Gathering from all the searches I have done on the subject of 355's, I've gathered you dont need a forged crank for a N/A setup, but instead forged lightweight pistons. Question is, what kit and from whom offers that kit?

Also, I couldn't find a definate answer on what is a good cam for a N/A 355. I'd like a high reving motor, and I currently have a 224/230 112 lsa in my car. Is that a good choice, or is there a better option?

 

Summit sells a Mahle piston/ring/wristpin package that's really good. I believe it's around $600, maybe a little less than that.

I've got a 236/248 111 LSA cam in my car now and it's giving me some low vacuum issues. If you are looking for something high revving that ought to do the trick If you have specific cam characteristics that you want, it would probably be good to talk to someone about a custom grind cam.

 

Brand: Mahle Motorsports
Product Line: Mahle PowerPak Piston and Ring Kits
Bore (in): 4.030
Piston Material: Forged aluminum
Piston Style: Dome
Compression Distance (in): 1.250
Valve Reliefs: Two
Dome Volume (cc): 11.00
Wrist Pin Style: Floating
Pin Diameter (in): 0.927
Gapless: No
File Fit: Yes
Top Ring Thickness: 1.5mm
Top Ring Material: Iron
Top Ring Facing Material: Plasma-moly
Second Ring Thickness: 1.5mm
Second Ring Material: Iron
Second Ring Facing Material: Cast iron
Oil Ring Thickness: 3.0mm
Oil Ring Material: Stainless steel
Oil Ring Tension: Standard
Quantity: Sold as a kit.
Notes: Phosphate dry lubricant coating. Grafal anti friction coating to the skirt 13.0:1 compression design based on 64cc head.


should this work out nicely for a N/A setup? Only thing is I might throw a 75 shot on for some straightline power if needed, but thats only a possibility.

 

Get with your machine shop and make sure they will provide the proper compression ratio with your parts. If that checks out ok those will be great for you, and will be fine with some spray.