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« on: March 25, 2011, 12:57:23 AM »
Just ran across this tonight. I'm in the process of finishing the wiring on my Fd witha ls1 4l60e (2001 model) swap. I've already wired in the generator resistor as stated in the harness mod instructions. But I just read that it can cause a transmission problem (auto cars). Any more info on this to clear up if I need the resistor or not?
Heres the post i found on , nopistons forum.
Posted 05 June 2010 - 12:14 AM
"I've had an FD with a LS1 4L60E conversion for a few years now, & I followed instructions from the old V8 RX7 site to add a resistor in the generator circuit as GM used the resistance of a dash light bulb for the Gen circuit. Granny's site says that later LS1's do not need this resistor, so I queried the members about it & I was reassured that indeed I needed that resistor. NOT TRUE !! When the engine was warm the solenoid would only click,when I tried to start it, so I thought I needed a new solenoid. Bought one, installed it & a few days later same thing! So I started monitoring voltage digitally when driving, to my surprise 11.8V !!!! It would only ever get to 12.3 only after engine crank. But what really made me clue into it was last year (car is in storage over winter) the 4L60E packed it in, cost me $2,000 to repair. This year I drove it 2 mths then all of a sudden 3rd & 4th gear would only slip. I pulled the tranny out again & the shop did the warranty work on it but then they found out my running voltage and told me that a step solenoid in the tranny runs on increments of .1V to provide pressure to the clutch packs. Guess why 3rd & 4th blew out!! I took the resistor out today and guess what? 13.4 volts!!!! My LS1 / 4L60E package came out of a 2002 Camaro. So consider this a warning for you guys doing this swap. "