bmiller
Newbie
I'm going to apologize before I even begin. I'm a lifelong mechanic with scads of experience with old (40s-90s) cars with modification, but only repairs on newer vehicles. I'm searched far and wide and it's possible I'm not using the correct terms.
My customer is having me swap a 2004 GMC 5.3 into his 1998 Chevy K1500 and he wants to use his original 4L60e transmission.
I think i have a decent handle on everything except the transmission. I'm confident the transmission will bolt up minus the top bolt.
The questions I have are:
1. I'll need to retain the original shift computer? In the online interchanges I have seen it listed both ways. The tuner that's removing VATS advised me to use the 2004 truck engine side which has the transmission wiring attached. He advised me to use the LS computer to run it. One online interchange said both transmissions are wired identically. Next online interchange said that the 2004 transmission uses one plug for control while the 1998 transmission uses 2?
2. Will the torque convertor bolt up? In Oreilly's and other parts listings they show the convertor being 5 bolt in 1998, and the 5.3 I pulled is 3 bolt. The online videos show them all being 3 bolt. The input shafts also appear to be a different size, so I would assume I have to use the 1998 convertor? I'm guessing I use the stock 5.3 flexplate and the stock 1998 5.7 convertor?
3. Is there any spacers/bushings I need to buy? I've also seen this answered both ways. One guy says I need a bushing, but the next guy says only for turbo 400/350. Next guy said only on a 6.0.
I'm sorry as these questions I'm sure have been asked a hundred times.
Thanks for any help.
My customer is having me swap a 2004 GMC 5.3 into his 1998 Chevy K1500 and he wants to use his original 4L60e transmission.
I think i have a decent handle on everything except the transmission. I'm confident the transmission will bolt up minus the top bolt.
The questions I have are:
1. I'll need to retain the original shift computer? In the online interchanges I have seen it listed both ways. The tuner that's removing VATS advised me to use the 2004 truck engine side which has the transmission wiring attached. He advised me to use the LS computer to run it. One online interchange said both transmissions are wired identically. Next online interchange said that the 2004 transmission uses one plug for control while the 1998 transmission uses 2?
2. Will the torque convertor bolt up? In Oreilly's and other parts listings they show the convertor being 5 bolt in 1998, and the 5.3 I pulled is 3 bolt. The online videos show them all being 3 bolt. The input shafts also appear to be a different size, so I would assume I have to use the 1998 convertor? I'm guessing I use the stock 5.3 flexplate and the stock 1998 5.7 convertor?
3. Is there any spacers/bushings I need to buy? I've also seen this answered both ways. One guy says I need a bushing, but the next guy says only for turbo 400/350. Next guy said only on a 6.0.
I'm sorry as these questions I'm sure have been asked a hundred times.
Thanks for any help.