86 Silverado Father and Son project - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mcbassin · 08-09-2009, 10:24 PM

More progress! We got the donor engine out today! (thanks Garrett for the help). Anyway, Here are the pics, it seems there are a bunch of extra wires to get rid of. Notice the number from the ecm. Hopefully, I can try to start sorting out the harness tomorrow.

mcbassin · 08-16-2009, 11:06 PM

Small progress. I pulled all the rest of the wiring from inside the donor, pulled the fuel tank and all the lines. Hopefully, I can use some of these parts. The car is pretty much ready for the scrap yard. We'll probably wait until the engine is running before hauling it off. Just in case we need parts off it.
Then started trying to seperate the harness and figure out the wiring. I'm totally lost on how this should be done. I noticed most of the TBI upgrades are guys just adding the system and not starting with a complete motor and tranny that was running. Maybe, I'm just lazy or crazy but I thinking I'm going to just stick it into the truck and make the connections in the truck.

I got the bulkhead connector off and tried to get the gooey glue off (messy). I hoping to leave the engine harness pretty much the way it is and intergrate the necessary truck connections like the temp, oil press, starter and anything else it takes. The truck harness is covered in oil. I guess the PO had a massive leak and it covered every wire in there. Photos:

mcbassin · 08-18-2009, 10:19 PM

Update:
We decided to bypass the wiring "problem" for now. We just finished stabbing the motor this evening. (no time for pics). It looks like the tranny is sitting back about 5 - 6 further than the original tranny. I'm not 100% sure yet but it looks like I may need to move the cross member back and get a different driveshaft. Man, today was the first time I crawled under the truck. I knew from looking at the engine and bay that the PO had an oil leak but, man the whole under side of the truck is COATED with oily slime. I wish I had a pressure washer. I am going to see about borrowing one. I hope to get some photos tomorrow.

cableguy0 · 08-18-2009, 11:29 PM

there should only be a 3 inch difference between the th350 and the 4l60 mounting point. 2 inches if your trans is a 700r4 which I think it is. if your th350 has a 9 inch tail shaft the driveshaft should swap right over. if its a 6 inch shaft your about 3 inches short but getting the driveshaft out of a truck that came with a 700r4 stock shouldnt be a problem

mcbassin · 08-19-2009, 12:11 AM

Quote:

Originally Posted by cableguy0

there should only be a 3 inch difference between the th350 and the 4l60 mounting point. 2 inches if your trans is a 700r4 which I think it is. if your th350 has a 9 inch tail shaft the driveshaft should swap right over. if its a 6 inch shaft your about 3 inches short but getting the driveshaft out of a truck that came with a 700r4 stock shouldnt be a problem

I'm not sure what tranny the truck came with. It's in the pic above in the bed of the truck. And I don't have a clue what the car had in it. I will move the cross member tomorrow and try to figure out how much too long the driveshaft is. You said the difference could be 2 inches for the 4l60? Would it be possible to find an OEM driveshaft? Maybe at a salvage? I could cut it down at work and re-weld it if necessary. I have access to TIG welder. It may need to be rebalanced though right? Thanks for your help!,
Mike

cableguy0 · 08-19-2009, 12:19 AM

measure the tail shaft. see if its 6 or 9 inches. its a th350 in the bed of the truck.measure just the tail housing thats bolted on with the 4 bolts. make sure the clam shell mounts bolted to the engine from the car are the same as the ones on the motor from the truck.

mcbassin · 08-19-2009, 07:44 AM

Quote:

Originally Posted by cableguy0

measure the tail shaft. see if its 6 or 9 inches. its a th350 in the bed of the truck.measure just the tail housing thats bolted on with the 4 bolts. make sure the clam shell mounts bolted to the engine from the car are the same as the ones on the motor from the truck.

