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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 06-08-2003, 12:33 AM   #11
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When people swap L67'* into their 5 speed Fieros, they use the stock tranny most of the time. Usually the trannys don't last that long since they were originally designed for the Tech 4 and then GM didn't switch to a stronger tranny when the 2.8'* became available. You could use that tranny, but you may be getting it replaced a lot. I have heard a lot about the clutches slipping because they can't handle the power.
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Old 06-08-2003, 01:41 AM   #12
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So ya want a 5speed huh? DrJay is here with the love baby. Lemme quote a few web pages: *ahem*
What are common transmission swaps?
For a Buick V6 or other engine with B-O-P bolt pattern:

TH350
TH200R4 overdrive automatic
T5 manual
use B-O-P to Chevy bolt pattern adaptor (TCI part #230000) and use any SBC transmission

On a side note, B-O-P means Buick Olds Pontiac. So you can grab a t5 trans or any chevy trans with the adaptor and BOOM, get your *** a 5-speed. But your asking "How do I install it?!" Well I'll help a little there too, I found a link to doing it but its for a cougar. It will, however, give you the general idea on how to do it so you can get an idea on what it'll come to. http://www.coolcats.net/tech/advanced/t5conversion.html
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Old 06-08-2003, 01:42 AM   #13
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But then you got the whole front wheel drive thing....heh. Stand by for the fix..

Ok I was going somewhere with this but I lost the link. Anyway it boils down to there are fwd chevy trucks with 5 speeds out there that you may use for some R&D into bolting it to your car. Only thing is Bonnevilles were never offered in a 5speed so the fabrication would probably be beyond what most would look to do. A 5speed would be cool but the 4grand your going to spend on it could be put into the engine and you can come back with a beast of a car. Maybe look into the 5-6speed automatics that would probably be more "bolt on" friendly and still give you lots of snap. Any q'*?
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Old 06-09-2003, 03:04 AM   #14
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Check Techinfo, Tech Know-how, the performance rebuild Q/A article.

There are other ideas and options. Send me an email or PM if Doc'* article doesn't satisfy you!
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Old 06-09-2003, 03:22 AM   #15
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Manual trans would be cool, for a while. Let me tell you about my experience. I've swapped a 7004r into my old GP. It was a freaking hassle. Some of the problems were, shift points, which we could never seem to get just right. Speedo calibraiton was whacked despite trying several drive gears, and then there was the shifter. Even with a kit, it was never as good as original. I don't mean to be a ney sayer, but I'd simply advise you invest the money in beefing up the existing automatic, and use the gear shift to play when you want to. I'll never do anything like I did with that swap again. I'm not saying it can't be done. Just thinking its not worth it. The only thing it gave me was a higher top-end, and awesome highway mileage. I never thought a 455 would see 22 mpg - towing a bass boat.
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Old 06-11-2003, 03:06 AM   #16
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ya i kinda decided to just let it go i dont have the money and would rather not haslle with it being that the engine has so many miles and such... it would be cool but i just dont have the $$$ besides i'm lookin to save up for a 300ZX maybe and that'll do me just fine so ya, thanks everybody i'm really impressed with all the feedback i got
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Old 06-15-2003, 03:19 AM   #17
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You could get a tranny, and i bet a nicer clutch made more for performance would help a lot.
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