[BruceWilkie]

Two things I see with your combo. 1, put the cam straight up. 2, try more carb. The third thing is run a bigger tube header. The KRE's have a very good exhaust port take advantage! Also you have decent .050 duration on that cam but obviously it wants more net duration (0-.050" lift cam duration) as you have seen by increasing your duration by tightening your lash. I would also be looking at 112 L/CL installed at 110 - 108 I/CL. You may also consider a single pattern cam with large tube headers if your exhaust flow is 80-85% of intake flow(avg).

[formulabird428]

i am going to get a larger carb (hence why my 830cfm is for sale). after countless opinions & alot of research, I've narrowed it down to the QuickFuel 850 and QuickFuel 950. Q series vs. Professional series is yet another question (it's another post by itself).

as far as the header sizes, I originally started with the 2" hedman headers, but found that they look very dumb with the extra mounting flange, not to mention that they hit the frame and I would have had a difficult time cutting out the port holes out of the extra flange. ouldn't find any other options for a larger header.

For the cam straight up, would this affect the ability to run 93/94 octane with 11.0:1 compression (210psi)? could i still run pump gas?

I guess, maybe, I'm a little frustrated because I told kauffman I wanted a pump gas engine (when I ordered the heads & had them assemble the engine). I'm not bashing them, because they did great job, but I'm uncertain why they cut it so close with the compression. I believe I originally suggested 78 to 80cc heads...but...I guess now, they could always open the chambers up a little...

I have becopme worried about detonation vs. compression/octane because I already "lost" one engine's rod bearings. The upper half was into the copper layer, and the engine only had 91 miles. No harm was done, but I'm sure something bad would have happened. Even this engine, I'm still uncertain about it, almost to the point of pulling it out of the car (real quick) and checking a few bearings...maybe just for peace of mind.