So, a just over year ago I did the 5.0 swap into my vert. I bought the engine from a guy for a 100. I figured for a C note you almost couldnt go wrong. He was insistant that I did not need to open it up at all and that I could drop it in and go. It had been in a street rod and was carbed at the time. For some reason I believed him(I know...someone wants to sell me a bridge too) but I put it in, took the Weiand carb intake off and sold it on ebay for 125. and sold his father my 2.3 for 50. So I had a motor for free plus 75 bux. XXX stamped HO firing order all good. Swap in the efi, start it and it runs flawlessly no smoke smooth. great! I checked the plugs before I installed it and they were good and clean and never changed them.
Flash forward to now. find that number 4 isnt firing. I check and see that the plug is cracked. Not thinking, I go to Pep boys and they give me autolite 25s. People have their preferences Ive never had issue with Autolites. Get em home and start with number 4. Cant get it in ...wont thread. So I look at the old plug. Autolite 2544. So Im thinking, "WTF?" 25s are the number for stock HO motors. Now I want to know so I check the interwebz for a cross reference and find that 2544s would go in to GT40 heads.
So Im wondering if my deal was better than I first thought. I havent looked for a casting number because I didnt feel like disassembling anything. I know...long story to get to the end but does anyone know of other heads that those plugs would go into?
Flash forward to now. find that number 4 isnt firing. I check and see that the plug is cracked. Not thinking, I go to Pep boys and they give me autolite 25s. People have their preferences Ive never had issue with Autolites. Get em home and start with number 4. Cant get it in ...wont thread. So I look at the old plug. Autolite 2544. So Im thinking, "WTF?" 25s are the number for stock HO motors. Now I want to know so I check the interwebz for a cross reference and find that 2544s would go in to GT40 heads.
So Im wondering if my deal was better than I first thought. I havent looked for a casting number because I didnt feel like disassembling anything. I know...long story to get to the end but does anyone know of other heads that those plugs would go into?