just got my 91 camaro running with a TC-78.


still tuning and stuff,
AFR is very good under boost, still needs some leaning out at part throttle
CSU blow thru by the way....

stock bottom end seems to be holding up to 10psi pretty good so far.
A2A intercooler and 93 octane....


dont know anynumbers yet. but it breaks the tires loose with 2.73's at 40mph

 

air fuel is about 11.5/11.7:1 under boost at WOT, still pretty rich, around 10:1 at part throttle,
timing is locked out at 34* and msd BTM box is retarding 1* per PSI.

will be hopefully posting pics and possibly video this weekend.




TC78
JGS 50mm WG
JGS 56mm BOV
12x24x4" A2A
Comp cams turbo cam, hyd. flat tappet
msd pro billet,
msd 6AL BTM
Aeromotive A1000 fuel system
CSU 750
Vic Jr.
innovative wideband
electric water pump
aluminum radiator
electric fan,
etc, etc......

on a stock .030" over 350........lol
oh yea TH350 w/ 3600ish art carr converter

 

Interesting.. I will be watching this one as I have a lot to learn!! LOL

 

I wouldn't rely completely on the wideband. Check all the plugs after a wot burn. One lean cylinder will ruin it. I think I'd keep it that rich on wot too. I don't think you have too much power to gain there by leaning it out, considering its stock parts.

Looking forward to numbers, pics, and how long it lasts!

 

yea, i am gonna try to borrow a camera and get pics this weekend...

i think ive gotta go down a jet size or two in the primaries because when i am at part throttle just cruising or lightly accelerating its rich, like high 9's low 10:1's according to the LM1.

ive been through 3 sets of plugs so far, the first fouled pretty quick.. then i jetted it and the second set looked perfect except for one that was still black, which i am blaming on a plug wire, i tested a wire that i suspected to be "good" and it was around 70 ohms of resistance, and the one that i thought was "bad" had 285-290ohms of resistance, i changed that plug wire and all 8 plugs and everything seems to be good. burning clean, but no signs of detonation or anything.

waiting for some decent weather to get it out and do some more tuning/driving...been raingy for a few days.

hoping to make a dyno appointment sometime in the next couple weeks, maybe with some race gas and a few more pounds of boost.

 

What comp. cam "turbo" cam did you go with? They make a couple of them. Is it the 115* LSA version? Who makes that TC-78? I am guess it is a 78mm inducer old tech T-series comp. wheel. Is it a T4 or T6 frame unit?

 

i wanna see some pics, im doin a single turbo s475 with teh jgs stuff and csu as well...how did you do the headers and stuff...ive heard some bad stuff bout the lm1...how do you like it....snap some pics man...how you like the carb...

 

the cam is small, .447"/.444" lift, i believe 212* and its 112* lsa, when i talked to Comp, and told them what i needed, they reccommended the middle of three cams.
i plan on going to a solid roller when i buil a "stout" shortblock, and put on my AFR 195cc's (18-22psi, hopefully 700-750 crank hp)

the turbo is by turbonetics, its a .96A/R T4 frame,
78mm inducer, just a little more compact physical size then the "older" T-series

im still up in the air about the LM1, for the most part i believe its giving accurrate readings, but every now and then i get lean readings for a split second, and everything else is showing to be fine, (plugs etc...)
i have it wired directly to the battery, so voltage shouldnt be a concern.... i am not sure tho, its still very new to me.

i am going to try to get some pics and a quick video this weekend, im working 12hr days this week, and its been pouring rain for the last few days here, i will get to it asap.

nothing but good things to say about the carb. its been awesome.
throttle response was better then i ever expected.
Kevin @ CSU has been a huge help too, answered every question ive had so far.

 

i believe the advertised name of the cam was the XT256... i think.
256* adv. duration......

 

get some pics dude, and who did the headers and the crossover pipe...

 

i have some pics, but im having trouble posting them, i guess because of file size.... is it possible that i can email them to someone and have them post them for me??

 

post them on photobucket.com and make a link

 

http://s482.photobucket.com/albums/rr187/kburch5647/

the car is dirty, and the setup isnt perfect, all i know is it hauls pretty good....
im gonna change my hotside setup to accommadate accessories, like power steering and evac.

 

Looks real nice.