RHS head 416 at the track...part 'tree

w2360Duster said

Dusterdoug, now what are you running for jetting. What did you start with and whats does it(did) run best with.

Every time iv'e been to the track the car smokes out the exhaust. I still have not been able to get a proper tune out of this car beacuse of lousy track prep and suspension tire adjustments thrown in. Anyway it seems to run best with 75 primaries with a PV and 81 in the rear without thru 3" flowmasters at the diff. It seems these heads don't respond well to overjetting?.

Click to expand...

We had 83/90's (PV in the primary/no PV in secondary) when it went 10.33 last July. We then "tuned up" the 800 and one result was gaining 50 cfm. Being the smart guy that I am, I decided that required a jet increase, as well as the better air we were going to run in. THEN just to show more brillance, I decide I'm going to make a "race" carb out of it and eliminate the primary PV thus adding even MORE jet to the primary side.

On the last two runs Saturday it had (and still has) 78/80's, but that is .12 at the 1/8 mile slower than the 84/86 jets that were in on the 6.38/10.14 run an TnT the day before. So, that tells me the 84/86 jets were close. ???????????