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What rear end should I choose??


utvolman99

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There are just too many choices to make for this swap! I live close to the Z-Barn and will probably be getting my r200 from them. I need to decide between the 3.5, 3.7 and the 3.9.

I will be running a 96-98 Vortec roller motor with a carb and dual plane intake. I will be leaving the motor stock at first at least the first couple of months because of the salvage yard warrantee and because its very expensive to modify. I think right now Im leaning towards the 3.7??

Someone give me some insight, Im killing myself here! bonk.gif

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Guest kc6wfs

Not sure what the last gear on a T5 is.

3.7 ya can't go wrong and there are lots of them out there, and it's better than the 3:54.

Im looking for a 3.9 LSD R200 complete.

 

Hope to find it soon.

 

Saw your post on Sallee web site. Thats a good Cam. But i probably would go with compcams(?) springs and retainers. Probably not a good idea to mix/match cams/springs/retainers. Who ever ya buy the cam from get there stuff.

 

I am going to go with the XR270HR also.

400HP would be fun!!!!!!!

 

Dave

cheers.gif

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Guest 400 ci 280z

i am wondering the same thing. i have a pont. 400 and will most likly use the t-56. i have a 3.54 open right now but am thinking about lsd. anyone have sugestions? puke.gif i just felt like adding that because these new graemlins are pretty cool

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Pontiac engines like 3.25-3.50 rearends because of cast rods and small exhaustports. Rpm limit is 5200-5500 rpm rpm = ( mph x 336 x (rearend x transmission)/tire size

example 5200 rpm in 4th with 26" tires and 3.54 rear = 5200 x 26 / ( 336 x (3.54 x 1))= 114 mph.

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