- Thread starter
- #81
Mad Hatter
Gotta go Faster
Well parts are arriving soon for build 3.0... Bottom end will be the same K1/Wiseco setup and had the crank magnafluxed it came up fine. For the heads, we are doing a full porting with valve a job with 37.3 and 31.8mm valves. The stock untouched heads are ugly compared to the Boss heads but they seem to working out so far.
The initial gen1 head flow numbers are about 280cfm at 0.500 lift and approx 290 cfm for the boss heads at the same lift. My nutty builder wants to get them to 330 cfm at 0.500 which would be fantastic, So far we have 315 cfm and nice numbers at lower lift as well, getting to 320cfm would be fine by me. Truly amazing what you can do with a good anemometer, a industrial vacuum cleaner and a head bench! Ahh, and of course the secret sauce of someone who loves porting heads and has been doing it for a while. Once we get to the max possible value, he will use templates and testing to get to the same values for all the other ports. Using the dead boss head as the trail horse for the changes, So, at this rate the heads will be ready in a couple of weeks. Which means we can build the bottom end slowly and carefully.
Once the heads are done, they will be topped off with a VMP Dual 67mm TB with Cobra jet manifold and a JLT CAI. The LM intake only cams where saved from the Boss heads. Would really like to get to 470rwhp if possible. And to top it all off an updated AED race tune.
This time around will keep the rpms to 7800rpm max and watch the down shifts.
The initial gen1 head flow numbers are about 280cfm at 0.500 lift and approx 290 cfm for the boss heads at the same lift. My nutty builder wants to get them to 330 cfm at 0.500 which would be fantastic, So far we have 315 cfm and nice numbers at lower lift as well, getting to 320cfm would be fine by me. Truly amazing what you can do with a good anemometer, a industrial vacuum cleaner and a head bench! Ahh, and of course the secret sauce of someone who loves porting heads and has been doing it for a while. Once we get to the max possible value, he will use templates and testing to get to the same values for all the other ports. Using the dead boss head as the trail horse for the changes, So, at this rate the heads will be ready in a couple of weeks. Which means we can build the bottom end slowly and carefully.
Once the heads are done, they will be topped off with a VMP Dual 67mm TB with Cobra jet manifold and a JLT CAI. The LM intake only cams where saved from the Boss heads. Would really like to get to 470rwhp if possible. And to top it all off an updated AED race tune.
This time around will keep the rpms to 7800rpm max and watch the down shifts.