Engine swapping????

Nope. The closest to that would be the 355 throttle bodies Plugzit has on his car. Though there is a 308 running around with a 355 engine in it. If I'm not mistaken it's twin turbo charged too.

 

We figured that it makes no senes to do a 355/348 swap since the motors really are not the different in the end. Yes they have the 5 valves and 8 tbs, but it's considered an evolutionary step. Excelsior has the 308/355 turbo swap I believe. He's considering a 512TR transplant into his 355. Power junkie...

The 355 and 360 motors have 6-speeds to you are talking drive train swap. I can't see the reason given the cost. You can just save the cash and sell your 348 for a 355. Now it makes much more sense wringing out more output from the 348 motor.

 

The factory left a bit of untapped HP on the 348 IMO !

 

A freeflow air cleaner and Exhaust should add a bit. Pap gained over 18 RWHP with his X-ost brand muffler.

 

A Ferrari sage once said to me "if you want a faster Ferrari, buy one".

 

+1

 

Yup. Well, to be fair, the factory shipped some 348 Competizione's to Michelotto with 360 hp, changing only the chips (and substituting the F-40's half-shafts) and exhaust.

In turn, Michelotto bumped up more than one 348 CLM to as much as 550 hp.

Michelotto dumped the factory black u-tubes into the air intake and went with larger MAFs (as well as more agressive chipping). One such 348 had the 2nd fastest time in class at Le Mans in 1994.

None of the above were turbo-charged.

So there is more hp potential left untapped in most stock 348's. You want a free-er flowing exhaust, straight air intakes, larger MAF's, larger intake plenum, larger fuel injectors, and more agressive Motronic software (e.g. ignition advance, fuel/air ratio).

Individual throttle bodies or at least larger throttle bodies would also be a plus.

Same cams. Same cam/valve timing. Same block. Same stroke. Same pistons. Same fuel pressure. Don't touch the core of this beast. Just add more air, more fuel, better software, and more ignition timing advance.

Group77 also has a neat 348 trick with the ridiculous 90 degree bends in the fuel lines going up into the fuel filters that's worth stealing.

 

Can you get 550 hp out of a 360 motor without turbo-charging/super-charging, or nitrous?

...because you can get 550 hp from the 348 motor with simple bolt-ons. That's what ran in the 348 at Le Mans in 1994.

 

+2

Speaking of which. When are you gonna get yours on the rollers Dave?

 

What kind of RPM were these Michelotto machines turning???

 

9000

 

with the same engine internals (rods...) as production 348's?? Did they use the same intake manifolds??

 

For 24 straight hours at Le Mans 1994 (2nd fastest qualifying time, 4th place in class).

...that's probably more than 3600 miles of redline driving.

These beasts can handle it. They're tougher than most of their owners.

 

The 348 CLM engines used intake plenums that look suspiciously like the 1995 355 (as well as have 8 individual throttle bodies like the 1995 355's).

 

Plugzit is going to love this.......no wonder he's looking for a big rear wing.....200mph down the LA freeway with a BK whopper in hand and FBB navigating...lol