Just curious how the two engines stack up. Is there any significant differences between the two other than the increased size? I ask because I'm tempted to pick up a 328 engine to "hot rod". I could keep my stock Euro QV engine for originality to swap back in the future should I need to. Nothing two crazy but I'd really like to add carbs or ITB's. The carbed Mondial sticky threads got me thinking bad thoughts. I really, really love the vintage look and sound of carbs It's more of a Singeresque project. I'm not looking for 400+ horsepower.
Don't fool around. Turbocharge it and hold on. It will not make much difference if its a QV or 328 engine. Both will require rebuilding for boost. good luck.
There's a bolt on Supercharge kit you can buy for stock QV or 328 block that can put out close we to 350 HP.
I lean towards supercharger. Mike C did it to his. He has had about a decade of trouble free enjoyment from it now.
Thanks for the replies. My sole goal isn’t more horsepower. If it was I’d probably just supercharge it. I love the 3.5 liter engines but IMO the pricing is insane. I’m looking more to get back to Ferrari’s vintage roots by ditching the terrible fuel injection. I’m a big fan of Singer and how the 911 crowd ditched their FI for carbs. I have a CNC to machine my own parts. I found a 328 engine and was thinking of using it simply so I could easily swap back to original by keeping my QV engine. Hence my question if it would be worth it or if they are essentially the same.
Are you not going to have to replace the cams to get the most from the carbs? Finding them may be the hardest part of all this
Excellent question. I’ll have to reread the Mondial threads. If I remember correctly his first setup used stock cams. He did upgrade the cams later, hopefully it’s a readily available source. Lots of info in there but I need to sift through and make a list. My memory is hazy.
i know that heads, cams are slightly different and the upped CR with the larger displacement. a mondial unit will have a hydraulic clutch issue to deal with..
You'll end up down the rabbit hole, so you might as well plan the full schmeer from the get-go. To get the most out of the carbs, change the cams. To get the best out of the carbs/cams, up the CR, which means new pistons. So you should rebuild the bottom end when you have it all apart. So might as well service the heads with new guides - while you're in there, and to get the most out of the carbs/cams/increased CR, you really should port the heads. If you're going to do all that, new pulley bearings and seals, too. And clutch. To really take full advantage, it's not much more to lighten the flywheel. You know, if you're going to completely re-do everything, it's probably not much more to put a 360 crank and new liners to up the capacity. Actually, now you've gone this far, why not ditch the (still new in the box) carbs, and put in TB injection - it'll look the same, and work much better... Actually, now I think of it...
You would be going backwards with carbs. A good stand alone FI system is a far better and reliable choice.
Lol, it does get endless! I already restored the suspension, cooling, AC, brakes and steering so the can of worms is officially opened. Technically true but I still think carbs are a thing of beauty. If I chicken out on the carbs or ITB's I'll probably just add EFI and call it a day.
