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12-10-2016
no, some of us are part of some facebook 3800 clubs, but I think you will find we come here to keep the idiocy to a minimum. Triple Edge Performance has a facebook page, and that is where I read about their rock crawler version of the 4T65.
https://www.facebook.com/TripleEdgePerformance/?fref=ts
12-10-2016
LOL! I can understand that.
12-10-2016
How many points of contact does the trans and engine have on the lower side of the car? Not including the dog bones on top... Will it be the same as the S/C 3800 and the 4t65e?
12-10-2016
the LS4 cars have a differential to subframe Mount based on the old one they used with the 3.4 liter twin dual cam V-6 in the first gen w bodies
12-10-2016
So, the only contact points are on the trans except for the dog bones up top. Am I understanding that right? The only reason I'm asking is I can get an S/C 3800 with trans, PCM and harness for a few hundred bucks. Came out of a '00 Regal GS. Was going to use it as mock up for an engine mount. I will not use it if anything is different. For obvious reasons...
12-10-2016
There is also this facebook page, which might be the most active
https://www.facebook.com/groups/2207224160/
12-10-2016
They have a motor and transmission mount, that extra diff to subframe mount and the 1 dog bone mount if I am counting correctly.
12-11-2016
I will need to copy the set up on the K-member for the mounts in the sand car. Or, do the V8 cars even have a K-member? Sorry but, I have not looked under a GXP...
12-12-2016
Not sure if I asked but, does the GXP and GTP have the same trans? If so, I'm going to build a trans for a spare... It's coming from a '00 Regal GS...
12-12-2016
w bodys have a sub frame up front that the engine and tranny mounts are bolted to. the v8 have different mount locations, but still use the sub frame.
12-12-2016
They use the same gear ratio but the GXP trans does have a different case, the valve body and electronics are going to specific to the 2004+ transmissions. I believe people have used the regular gtp's cases but the other odds and ends would have to be bought to make it work.
12-12-2016
Ok. I'll end up going with 369 gear ratio sprockets and chain. Needing the extra torque to help in the sand
12-14-2016
I had 3.69's in mine; loved them.Originally Posted by tonka329
If you talk to Dave, make sure you get the correct tables for the gearing. Mucho importantetete.
12-14-2016
Do you notice a diffference with the 3:69's?
12-15-2016
Sold the car; however the built trans and the 3.69's was hands down the best money I put into that car. The drawn out stock gearing kills the LS4, and the 3.69's really woke it up. Loved them. Only lost an mpg or two as well @ cruising speeds.
Along with a tune and exhaust, the car made damn near 300 horse to the tire...which is apparently pretty stout for a stock intake mani/exhaust mani car...with a totally stock valvetrain too.
12-18-2016
Sounds good. Hopefully the trans will be ok with pushing less than half the weight off a car. However, with 31" paddle tires, the 3:69's will help
12-18-2016
you planning on a built tranny? cause 31's will kill a stock one. you might want the lower gears for them tires too. all reference here is with street tires.
12-18-2016
The vehicle is half the weight, the tire size isn't as big of the deal.
The sand cars don't have the mass to push around so the minor upgrade in tire size still isn't a ton of stress added to the drivetrain.
12-18-2016
minor upgrade???? OK. its a 5 inch taller tire much wider, and spinning all the time with paddles right?????? cause whos ever seen a sand rail not spinning the tires wot all the time. normal driving around even on the sand is not the norm from what i see on vids of these guys tearing it up.
12-18-2016
Send is a far more elastic and ductile medium to move around vs. Concrete or asphalt.
With sand you're throwing the weight of sand rearward to accelerate the weight of the car forwards. Far far less chance of shock loading and damaging stuff.
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