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The 340 just keeps making more power! Best slips yet

Posted By: 440charger500

The 340 just keeps making more power! Best slips yet - 04/24/13 02:31 AM

So first couple passes out this year with new dart and 340 have been good. Started in 11.80's @ 112mph. From there we went up 2 jet sizes and and dropped plugs heat range from RC12YC to RC9YC. 340 responded well and ran a tenth faster. So last weekend we set timing up from 35 degrees to 37 and installed the caltracs mono leafs (caltrac bars already installed). First pass out was a 11.71 @ 114mph and then I got these 2 timeslips.

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Posted By: 440charger500

Re: The 340 just keeps making more power! Best slips yet - 04/24/13 02:37 AM

Yellow slip doesnt have all increments because an altered took out the sensors before my pass. Bummer cause Id like to see the all numbers. Heres the 340! Enjoy

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Posted By: 70Dart499

Re: The 340 just keeps making more power! Best slips yet - 04/24/13 03:07 AM

Mind sharing your combo? I've got a 340 coming together right now, and I'm curious to hear what your combo is.
Posted By: MR_P_BODY

Re: The 340 just keeps making more power! Best slips yet - 04/24/13 03:18 AM

Thats good... but dont stop there.. if you jetted up
2 sizes and it picked up then go 2 more till your MPH
starts to drop then back up 1 size... then after you
find the sweet spot then advance the timing some but
watch your plugs..... good job
Posted By: SpareParts

Re: The 340 just keeps making more power! Best slips yet - 04/24/13 03:25 AM

Not too shabby, have you tried 34° timing yet? All our SB's love it. Making a timing and spring change together you really can't credit either. Just my .02
Posted By: MR_P_BODY

Re: The 340 just keeps making more power! Best slips yet - 04/24/13 03:34 AM

Quote:

Not too shabby, have you tried 34° timing yet? All our SB's love it. Making a timing and spring change together you really can't credit either. Just my .02



I would have said 34* or so also but with my last
SB it liked 39*... we didnt go higher.. I said 39*
was far enough... so test, test and test... dont ever
think that should be it...........JMO
Posted By: 440charger500

Re: The 340 just keeps making more power! Best slips yet - 04/24/13 03:42 AM

Quote:

Not too shabby, have you tried 34° timing yet? All our SB's love it. Making a timing and spring change together you really can't credit either. Just my .02



Timing started @ 35. I dont think the mono leafs changed et much because 60fts stayed the same. I was looking more at the mph for the hp increase. 112mph then 115 now, same DA @ 1000 ft.
Posted By: ProSport

Re: The 340 just keeps making more power! Best slips yet - 04/24/13 11:57 AM

Good deal! I started out with a 71 scamp that had a mild 340 in it, ran 11.70s at 115 at 3200 pounds, lots of fun and very streetable!
Posted By: 383man

Re: The 340 just keeps making more power! Best slips yet - 04/24/13 04:20 PM

Always a good feeling to go faster every time out. Ron
Posted By: 440charger500

Re: The 340 just keeps making more power! Best slips yet - 04/24/13 10:24 PM

Quote:

Mind sharing your combo? I've got a 340 coming together right now, and I'm curious to hear what your combo is.



340 .030 trw slugs fly cut for closed chamber heads
ported eddys 62cc with 10.34to1 comp
Lunati voodoo solid
RPM Intake with 1" wilson open spacer
750 HP Carb
headman Hustlers
3200lb 67 Dart
Posted By: 70Dart499

Re: The 340 just keeps making more power! Best slips yet - 04/25/13 01:18 AM

Thanks, that's very similar to my combo good luck with it.
Posted By: Cab_Burge

Re: The 340 just keeps making more power! Best slips yet - 04/25/13 07:17 AM

Which track was that at?
Posted By: 440charger500

Re: The 340 just keeps making more power! Best slips yet - 04/25/13 08:43 PM

Redding Dragstrip. Oldest track around
Posted By: 74DusterP457

Re: The 340 just keeps making more power! Best slips yet - 04/25/13 11:05 PM

Sounds like you've got it dialed in pretty well.
What converter, gear, tires?
Experiment with squirters and acc pump cams. Tune for best 60 ft, then jet for MPH

Paul
Posted By: 440charger500

Re: The 340 just keeps making more power! Best slips yet - 04/26/13 04:50 AM

its got a spec-rite 4000 converter with 4.56's out back. I think the squirters are pretty good put 37's in & have pink pump cams. I think that I really need to play around with the caltracs & QA1's, I would like my 60fts in the upper 1.50's.
Posted By: MR_P_BODY

Re: The 340 just keeps making more power! Best slips yet - 04/26/13 05:00 AM

Quote:

Quote:

Not too shabby, have you tried 34° timing yet? All our SB's love it. Making a timing and spring change together you really can't credit either. Just my .02



Timing started @ 35. I dont think the mono leafs changed et much because 60fts stayed the same. I was looking more at the mph for the hp increase. 112mph then 115 now, same DA @ 1000 ft.



Actually if the MPH went up you are making more power
so the 60' should have dropped some if it was hooking
up right... like I said before.. keep going fatter
till your MPH drops
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