stock trans
why would i use a different trans?
it has a 4l60e
it has different rear end gears already
Do yourself a favor and go ahead and order a HD rebuild kit with the updated sun gear shell/cage.
You'll know you need it when you suddenly have no overdrive and reverse.
The 4L60E can be a good tranny once it has been rebuilt correctly.
+1 I rock a LT1 Caprice Wagon as a tow car, the cage is cheap cast shit. Had 2 Lt1 wagons, both of them replaced due to failure. I think the guy swapped in Truck parts.
They tend to shift a little bit mushy too, but otherwise over 500,000 miles between 2 Lt1's and never an issue.
As for LT4's making 400Hp? Maybe with some mods, not stock... sorry if I am late to the party on this one.
Lt1's..
Caprice and Impala SS , iron head 2 Bolt 260hp 9caprice is actually less due to crank driven fan) Iron heads outflow the alum ones.
F-bodies are alum heads 285Hp
Vettes (Lt1) are 300hp and have 4 bolt mains
LT4's standard on 6spd Collectors editions (auto's had Lt1's) and standard on Grandsports... Had different Intake and heads (not sure if the cam was the same thou) 330Hp.
throw away the opti spark or vent yours.
If you need any LT1 parts holla, I have 2 sitting in the garage and an Lt4 still in the crate
They are my old mans...but I can pretend to be baller.
PS swap the cam , you aren't at 400hp with that setup.. not trying to argue or compare E-Dicks.. I think you are 375ish ... Cam would really make that Bitch come alive.
other then that...nice setup.