Re: Upgrage/tuning help
[Re: twayne24365]
#1966417
12/09/15 04:53 PM
12/09/15 04:53 PM
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Joined: Sep 2014
Posts: 4,457 Washington
madscientist
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master
Joined: Sep 2014
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Washington
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Headers are TOO small.
Carb is too small.
Cal Tracs, Slide a Link, Asassin (sp????) traction bars (or similar).
.75 compression is not worth milling the heads to do IMO.
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
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Re: Upgrage/tuning help
[Re: twayne24365]
#1966429
12/09/15 05:24 PM
12/09/15 05:24 PM
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Joined: Sep 2014
Posts: 4,457 Washington
madscientist
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If you screw with it long enough, you can make the SS springs work. I know old school and it is me. But sometimes I just have to step into the 1980's. LOL
What is your shift RPM and camshaft LSA? Just curious.
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
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Re: Upgrage/tuning help
[Re: twayne24365]
#1966470
12/09/15 07:11 PM
12/09/15 07:11 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Romeo MI
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No I dont think the conv is too loose.. if its really 5000 stall.. your shifting at 6400 so the conv isnt bad... dont go with 2" headers.. the 1 7/8 is plenty.. any larger you would just hurt low end torque EDIT Whats the LSA on that cam
Last edited by MR_P_BODY; 12/09/15 07:13 PM.
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Re: Upgrage/tuning help
[Re: MR_P_BODY]
#1966473
12/09/15 07:17 PM
12/09/15 07:17 PM
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Joined: Sep 2014
Posts: 4,457 Washington
madscientist
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Washington
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No I dont think the conv is too loose.. if its really 5000 stall.. your shifting at 6400 so the conv isnt bad... dont go with 2" headers.. the 1 7/8 is plenty.. any larger you would just hurt low end torque EDIT Whats the LSA on that cam 104 is what he posted. I'm ASSuming that's the LSA and not ICL. EDIT: looks like he said "installed" at 104*. I have no idea where Hughes installs their cams, but it is likely that it is ground on a 108 of possibly 106. Hell, now I'm just guessing. To the OP...when choosing a header size for a track car, always look at the lowest possible engine speed and header it for that. Guy who put headers on to incease TQ and HP 2K below working RPM frustrate me.
Last edited by madscientist; 12/09/15 07:31 PM.
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
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Re: Upgrage/tuning help
[Re: madscientist]
#1966475
12/09/15 07:20 PM
12/09/15 07:20 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Master
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Romeo MI
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No I dont think the conv is too loose.. if its really 5000 stall.. your shifting at 6400 so the conv isnt bad... dont go with 2" headers.. the 1 7/8 is plenty.. any larger you would just hurt low end torque EDIT Whats the LSA on that cam 104 is what he posted. I'm ASSuming that's the LSA and not ICL. I assumed that was the installed.. from what little I know Hughs cams tend to be on a wider LSA EDIT Also.. if the SS springs are any good there is no reason for the snubber... that had ONE purpose.. for worn out springs.. if the chassis isnt working right that will be a big issue.. being that your playing 1/8 mile that 1.65 60 isnt good enough.. for every .1 in the 60' you can get a ET better by .15 in the 1/4 so do some math on the 1/8.. but if you have the true 550hp that it should have you should be quick in the 60'.. I have seen a lot of people just forget about the chassis and with all sorts of power never pick up... when I first started working on my car all I did was chassis work.. I picked up just over a 1/2 second in the 1/4 mile.. never even touched the engine ... I've worked on my buddies ford PU which weighs 3900#.. he has about 550 hp and has a 1.42-1.44 60'.. I built him a set of home made Caltracs.. thats on a drag radial
Last edited by MR_P_BODY; 12/09/15 07:37 PM.
