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Ideas on next round of mods. What you think?

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Old Feb 26, 2006 | 01:37 AM
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Default Ideas on next round of mods. What you think?

Im probably going to stay w/ my GT76R/348ci motor but going swap to a th-400 auto. Goals are consistant mid-low9s@150mph+ while still being able to drive around some on the street w/o much trouble.
My questions are:Is my current turbo sufficent? Should I go BS3?? Which turbo cam would work best for my goals while being street drivable, which verter, should i upgrade to the new ET Performance heads(which seem badass) over my TEA 2s and if so which ones--The ET 225cc, 245cc, 255cc etc etc??? Also, would the 90/90 setup be worth it over my current LSX78/75mm MTI tb on a stock cube motor?( i figure yes with that much air going through but i dunno for sure)
Im not gonna worry bout rwhp/rwtq numbers so much as i just want low-mid
9s@150mph or better consistantly w/ decent street manners
Any opinions or suggestions would be most appreciated!!!
thanks Guys/Gals
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Old Feb 26, 2006 | 09:55 AM
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well first thing i would do is to put the T400 on it, then run it, i think you have enough power, if not you might try upgrading to BS3, if you cant squeeze anymore out of your PCM. if that doesnt do it (that turbo has done 900hp right) then youll have to go for a bigger turbo. But i think you can do it just with the tranny swap, maybe some weight removal.
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Old Feb 26, 2006 | 01:09 PM
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why not 4l80e
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Old Feb 26, 2006 | 02:11 PM
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suppose of all the above mentioned i just do th-400, wont i need a different cam? Im running a 225/225 .581 113lsa right now. Which cam would be better for the auto?
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Old Feb 26, 2006 | 05:09 PM
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no one else w/ any thoughts on which cam/stall for the t400 or the ET heads?? As stated before i want at least mid-low 9s but if those heads & that 90/90 setup would make a huge difference over my tea's 78/75mm setup then i'd get them. i realize some of the ?s my be getting old & boring & ive done some searching but havent really found the info im searching for so
Im just wanting as much input from all the experts/enthusists on here as i can get as well as think everything out throughly before making my final decision & getting the ball rolling on this project in the Fall hopefully
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Old Feb 26, 2006 | 05:51 PM
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why not see what it can do now then decide. with the power you have now you have plenty for 9's. Are you hooking? Work on suspension and chassis, then when that is all dialed in look for more power.

a 4l80e will be heavier but you'll have overdrive. you probably only need a 3500 or so stall.
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Old Feb 26, 2006 | 07:28 PM
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Originally Posted by Got Me SOM
why not see what it can do now then decide. with the power you have now you have plenty for 9's. Are you hooking? Work on suspension and chassis, then when that is all dialed in look for more power.

a 4l80e will be heavier but you'll have overdrive. you probably only need a 3500 or so stall.
suspension and chassis are pretty much done but truth is i havent had a chance to run it as is yet due to health probs (back) so i just started thinking i would just skip the 6sp route (since i think it'd be to hard to get consistant 9s if any at all outta it) and go straight to the t400 but i guess ur right. I'll just see what she can do as is when i get a chance and then upgrade to the other stuff
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Old Feb 26, 2006 | 09:30 PM
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You can always make a few MPH passes at the track, I'm sure the car won't hook on anything less than a 28x10.5 slick.

If you make changes, I'd do the T400 and a good converter and go from there. That cam is good enough for now.
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Old Feb 27, 2006 | 01:02 AM
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good idea John. i'll probably make some passes on my ET DRs just easing out. Seem to hook pretty good on the street but i havent tried a full launch on them.
BTW, i thought i would need a lil bigger turbo cam w/ the auto to build boost faster or that not true??
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Old Feb 27, 2006 | 08:08 AM
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You'll build better boost with the automatic and the cam you have. With 850rwhp all you need is a Rossler t400 and a great converter. Call Marty Chance at Neal Chance or Jack at Vigilante and buy a killer converter. Forget other heads, cam, intake etc....won't need it at 16psi.
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Old Feb 27, 2006 | 08:20 AM
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ok thanks. guess i had that backwards, i was thinking they put smaller cams in 6spds to keep the boost from building to fast and went bigger in autos. So basically all i need for my goals is to go t400 w/ a badass verter and im set??
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Old Feb 27, 2006 | 08:26 AM
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As long as you can hook all that POHWAH, you're set.
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Old Feb 27, 2006 | 08:30 AM
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Cool, thanks a bunch man. So i guess if 8's become the next goal down the line then all the other upgrades i.e. heads/intake/BS3/cam would need to made huh?
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Old Feb 27, 2006 | 08:40 AM
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get 10's first then work your way down.
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Old Feb 27, 2006 | 09:19 AM
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Originally Posted by Got Me SOM
get 10's first then work your way down.
You need to practice what you preach.


....... Oh yeah and get back to work beotch.
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Old Feb 27, 2006 | 09:32 AM
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Originally Posted by Caveman
You need to practice what you preach.


....... Oh yeah and get back to work beotch.
LOL!!! Hey, do yall see Andy (Armageddon on the tech board) down there at all. Think he goes to school in Orlando
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Old Feb 27, 2006 | 09:52 AM
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Originally Posted by Wicked_Hugger99
LOL!!! Hey, do yall see Andy (Armageddon on the tech board) down there at all. Think he goes to school in Orlando
He posted on here in the FL section a good # of times when he was moving here but I haven`t seen him post lately. I had looked forward to seeing him at the dragstrip or car hangouts but apparently hes been real busy or something or sold the Fbody for an EVO.
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Old Feb 27, 2006 | 12:21 PM
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Wicked might not have even run 11's in that car yet. Talking about changing cams and heads should be deferred until you run some real numbers in that car. It took me two years to run 9.4@143mph, though admittedly I only went to the track a handful of times. I would not change the cam until you max the car out or something.
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Old Feb 27, 2006 | 11:33 PM
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PSJ, ur right, I havent had any actual 1/4 passes in this car since it was bolt-on only. im not gonna change the cam. I just thought I needed to if swappin to a t400 for boost reasons but guess I dont have to. Iwas just just getting ahead of myself, and so im probably going to just do the t400/verter and then max out the combo I currently have ET/Trap wise
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