I would think a 408 would be fine with open exhaust. What kind of exhaust do you have? I have a pair a flowmasters which I know are not very good for HP so my open exhaust nets me .2 off my time on avarge.

 

Yeah I have two 3" tailpipes in the stock location.

The heads are doing great but I'm sure there are better. I am running 12cc dished pistons w 64cc heads which brings me to 11.0 compression.

 

I have two magnaflow 3 in 3 out. The cutouts make me gain about a tenth but they make my truck sound like a race car.

 

race truck

 

lol

 

when i had the ecsb and running 11's i had a dual 3" into a crossover mangaflow dumpedl, i had 2 cut outs which netted me a lost in horse power so i removed them. now i have the drive line in a rcsb which feels very strong but hadnt dynoed it, but the exhaust is now HEADERS are 1 7/8 into 2" primaries into 3" collectors into 3" Y pipe into a XR-1 BORLA.


hey T, i hope the cam works well for ya!!!

 

Sure, your intake and 15,000 and i'll even throw in the rest of the truck with it

 

i dont think this has been proven, AT THE TRACK... dyno #'s are good but they dont give e/t results........ people on here prove it all the time @ the track.... it would had been nice to see your truck with cutouts to compare...

 

by the way "tarinitup"... i think that will be a very good n/a cam for your setup!

 

Well the new cam is installed and I love it. Street manners improved alot and it has more low end torque than I need. It burns the 24's like nothing so I cant imagine what it would do to a shorter tire. I noticed the engine doesn't rev up as quickly as with the old cam and my gas pedal feels harder (if that makes any sense) but part throttle has greater acceleration and top end is about the same. I will post idle vid later.