360 engine in 348?

I understand there is alot of dreamers making posts like this, I've worked in exotic performance/fabrication shops for years, after that I went into race cars and worked on grand am cars, lmp cars, formula 2, indy, etc I'm fairly capable and have a couple thousand sq ft backyard shop at my house. My neighbor and good friend is also a machinist with a full machine shop in his back yard shop. Honestly after doing more research the only part that I have any concern about is having a harness built to run haltech and tuning, right now looking into seeing if haltech supports the trigger pattern needed. I've compared pictures of blocks, heads, intake manifolds extensively and I actually firmly believe a 360 block/heads will bolt right into a 348 subframe, 355 itb's will bolt right up to 360 heads, and a 348 transmission will bolt right onto a 360 block. Accessories, oil pan, etc would need to be changed of course. There seems to be alot of misconception with people thinking 348/355/360 stuff is drastically different, Ferrari isn't Ford why redesign parts and spend the expense and space of new/more tooling every model year when it's just not necessary.

 

Agreed but Ferrari isn't going to make a new crank that's 5mm off from the one they were previously making financially for the size of a company Ferrari was in the 90's it just wouldn't make sense. That said since the block is the almost identical between a 348/360 I would suspect worst case scenario a 348 crank could be used and my 348 crank is perfectly fine.

 

My post here isn't to have some dumb ass hair-brained idea then never turn it into fruition I'm hoping someone has actually had some experience crossing or having these parts side by side, comparing pictures to make sure you're in the right ball park and it's feasible is the first step, there is no where local I could put my hands on these parts to measure so I will most likely just have to order and engine or heads before getting real definitive proof.

 

I loved driving my 348, my car has tubi exhaust it sounded pretty good however my car had detrimental engine failure about a month ago so regardless engine has to come out and either current engine has to be rebuilt or I make the car even more enjoyable to me, had my car not had detrimental engine failure I wouldn't be considering this direction. I prefer 348 styling and with my car needing an engine just selling and buying a 360 isn't an option if that was even something I wanted to do.

 

I have noticed alot of posts like these come up then are never revisited I'll let yall know what direction I decide to go one way or the other. I may pull my engine this week to see how bad the damage is and that will definitely sway my decision I'm sure.

 

I understand what you're saying now but I'm still not finding this to be a major issue, my neighbor is a machinist and Im sure we can adapt, he has the tooling to cut splines. Worst case scenario I'm quite sure a 348 crank would work in a 360 block.

 

If I go forward with this it will be a custom harness on a haltech ecu, I wouldn't do it any other way, I also want to run 355 itb's with velocity stacks so I would have to go map sensor which wouldn't be possible on a stock ecu. Making factory gauges work should be relatively easy.

 

If that was the case I would just use a 348 block but I don't think that will be the case, 348 and 360 are both 85mm bore, 348 is 75mm stroke and 360 is 79mm stroke which is what makes the displacement .2 L more. According to everything I can find ferrari used essentially the same block 348/355/F40/360 with only slight changes. Here is a 348 vs 350 head for comparison, the 360 actually has one less passage than the 348 which makes life alot easier than vise versa.
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Oops sorry those are both 348 heads here is 360 head

 

That I'm not sure on, but that's a good idea, I'll probably put my car on the lift, drop motor see how bad the damage is and start taking it apart to get the measurements from the 348 side of things in the next week or so

 

Dropped a valve... end of my spark plug for a good laugh
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You are right and after talking to my neighbor whose a machinist he thinks using the 348 block, crank, and rods with 355 pistons and 360 heads will be the most ideal situation, it won't be a plug and play affair of course but will minimize alot of the more complicated aspects and make the machine work that's needed much less complex, the pistons are both 85mm between 348/355 they appear to be the same height, we are unsure if wristpin size I'd the same, I'm going to order a 355 piston vs to compare then go from there.