mt 91'* and the 95 are about identical with a few minor exceptions...

On the same note I'm sure that the C Body has the same underpinnings and the same swap coule be done to it as well

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