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Old 08-25-2015, 12:59 PM   #64
tinydb84
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Join Date: Jul 2009
Location: San Jose Ca
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Re: 75 GMC sierra classic face lift and conversion to short bed

Quote:
Originally Posted by sam in vista View Post

so right now im gonna separate my quastions
1- choose of engine
2- transmission (best choice)
3- rear end posi (wich ratio)
4- tourque converter (what stall)
5- exhaust system (prefer flowmaster)
1. I'd take a roller cam over any flat tappet cam. For that price you might be able to get a 383 (or go LSx).
2. For that power level a th350 should be fine.
3. If you are going with a th350 (or th400) then you probably want something near a 3.08 if you are going to be on the freeway for any amount of time. If you get a 700R4/4l60 then I would go 3.73. I have only had Detroit Lockers so I'm not much help there.
4. You should call/email the company and let them know what you have. It depends on engine, weight, cam, transmission, gears, and purpose.
5. I have ran a lot of different flowmasters over the years: 10, 40, 50 series. My daily driver is a 350Z with no mufflers. I love loud annoying cars but I think most people wouldn't like the noise level of the 10's. I am kinda over that particular sound though. Look on Youtube and play some exhaust clips of the various different brands. See what you like best.
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