| Re: Another trip to the track |
Subject: Re: Another trip to the track by wesmigletz on 2008/10/29 15:06:04 Quote:
Matatk, I did expect to lose ET and possibly even MPH. The opposite happened. I suspect it was due to the low-rise dual plane simply having too small of a plenum, not so much the porting. If I had the $$$, I'd like to extrude hone the intake and notch the plenum divider similar to an RPM. That would probably pick me up .1 - .15 seconds in the 1/4. I also think if I spent some time on a chassis dyno with my LM-1 and timing light, I could find another 10-20 HP, and if I leaned my IFRs, I might pick-up some economy too. Intake port on head vs intake mismatch (1206 gasket)  I'm going to be pulling the engine this weekend. I'll be swapping to a HR cam with similar specs and getting some dyno numbers. Hopefully it picks-up HP and torque without costing me idle vacuum. From there, I will also be doing an A-B head swap on the dyno. The engine will be going back in the car and back to the track. At that point, I will no longer have just an opininon, I will have dyno numbers from the same dyno same day, and time slips. From there, who knows, I may swap my stock heads back on (if the HR cam picked up HP and torque). I'd like to have my stock, cast iron intake fully ported, and I'd clean-up a set of 2.5" rams horn manifolds. I'd like to see if I could dip back into the 12s with the stock engine (block, heads, intake, carb, and ex manifolds). Considering our car is a low-horse, automatic "secretary's" car, I think it would be fun to do. |
