headed to the track tonight

[64falconsix]

Mobile dragway will be opening for a test and tune tonight.the last and only time I ran the six was in August 08 ,92 degrees and 80% humidity, with only 700 miles on the clock untuned running low grade E10 I made 3 runs but was running lean , the next day I pulled the plugs (I trailered to and from the track) and all were white with number 6 having a slightly burned insulator.after installing the AFR I was going real lean at WOT. now with the AFR , a bunch of tuning and almost 3,000 mile on the clock I just changed the oil, loaded the timing light , pill bottle of jets and a half tank of non ethanol 89 octane, with tonights low humidity and temps in the mid 60s I will see if I can lower the ET in my sig.

 

[bubba22349]

good luck at the track am interested in how you do.

 

[64falconsix]

Just checked weather conditions 31% humidity which is very low for this part of the country and dipping from the high of 75 then dropping fast to a low of 52.

 

[bubba22349]

Should make some good power with temps like that, hope the track has good bite too!

 

[64falconsix]

Not quite what I had hoped but I am happy.
60' 2.46
10.29@61.91 was the best run shifting at 5,300 rpm.

 

[bubba22349]

Did you get some video's of your runs?

 

[64falconsix]

This is the 2nd run and the low ET for the night. I adjusted the timing a couple of times without a very noticable change in times, I ran faster than the et I ran in 08 but had a slightly larger (in circumference) tire with no traction issues this time.It is evident that with an automatic transmission I need a higher stall conveter to get the car off the line and into a range where the engine is making power. you can hear in the vid the engine sounds strong. one of the guys in the tower came into the pits and talked for a while, he said him and the other 2 guys in the tower had been talking about my falcon during the runs and had guessed I was running a 260 v8. He was suprised to see the six. after talking about my combo and lack of power off the line he suggested a 2,000 to 2,200 stall coverter.

http://youtu.be/KPYxKJVi-e8

 

[bubba22349]

nice run, too bad that Mopar wasn't there again!

 

[64falconsix]

and the timeslip. the tires are a little bigger and stuck to the track pretty good with the rearend pulling slightly to the right for the first few feet of the run. with the new tires lowered my 60' times by almost 1/10th of a sec.

 

[wsa111]

Good job first time out. A looser converter & get rid of that 260 cam.
Did you ever curve the distributor to pick up the low end??
You did fine for your for your present combination.

 

[64falconsix]

Bill, did not recurve the distributor yet but added a little more initial advance. I was going to keep the stock convertor but do realize if I want to pull of the line I need to find something in the 2,000 rpm stall range. I hear alot about the 260 comp being soft but would be interested in seeing a lobe map of the 260 comp and the 264 clay smith to see the difference. since the duration@.050 and lift is comparable the ramp speed or duration at max lift must be different. Bill how much of a difference is there between the 2 in power torque and rpm range , the 264 /110 in dyno tests I have seen seems to show peak hp and torque around 4,800 rpm, I would have guessed peak torque to be lower for a cam of that size. I was even suprised to see the mild isky in your build peak power at the rpm it did .I want something that will pull to 5,400 rpm max with a strong mid range but still work with the c4 with a mild stall converter and 3.20 or 3.50 gears and still cruise well as this is only a weekend street car with an occasional 0 to 70 blast or very rare trip to the drag strip. was thinking the aluminum CI head with the 264/110 ... 1.6 roller rockers, 9.5 to1 compression and about a 2,000 rpm stall convertor. what are your thoughts?

 

[wsa111]

You have to re-curve the distributor. Just advancing the timing will help the low end, but your total advance will be way too high.
Unless you plan to install a 2800 rpm converter you better run the 112 L/C 264.
Also get some of mike's 1.65 roller rocker arms.
You need at least a 2200-2400 stall converter if you just want to street drive it.
Would advise an external trans oil cooler.
If you go to the CI head you need flat top pistons to get your compression to at least 10.5 to keep your cranking compression up. Still not a bad idea with the iron head & a little more duration.
Get your wallet out if you want more.
I shift at 5900 rpms with the mild Isky because with my custom Holley carb it still pulls strong upstairs.

 

[64falconsix]

Thanks Bill, what should I shoot for as far as total advance , and what rpm should I be seeing full advance? what is the best method to check for both, I have a good dial back timing light.wow 5,900 rpm shift point ,I do'nt shift over 5,400 because I was concerned about the durability of the cast pistons and cast rods even though I run ARP rod bolts, what were you peak torque and HP rpms , Also what spring pressure are you running to hit that rpm without valve float, I use the sealed power vs733 spring with 90# closed and 280# open, I could not see them on the dyno sheet on my computer it was a little blurry but looked like peak torque in the mid 4s and peak HP in the low 5s.