I have a few questions I want to ask

[Celena]

Soliciting advice on a camshaft grind for my 2.4 short stroke build.

I’m torn between the DC30(mod solex) and DC40(mod s) grinds.

Car will mostly be street driven and I want longetivity and reliability in the build.

2.2T case with original non counterweighted crankshaft
Casework at Ollie’s with case savers and bypass mod
ARP hardware throughout
87.5mm LN Nickies with JE Pistons
2.4 liter with 9.5:1 compression ratio
Webers from a 67S with enrichment tubes 32mm Venturis and S setup
Stock 2.2 heads (will keep 32/32 ports if DC30 or open to 36/36 if DC40 selected)
Single plug with Bosch distributor recurved to match cam grind
Stock 5spd transmission
Fender mounted oil cooler
Upgraded oil pump
91 octane fuel (93 is hard to find in Maine)

Does anyone have experience with a similar build with either of these camshafts?

How does the car drive? powerband, horsepower, torque, carb settings, etc.?

[Bigtoe32067]

Dc40 because if it was me I would be looking for all the performance I can get from a particular build.
Open up the ports, slide in the dc40’s in and let her rip. Sounds like it’ll be a fun little motor.

It will depend a lot on your personal driving style. If you zing it almost to redline when you drive them the dc40 and opening the ports is for you
If you are a more leisurely guy who short shifts and wants more lower end grunt then the smal ports and dc30 would make you happier.
Tony

[cmcfaul]

my experience with DC30's and closer to 10.0/1 CR (same JE pistons but heads were machined a few times over the years increasing compression). Otherwise stock 2.4E. Car pulled well to 4k RPM's then hit power band beyond the 7300 rev limiter. It was full on powerband at 7300 RPM's. Was always curious how high it wanted to rev to before it ran out of breath. People always commented on how fast my car was. I would not change a thing if I had to do over again except maybe try to lighten the top end and see what rpms it could take. I also did the ARP bolts on the rods and flywheel.

Chris 73 911 E