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

In the last episode, (SIX months ago!) we got the low dollar hauler RHS-headed 416 to go a 10.33 @ 131, throught the muffs. Here's a quick combo recap:

4.07 340 block
SCAT 4.00" crank
SCAT I-beam rods
KB 745 flat top slugs (.020 out of the hole)
RHS LA heads (2.02 intake)
Custom Bullet flat tappet cam (268/276 - .585 after lash)
Eddy Victor
Holley 800
904 (2.45 low gear)
8" Contnential converter (freshened by Len Schneider)
4.56 8 3/4 with a 29.5 Phoenix slick

Car weights right at 3,100 race ready.

Turns out our 131 MPH was BOGUS. The Sac clocks then were 3 MPH faster compared to other tracks. They are now fixed, but I really was liking that we had a 130 MPH small block. Oh well...

We have rebuilt the front end, and added Wilwood's up front and done a little carb work. Added 50 cfm to the ol 800 Holley and thought we'd go out look like we knew what we doing as the air was real good compared to the July evening air that produced the 10.33. Well, I spent 6 runs chasing a carb problem that I THOUGHT was present, all the while ignoring the one that was obvious. Results:

12.88 @ 91 (Don't ask)

10.34 @ 126 (Leaned it...black smoke says it's rich)

10.14 @ 129/6.38 @ 107 in the 1/8 (Leaned it some more, still rich)

I now have less fuel in it when it ran the 10.33 last summer, but it's still fat. IN BETTER AIR???!!!??? I don't get it. More wasted gas and runs the next day but were 1/8 mile -

6.68 @ 105 - Leaned it some more. WHAT?? Where's the 6.38 from the 10.14 run the day before?? Same air, but still very rich... #*&@%%!

6.50 @ 106 - (Leaned it some more...but plugs are UGLY)

6.50 @ 106 - (Fresh plugs. Guess the old ones that I just tossed in the trash weren't so bad, huh? Lost first round with a .012 light and a 6.48 dail. I just wanna go home now...)

I figured out where I had my head up my a** and the carb's getting fixed tomorrow night when I have the time. Turns out it WAS NOT rich, but the tuner (me) was LEAN IN THE BRAIN CELLS. Back up next Saturday, weather permitting.

Interesting to note that on the 10.33 run last summer it went 1.40 flat in 60'. This weekend it only could go 1.41 (on the 10.14 run) leaving at the same RPM. Well, the front end does seem kind of stiff since it was rebuilt...but is that it or the carb issues?? I would have THOUGHT a very high 1.38 was doable...but what do I know? Obviously not much...

At least it drives easier and stops MUCH better!