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went to mid michigan yesterday
#1278126
08/02/12 09:59 AM
08/02/12 09:59 AM
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Joined: Jan 2007
Posts: 8,037
Mt Morris Michigan
mopar dave
OP
master
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OP
master
Joined: Jan 2007
Posts: 8,037
Mt Morris Michigan
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best the 408 could do was a 10.65@127.6 in 83* weather. 60 was 1.53. just could'nt get the car to 60 any better with shock adjustments. first pass was 10.66@126.9-1.52 60. went down 2 on the jetting and went 10.69@126.5-1.54 60. went up 1 and went 10.73@126.6-1.59 60 spun. timing went from 32* to 36* and went 10.65@127.6-1.53 60. went up two more on jetting and ran 10.66@127.6. jet changes made little differences and timing got 1 more mph. car went straight so i did'nt touch the cal-trac adjustment. 60'ed better on ss springs with a 1.49 best.
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Re: went to mid michigan yesterday
[Re: mopar dave]
#1278127
08/02/12 10:15 AM
08/02/12 10:15 AM
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Joined: Dec 2005
Posts: 1,495
Shelby mi.
JAKE68
pro stock
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pro stock
Joined: Dec 2005
Posts: 1,495
Shelby mi.
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For caltracs you need atleast 4 in. of front travel looks like you have about two. Lower front and realign to give it more travel.
JAKES AUTOMOTIVE
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Re: went to mid michigan yesterday
[Re: mopar dave]
#1278129
08/02/12 12:44 PM
08/02/12 12:44 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
i measured 6" on front end travel. tubular control arms with hyme joints and calvert 90/10's. stiffening rear shocks a click at a time had no real effect.
You might need to soften the rear shocks for more
extension to plant the tires harder... bad tracks..
softer... good tracks ... stiffer
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Re: went to mid michigan yesterday
[Re: mopar dave]
#1278131
08/02/12 05:58 PM
08/02/12 05:58 PM
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Joined: Dec 2005
Posts: 1,495
Shelby mi.
JAKE68
pro stock
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pro stock
Joined: Dec 2005
Posts: 1,495
Shelby mi.
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I dont know how you are mesuring your front end travel, and I am not saying that you are wrong but I looked at your vidio 10 times with soemone else also looking on and it sure looks like it only moves a couple of inches.
JAKES AUTOMOTIVE
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Re: went to mid michigan yesterday
[Re: mopar dave]
#1278133
08/03/12 12:35 AM
08/03/12 12:35 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
well maybe i'm not measuring correctly. at static ride height i measure between the bottom of oil pan and ground,then i jack front up til one tire or both leave the ground and take another measure between pan and ground. i take first measure and subtract from second measure and that figure is my total travel.
Just measure from the fender lip right above the tire
centerline with you in the seat then jack it up and
soon as the tire will start to turn measure it again
at the same point
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Re: went to mid michigan yesterday
[Re: mopar dave]
#1278135
08/03/12 11:02 AM
08/03/12 11:02 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
ok i will remeasure and see what i have.
The reason you measure at the tire centerline is that
anything in front of it will have a ratio(if you
were to measure it at the front bumper it travel
farther before the tire comes off the ground)to
give you a larger number... thats why you need to
do it on the tire C/L(splindle C/L)
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Re: went to mid michigan yesterday
[Re: mopar dave]
#1278137
08/03/12 05:31 PM
08/03/12 05:31 PM
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Joined: May 2004
Posts: 3,210
robin hood country
deaks
master
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master
Joined: May 2004
Posts: 3,210
robin hood country
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My car is 12.7.1 and i run 50-50 pump 97 and 112 race fuel, my old motor was same comp as yours and i used the pump 97 only with .039 quench.
Mick
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200#
best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft
best 60ft 1.36
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Re: went to mid michigan yesterday
[Re: deaks]
#1278138
08/03/12 05:45 PM
08/03/12 05:45 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
My car is 12.7.1 and i run 50-50 pump 97 and 112 race fuel, my old motor was same comp as yours and i used the pump 97 only with .039 quench.
Mick
Still gonna matter what cam is in it.... check the
cranking pressure
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Re: went to mid michigan yesterday
[Re: mopar dave]
#1278141
08/04/12 01:06 AM
08/04/12 01:06 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
cranking pressure was 185#/cyl avg. not sure what octane i need but vp110 and shell 93 was clearly too much. tires are brand new. i will have to do some body work to get a 28" tire on there without rubbing. never rubbed with the ss springs but a 28" tire does with the cal-tracs.
at this point i would be better off putting the ss springs and the 28" tires back on and sell the cal-tracs,i 60 ed better.
At 185 you can run premium by it self but you want
to make sure its good quality and not all over the
place on octane.... I know when I went from 112 to
110 I picked up with no other changes
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Re: went to mid michigan yesterday
[Re: mopar dave]
#1278143
08/04/12 02:05 AM
08/04/12 02:05 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
thanks mike. i did have one cylinder that was 195 psi.
If that one was a END cyl I wouldnt worry much BUT I
would try to keep the engine cooler with a lower stat
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Re: went to mid michigan yesterday
[Re: mopar dave]
#1278145
08/04/12 10:11 AM
08/04/12 10:11 AM
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Joined: Oct 2003
Posts: 11,684
W. Kentucky
justinp61
I Live Here
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I Live Here
Joined: Oct 2003
Posts: 11,684
W. Kentucky
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Quote:
i'm now thinking the 50/50 mix of 93 shell and vp110 killed it. i'm not convinced it needed any race fuel with 11.3:1 and .036 quench.
My aluminum headed 340 was 11.2-1 with .039" quench and ran on pump 93. I tried 110 race gas in it one time and it slowed down.
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