I didn't change the mounts you are talking about. I thought they only made one hole pattern on those. The dist. looked pretty good in relation to the firewall, but it was dark and late by the time we got done. Hopefully, more progress today after work. Thanks,
Mike

08-09-2009, 10:24 PM	#1
mcbassin Still Learning Join Date: Jul 2009 Location: Central Oklahoma Posts: 10,108	Re: 5.7 TBI in an 86????? Anyone done this swap?? More progress! We got the donor engine out today! (thanks Garrett for the help). Anyway, Here are the pics, it seems there are a bunch of extra wires to get rid of. Notice the number from the ecm. Hopefully, I can try to start sorting out the harness tomorrow. __________________ Mike "69 Short Wide" My Project 86 Silverado Landen's Project Instagram: @mcbassin My Website C/10 Club Oklahoma Facebook Group Last edited by mcbassin; 08-12-2009 at 03:39 PM.

08-16-2009, 11:06 PM	#2
mcbassin Still Learning Join Date: Jul 2009 Location: Central Oklahoma Posts: 10,108	Re: 5.7 TBI in an 86????? Anyone done this swap?? Small progress. I pulled all the rest of the wiring from inside the donor, pulled the fuel tank and all the lines. Hopefully, I can use some of these parts. The car is pretty much ready for the scrap yard. We'll probably wait until the engine is running before hauling it off. Just in case we need parts off it. Then started trying to seperate the harness and figure out the wiring. I'm totally lost on how this should be done. I noticed most of the TBI upgrades are guys just adding the system and not starting with a complete motor and tranny that was running. Maybe, I'm just lazy or crazy but I thinking I'm going to just stick it into the truck and make the connections in the truck. I got the bulkhead connector off and tried to get the gooey glue off (messy). I hoping to leave the engine harness pretty much the way it is and intergrate the necessary truck connections like the temp, oil press, starter and anything else it takes. The truck harness is covered in oil. I guess the PO had a massive leak and it covered every wire in there. Photos: __________________ Mike "69 Short Wide" My Project 86 Silverado Landen's Project Instagram: @mcbassin My Website C/10 Club Oklahoma Facebook Group

08-18-2009, 10:19 PM	#3
mcbassin Still Learning Join Date: Jul 2009 Location: Central Oklahoma Posts: 10,108	Re: 5.7 TBI in an 86????? Anyone done this swap?? Update: We decided to bypass the wiring "problem" for now. We just finished stabbing the motor this evening. (no time for pics). It looks like the tranny is sitting back about 5 - 6 further than the original tranny. I'm not 100% sure yet but it looks like I may need to move the cross member back and get a different driveshaft. Man, today was the first time I crawled under the truck. I knew from looking at the engine and bay that the PO had an oil leak but, man the whole under side of the truck is COATED with oily slime. I wish I had a pressure washer. I am going to see about borrowing one. I hope to get some photos tomorrow. __________________ Mike "69 Short Wide" My Project 86 Silverado Landen's Project Instagram: @mcbassin My Website C/10 Club Oklahoma Facebook Group Last edited by mcbassin; 08-18-2009 at 10:21 PM.

08-18-2009, 11:29 PM	#4
cableguy0 Senior Member Join Date: Apr 2000 Location: Delta,Pa Posts: 14,948	Re: 5.7 TBI in an 86????? Anyone done this swap?? there should only be a 3 inch difference between the th350 and the 4l60 mounting point. 2 inches if your trans is a 700r4 which I think it is. if your th350 has a 9 inch tail shaft the driveshaft should swap right over. if its a 6 inch shaft your about 3 inches short but getting the driveshaft out of a truck that came with a 700r4 stock shouldnt be a problem __________________ Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member.

08-19-2009, 12:19 AM	#6
cableguy0 Senior Member Join Date: Apr 2000 Location: Delta,Pa Posts: 14,948	Re: 5.7 TBI in an 86????? Anyone done this swap?? measure the tail shaft. see if its 6 or 9 inches. its a th350 in the bed of the truck.measure just the tail housing thats bolted on with the 4 bolts. make sure the clam shell mounts bolted to the engine from the car are the same as the ones on the motor from the truck. __________________ Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member.



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