[David_D.]

Well, I had an opportunity to test the changes I made to the car yesterday.

My previous best ET was 10.93 @ 123 back in 07. It's never been that quick since.

Changes made:
*upgraded from a set of AFR 210's (pre-eliminators) to the current 210 eliminator heads. Both sets are the race ready head out of the box.
*Comp Cams belt drive
*crank trigger.
*electric vacuum pump.
*also changed my Cal Tracs setting (which hurt 60'). Will be going back to my previous settings.

The only thing that added performance was the head swap. The vacuum pump doesn't pull enough vacuum to increase power, and was installed as a test to see how well it would remove condensation.

Anyway, to the new times:

First pass, trans was low on fluid which effected the pass.
R/T .047
60 1.542
330 4.593
1/8th 7.083
MPH 99.07
1000 9.228
1/4 11.042
MPH 124.36

Second pass
R/T .018
60 1.553
330 4.527
1/8th 6.995
MPH 99.78
1000 9.127
1/4 10.929
MPH 125.05

Third pass (hot lapped right back into the lanes) and in the poorest air of the day with a DA of 3089.
R/T .028
60 1.533
330 4.471
1/8 6.921
MPH 100.36
1000 9.039
1/4 10.829
MPH 126.06

We did have a strong steady tail wind which helped out, but still some positive results. These new heads really work!

 

[Mark Romeo]

What are the specs on your combo. S

 

[David_D.]

You can find my combo here:

http://www.stevesnovasite.com/forums/showthread.php?t=12937 Look at post #13

 

[The Big Al]

yes they do!

I have the same!

Worth every penny!!!!!

Al

 

[71 Chevy]

congrats. looks like you have some more time left in there too. ive gotta ask. roughly how much did these upgrades cost?

 

[NOVACA1N]

Glad everything worked out...Just out of curiousity, what transmission/converter do you use? 60 foots are slow for the ET

 

[chevyIIheavy]

what are you doing with the old heads :yes:

 

[David_D.]

congrats. looks like you have some more time left in there too. ive gotta ask. roughly how much did these upgrades cost?

The belt drive was $400
The used crank trigger $125
The heads just over $2000
The T&D shaft rockers $800

Kinda spendy and not needed, but regardless, spent.

 

[David_D.]

Glad everything worked out...Just out of curiousity, what transmission/converter do you use? 60 foots are slow for the ET

I think some of that is in the CalTracs setting. Last year the first 3 passes were 1.550 in 60' and it was consistent 1.55 or 1.56 in 60' all year. Also, the cam was chosen so we didn't attack the tire too hard to avoid traction problems. We weren't sure how much torque we could put to the 9" tire.

I am using an 8" TCI group 12 race converter in a well built TH350. I'm leaving at 3300 off of dual line locks.

Thoughts?

 

[David_D.]

what are you doing with the old heads :yes:

The old heads are on our back up 357.

 

[bowtie0069]

We weren't sure how much torque we could put to the 9" tire.

I'm leaving at 3300 off of dual line locks

9" E.T. Street leaving at an idle with 200 shot...1.34 60 ft.
Leaving on transbrake at 6000 ...1.38-1.42
Slapper bars, junk springs, mis-matched junk shocks.

 

[NOVACA1N]

I think some of that is in the CalTracs setting. Last year the first 3 passes were 1.550 in 60' and it was consistent 1.55 or 1.56 in 60' all year. Also, the cam was chosen so we didn't attack the tire too hard to avoid traction problems. We weren't sure how much torque we could put to the 9" tire.

I am using an 8" TCI group 12 race converter in a well built TH350. I'm leaving at 3300 off of dual line locks.

Thoughts?

9" tires can take a lot..You'd be surprised. I plan on slapping some on my car in an effort to lose rotating weight..

 

[David_D.]

9" tires can take a lot..You'd be surprised. I plan on slapping some on my car in an effort to lose rotating weight..

Yeah, that's what we've found out! Hind sight is 20/20 I guess.