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Swap done now the tuning is killing me

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Old Jan 7, 2007 | 04:00 PM
  #1  
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From: alabama
Car: 92 camaro rs
Engine: 350 tbi/416's/comp xe268
Transmission: 700r4
Axle/Gears: 3.42
Swap done now the tuning is killing me

ok I have 2 noticable problems but first let me do some explaining of the situation.
I swaped a 350 into my 92 RS 305 tbi, kept the tbi and switched out the 55# to 61# injectors, also I put a comp cam xe262 cam in her, 416 heads, edelbrock performer intake W/ adapter plate, I advanced base timing to approx 10 deg so shed run a little. I have adjusted my iac and idle rpms. ok now the 2 problems. 1st is y blms. I took the formula (old blmX128) X VE table value = new blm. when I did this It changed from being close to 128 up to normally the 133+ strange. 2nd problem is it does not seem like my converter wants to lock up. Not quite sure how it all works, but I thought it basically locked the 2 halves of the converter together in order to give you a 1:1, but it seems like when I hit the gas rpms slowly slowly rise then they shoot up but the ca doesnt really accel? hmm will post data log but here is my bin
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Old Jan 7, 2007 | 04:34 PM
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From: South Dakota
Car: 1990 Camaro RS
Engine: 305 TBI (LO3)
Transmission: T-5
Axle/Gears: 3.08
First, are you running stock fuel pump and pressure regulator? Second, the true equation to get your new VE value is ((BLM*INT)/16384)*Old VE = New VE. To have your equation work somewhat and not use the INT data, it would have to be BLM/128*VE Table Value. I happen to have that same problem and the settings for TCC logic is in depth, but there is a wonderful post and in particular it covers the stock ECM for your TBI motor. https://www.thirdgen.org/forums/diy-...ight=TCC+Logic

I just quickly glanced at the bin and it seems to be alright. Keyword "Seems". Basically in a nutshell the TCC locks so there is less/no slipping between the motor and the transmission innards.
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Old Jan 7, 2007 | 08:14 PM
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From: alabama
Car: 92 camaro rs
Engine: 350 tbi/416's/comp xe268
Transmission: 700r4
Axle/Gears: 3.42
yes stock pump and regulator
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Old Jan 7, 2007 | 08:26 PM
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From: Hurst, Texas
Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
Check your TV cable adjustment and transmission fluid NOW.
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Old Jan 7, 2007 | 11:47 PM
  #5  
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From: alabama
Car: 92 camaro rs
Engine: 350 tbi/416's/comp xe268
Transmission: 700r4
Axle/Gears: 3.42
oh crap when you say it like that I'm scared what do you think? its 1145 so i cant go outside but will tomorrow. Do you also think i could have a bad torqe converter... now im worried hope you can reply soon
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Old Jan 7, 2007 | 11:52 PM
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From: Hurst, Texas
Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
Originally Posted by Colts45s
oh crap when you say it like that I'm scared what do you think? its 1145 so i cant go outside but will tomorrow. Do you also think i could have a bad torqe converter... now im worried hope you can reply soon
RPM flare in a 700r4 is most likely caused by low line pressure. If the TV cable is too loose, the line pressure will rise to slow to keep up with the torque rise of the engine. What intake setup are you running with the 416 heads?

When you pulled the engine, you likely lost fluid out of it.

Hopefully you haven't hurt anything yet.

Keep in mind that the converter is going to stall higher behind the 350 than the 305. Especially at higher throttle openings.
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Old Jan 7, 2007 | 11:58 PM
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Colts45s's Avatar
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From: alabama
Car: 92 camaro rs
Engine: 350 tbi/416's/comp xe268
Transmission: 700r4
Axle/Gears: 3.42
im running a edelbrok performer intake with transdapt adapter plate on stock tb with orange blk injectors wich im pretty sure makes them 61#s right
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Old Jan 8, 2007 | 12:02 AM
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From: Hurst, Texas
Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
Originally Posted by Colts45s
im running a edelbrok performer intake with transdapt adapter plate on stock tb with orange blk injectors wich im pretty sure makes them 61#s right
Should be 61 lb/hr injectors.

You adjusted the TV cable after putting that intake setup on there right?
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Old Jan 8, 2007 | 12:05 AM
  #9  
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From: alabama
Car: 92 camaro rs
Engine: 350 tbi/416's/comp xe268
Transmission: 700r4
Axle/Gears: 3.42
nope just flipped through my note book i made while doing the swap and it's not there so thats what I'll be doing on it tomorrow. i know I've put about 30 miles on it maybe less you think that may have hurt anything?
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Old Jan 8, 2007 | 12:09 AM
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From: Hurst, Texas
Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
Originally Posted by Colts45s
nope just flipped through my note book i made while doing the swap and it's not there so thats what I'll be doing on it tomorrow. i know I've put about 30 miles on it maybe less you think that may have hurt anything?
Probably not

Look at the fluid though

Hopefully it will not smell like burnt peanuts.
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Old Jan 8, 2007 | 12:10 AM
  #11  
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From: alabama
Car: 92 camaro rs
Engine: 350 tbi/416's/comp xe268
Transmission: 700r4
Axle/Gears: 3.42
lol kool beans thanx for the tip ill reply the results tomorrow after i do the adjustment
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Old Jan 8, 2007 | 12:12 PM
  #12  
Colts45s's Avatar
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From: alabama
Car: 92 camaro rs
Engine: 350 tbi/416's/comp xe268
Transmission: 700r4
Axle/Gears: 3.42
ok well tv cable is freyed and wont return into the reciever section so I am getting new detent and having it installed due to lack of time on my part should be done friday when I take it in will keep you posted on results
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Old Jan 9, 2007 | 12:10 PM
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From: Moorestown, NJ
Car: 88 Camaro SC
Engine: SFI'd 350
Transmission: TKO 500
Axle/Gears: 9-bolt w/ 3.23's
Misadjusted TV cable/bad cable geometry is definatly the quickest way to smoke a trans. If the fluid burns, then the frictions are trash. Theyre only made of paper. If its only slightly discolored/faded but smells ok then the trans is probably unharmed. If its dark and smells like burnt pancakes/peanuts, or even worse, creosote, then it needs to be rebuilt. When adjusted, the TV cable should be TIGHT at WOT. If theres slack in the cable with the throttle fully open, then its not properly adjusted

As far as tuning, get a wideband. Teh stock NB isnt the greatest way to tune. Also, the stock timing really sucks. A quick and dirty way that I really like to get the timing set is to use a vac. advance distributer curve. Curve it like it would work if it had a non-CC distributer. Ive done this on my setups and it works quite well to get the car off and running.

Last edited by dimented24x7; Jan 9, 2007 at 12:16 PM.
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Old Jan 12, 2007 | 12:14 PM
  #14  
Colts45s's Avatar
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From: alabama
Car: 92 camaro rs
Engine: 350 tbi/416's/comp xe268
Transmission: 700r4
Axle/Gears: 3.42
ok well detent replaced and adjusted and solved my problem the trans fluid is a lil discolored dont smell burnt tho so Thanks everyone for your input
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