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Re: Upgrage/tuning help
[Re: twayne24365]
#1966511
12/09/15 08:13 PM
12/09/15 08:13 PM
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Joined: Mar 2006
Posts: 9,893 MI, usa
dvw
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MI, usa
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I don't buy the headers and carb to small. We've gone 10.80 with 440 + .060", 4.56, 5K converter, cleaned up Eddy heads , 1 3/4" headers, 850 at 3700. But with 12.5-1 Besides compression I'd work with what you have and check the basics, there's more in it. Doug
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Re: Upgrage/tuning help
[Re: twayne24365]
#1966527
12/09/15 08:34 PM
12/09/15 08:34 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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the cam from hughes is ground on a 108 and its installed at 104. and im sure theres plenty left from just the chassis, when the car leaves it sort of jumps then goes, it also has a very slight hesitation, almost like the jut sucks air for a fraction of a second or something...ill try to get a link up so you guys can see what it does off the line That hesitation can be really hurting... what you think is just a short period of time is usually a lot when we are talking .010 of a second or more.. good shocks are a good place to start on a chassis set up.. the best you can afford ![wave wave](/ubbthreads/images/graemlins/custom/wave.gif)
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Re: Upgrage/tuning help
[Re: twayne24365]
#1966535
12/09/15 08:38 PM
12/09/15 08:38 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Master
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Romeo MI
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On that launch.. you can see the front fall a few feet out.. it sure doesnt sound like a 5000 stall conv.... you might want to see how far the front is coming up.. could be topping out and falling ![wave wave](/ubbthreads/images/graemlins/custom/wave.gif)
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Re: Upgrage/tuning help
[Re: twayne24365]
#1966537
12/09/15 08:42 PM
12/09/15 08:42 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
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It has the MP long shocks for the rear Those are not what I call a good shock... you need some adjustment its pretty hard to tune in a chassis when you dont have anything that you can adjust ![wave wave](/ubbthreads/images/graemlins/custom/wave.gif)
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Re: Upgrage/tuning help
[Re: twayne24365]
#1966544
12/09/15 08:56 PM
12/09/15 08:56 PM
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Joined: Feb 2009
Posts: 1,532 off the grid
340B5
pro stock
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pro stock
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off the grid
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Clamp the front of the leaf springs and put the rear clamps that were on back on. Ditch the snubber.
Time for some adjustable shocks(rear first)
Last edited by 340B5; 12/09/15 09:01 PM.
Yeah, it's got a smallblock.
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Re: Upgrage/tuning help
[Re: Monte_Smith]
#1966872
12/10/15 03:57 AM
12/10/15 03:57 AM
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Joined: Jan 2003
Posts: 27,421 Balt. Md
383man
Too Many Posts
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Too Many Posts
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Balt. Md
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Getting the car to launch better WILL help the ETs, but based on MPH and weight of car, it is down on power a good bit from where it should be. That isn't the launch. I agree thats its just down on power some. I use SS springs and the longer Mp shocks and I only run an 850 DP. I do have more cubes but my car is heavier and I run through a full exh. My 60's average in the low 1.50's with a best of 1.50 and I do not use the pinion snubber as it did not help any with the SS springs. I would work on the tune with the combo. I kinda feel the Victor may be a bit much for that combo also. Myself I run the Indy dual plane and thats with 4.30's and a 30 x 9 tire. Good luck with that nice Coronet. Ron
Last edited by 383man; 12/10/15 03:59 AM.
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Re: Upgrage/tuning help
[Re: 383man]
#1967013
12/10/15 01:05 PM
12/10/15 01:05 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Romeo MI
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Whats the timing set to.. it could be way down and that will kill power... my timing slipped after a couple of runs.. that was after I checked the timing but I didnt get the hold down tight and it moved.. I thought I had hurt the engine being that it layed over that much ![wave wave](/ubbthreads/images/graemlins/custom/wave.gif)
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Re: Upgrage/tuning help
[Re: twayne24365]
#1967104
12/10/15 03:08 PM
12/10/15 03:08 PM
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Joined: Jul 2004
Posts: 19,318 State of confusion
Thumperdart
I Live Here
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I Live Here
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State of confusion
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Let me build you a 1050 dommy.......
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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