Final TNT for season at local track

[6667fan]

Fortunately there was a rescheduled test n tune Friday. So many rain outs here in the Northeast this summer/fall. Was going to go two other times this month but Ma Nature said forget it.

Managed a new low ET even with a poor 60’. Went 10.68, mph of 125.71. 60’ was only a 1.56. Car has 60’ 1.46. Problem was my line lock was wonky. Only one good burnout all day, car would just slide. The good burnout netted a 1.52 on a different pass.  So I feel car has a 10.5 in it but won’t find out this year.

[Nightmist66]

Awesome! I agree, with that mph, it should do a 10.50. Making some good power...

[Stangman]

Sweet what track in the northeast.

[6667fan]

Joe, it’s Lebanon Valley in New York. Kinda a straight shot out of Western Ma for me, (1.5 hours one way). Next closest track is an hour more, going east instead of west into New Hampshire.

[Posi67]

In spite of what "should" be true there is no rhyme or reason to ET/MPH/ 60' relationship in my experience. Some of my best ET's have come from less than stellar 60' times. I blame that on the driver however. Start line spin usually equates to a slightly higher MPH because you effectively have taken a running start to the finish line.

It is a given that you can't MPH without HP and looking at your setup I'd be expecting something in the 130 range. My stuff is very similar although I suspect my car is lighter but even my 390 runs 132 MPH and it's not at your HP level. Nonetheless, good that you got some last runs in and went home in one piece. One question, what back tire do you run?

[6667fan]

Dale, the slicks are a 29 x 10.5 Hoosier. D06 compound. Run them anywhere from 13.5 - 12.5 psi. Car is is 3650 with driver and 1/2 tank. I recall you sharing the relationship,( or lack thereof), between mph and ET in the past when I lamented that the car is not quick enough for its mph. Most of that is the driver here.  So I’m looking for help from the equipment, lol. Figured a decent 60’ would at least find me a tenth off the ET.

This trip was the first time out with my Viking DAs in the front. Wheelies are tiny now, front end more under control. The old 90/10s had the car pogoing one through third. I had the rebound setting on 4, then 2. Might try 0, the 90/10s were very good on extension but the compression was laughable on my car.

Thanks much for weighing in.

[Stangman]

Would like to go to that track next year. I’m sure some of my buddies will make the trip. I will let you know. Maybe I will meet you there.

[6667fan]

That would be awesome Joe. That would double or maybe triple the number of FE powered machines there at one time, lol.

[manofmerc]

As the title says 6667 how did you do that .My comet is tight with 29x9s .Just asking Because I have been fighting traction problem all year with my 502 (460 based) comet .I just got my convertor back from ATI it was loosened up .Thanks and good results for you keep at it young man!!!Doug

[351crules]

what is your rear suspension set up like? trap rpm? i do agree the mph should be higher with the hp. do the rpms drop a lot during shifts? what rpm was peak power?

[6667fan]

Doug, the 10.5s only fit with a rear spring relocator kit and judicious slicing of the inner fender well and the outer inner wheel lip. The outer lip is not rolled, just relieved along with the wheel house trim. On the inside the snubbers and perch were excised back to the inner well. The rims are 15 x 10s with a 5.5” backspace. The Strange housing is 1.5” narrower than stock.

351crules, the trap rpm is 7K and the shifts are at 6800-6900 Peak power is at 6600. Without powershifting the Rs drop bit but have to check logger to see by how much. Engine is tired, not likely 630+ hp at this point. That value came from a fresh build on a numbers friendly dyno.
The rear set up is Caltrac bars with their split mono leafs. Also their 9 way adjustable shocks.

[Jb427]

I thought more people would be using a drag radial these days 275 50/60 15 can fit them on 8 to 10 inch wide rim. 275 on a 8 inch rim should fit under stock diff if you got the right rim back space

[475fetoploader]

I was going to throw my 2 cents in, and tell you about my 295/65/15 that fits snug, but fits. I have ladder bars though. So all the issues caused by leaf springs, aren’t there.

[6667fan]

Tried drag radials early on. This driver could not make them work with even low rpm clutch dumps. If I had a two pedal car I would try them

[Rory428]

Concerning "drag radials", I am not aware of anybody that has been happy with them on a clutch car with some power, and hard launches. Dropping the clutch on a stick car is a whole different thing than an automatic. I do know some guys that have tried radial drag slicks with a stick, they may get a good run now and then, and the next time, it blows the tires off on the launch. Radials seem to work very well on a car that dead hooks, but thats not how a clutch car usually works best. A clutch car usually wants a revolution or 2 on the launch, and radials do not recover as well as a bias slick does.

[Stangman]

.drag radials in general aren’t for stick cars. They don’t pedal well either when they loose traction you almost have to get off all the way and start again.  I would stay with slicks for the 3 pedal guys.

[manofmerc]

I guessed that you had those springs moved .Somehow I am determined to get my car to work with those 9x29s .My loosened up convertor didnt help much either .So I plan to go back to some mickey thompson tires .I might consider a gear swap .I currently have 4.10s maybe a 3.90 or 3.70 gear is in my future .Thank you for sharing your info.Doug

[6667fan]

Doug, the guys who get it done with 9” tires have my respect. My car was nothing special originally, ( 2V 390), so I’m okay with cutting it. Once the roll bar was welded in the gloves came off.

I ordered the Strange complete third member 1.5 narrower than stock. I thought that would help with big rubber. It was not really necessary. I had 6.5” back space Weld Wheels and the wheels ended up coming in too far. 5.5” back space works with the Hoosiers which have a healthy section width. But that is with the spring kit getting the leafs away from the sidewall. So it’s a combination of things to get the 10.5s to fit.

[manofmerc]

You know 6667 when I got my 502 installed I had my old mickeys 29.5x9 stiff sidewall and used they worked better than my new 29x9 Hoosiers d06 compound .I tried everthing this past year .Sometimes it would hook 1.46 60 ft mostly NOT.I had the convertor loosened still spinning .In Ga. it is starting to rain I need one more test session before I just buy some new tires .I will go back to mickeys 3056 st.The Hoosiers fit much better but it seems they wont work with my car .Thanks for your info and I am thinking about that moving my spring also but first I will try different tires .Good luck to you Mr. Fairlane .Doug