Engine swap 4.3L V-6 to 5. TL V-8?

DON DAUGHTREY

MEMBER
1990 CHEVROLET 1500
4.3L
6 CYL
4WD
AUTOMATIC
100,000 MILES

What I have going is I pulled the 4.3l out it was knocking. I had a small block 350 carbureted, I got the two motors swapped and got everything running. The truck was running just fine, then the other day I went to start it and the engine turns over, but it will not start. That is where I'm at. I have not tried to start it again until today. It looks to me to have no fire or spark. Now what do I do?

2 Replies

DON DAUGHTREY

MEMBER
2 POSTS

For now, I'm going to locate some wiring diagrams and then I can start checking a few things out. Removing the throttle body and replacing it with carburetor there are things that I don't need. Just want to make sure things are right. Don

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Friday, March 1st, 2024 AT 8:58 AM

STEVE W.

MECHANIC
12,998 POSTS

If it was running before I think you have it installed correctly. However what are you using for ignition and fuel on the 350? HEI and the carb? What did the 350 come out of?
Which fuel pump?

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Friday, March 1st, 2024 AT 6:08 PM