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Made some passes w/my 470 stealth headed motor

Posted By: challenger73400

Made some passes w/my 470 stealth headed motor - 02/22/09 01:36 AM

I finally got to make some passes with the 470 stealth headed motor. 12:1 CR solid flat tapet cam and 2800 lbs. Mobile Dragway in only 600ft long and it clicked off a 6.08 with a 1.35 60ft. No tunning done, just back it off the trailor, set the timing and made some passes. I feel there is more in it with some tuning.

Just thought some would like to see some numbers from the stealth heads. I,m happy!
Posted By: WILD BILL

Re: Made some passes w/my 470 stealth headed motor - 02/22/09 01:40 AM

Impressive
Posted By: MR_P_BODY

Re: Made some passes w/my 470 stealth headed motor - 02/22/09 02:06 AM

Cool
Posted By: redruM

Re: Made some passes w/my 470 stealth headed motor - 02/22/09 02:14 AM

congrats
Posted By: B1Fish540

Re: Made some passes w/my 470 stealth headed motor - 02/22/09 02:17 AM

man, that seems really good..congrats! what does that equate to in the 1/4? mid 10s?
Posted By: redruM

Re: Made some passes w/my 470 stealth headed motor - 02/22/09 02:21 AM

should be closer to mid 9s
Posted By: challenger73400

Re: Made some passes w/my 470 stealth headed motor - 02/22/09 02:22 AM

Quote:

man, that seems really good..congrats! what does that equate to in the 1/4? mid 10s?



Depends on what calculator you use. one converted to a 9.71 and the other had it at a 10.24.
Posted By: tjmarcus1

Re: Made some passes w/my 470 stealth headed motor - 02/22/09 02:28 AM

Quote:

should be closer to mid 9s

that was a 600ft. pass not a 660ft. pass
Posted By: B1Fish540

Re: Made some passes w/my 470 stealth headed motor - 02/22/09 02:36 AM

Quote:

Quote:

man, that seems really good..congrats! what does that equate to in the 1/4? mid 10s?



Depends on what calculator you use. one converted to a 9.71 and the other had it at a 10.24.


ah..i was gonna say low 10s but thought i should guess more conservative..lol Thats flyin' is that in a challenger...how heavy?
Posted By: redruM

Re: Made some passes w/my 470 stealth headed motor - 02/22/09 02:43 AM

Quote:

Quote:

should be closer to mid 9s

that was a 600ft. pass not a 660ft. pass



Crap, can't say i've ever heard of a 600 ft track before.
Posted By: challenger73400

Re: Made some passes w/my 470 stealth headed motor - 02/22/09 02:48 AM

Mobile Dragway doesn't have much shut down area so they shorten the track to 600ft. It's a Dakota. Thanks!

Attached picture 5043007-Picture001.jpg
Posted By: wildcargo

Re: Made some passes w/my 470 stealth headed motor - 02/22/09 02:47 PM

I would say that is into the 9s by my 6.38 1/8_10.08 1/4
Posted By: Thumperdart

Re: Made some passes w/my 470 stealth headed motor - 02/23/09 04:05 AM

I guess those heads work........nice numbers for sure.
Posted By: 10 o to go

Re: Made some passes w/my 470 stealth headed motor - 02/23/09 01:48 PM

nice H.P
do you have any flow numbers on the heads???
don
Posted By: cudarex

Re: Made some passes w/my 470 stealth headed motor - 02/23/09 03:12 PM

Very impressive!!
Posted By: challenger73400

Re: Made some passes w/my 470 stealth headed motor - 02/24/09 12:19 AM

Quote:

nice H.P
do you have any flow numbers on the heads???
don



I do not. My machinest said the valve job they come with is good for longtivity but not the best for performance so he narrowed the seat and moved it out, did a three angle valve job and back cut the valves. I then blended his work in, opened the push rod pinch and removed some of the head bolt bosses. I also layed back the lip in the chambers. Scott.
Posted By: Sport440

Re: Made some passes w/my 470 stealth headed motor - 02/24/09 01:03 AM

Quote:

Quote:

man, that seems really good..congrats! what does that equate to in the 1/4? mid 10s?



Depends on what calculator you use. one converted to a 9.71 and the other had it at a 10.24.




At a 6.08 ET at 600ft vs 660ft 1/8 mile you were on track to run a 10.25 1/4 mile to put things into perspective.

6.08 @ 600ft. = 10.25 Approx. 1/4 mile

6.08 @ 660ft. = 9.65 Approx. 1/4 mile

Your combo runs great for what it is, Id be really happy, Your 1.35 60ft is strong

And also from the comments about your heads port work, you know what your doing. Id guess those heads are flowing around 310+ cfm @ .600 0r so mike
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