Six-Pac Stroker. Info for Set-Up Needed. Jetting etc:

Thanks for the chat guys. I only occassionally wind it into the 6800 area if I wanna screw up Boy-Racers (Brains) in their Jappa's by takin the odd one for a ride.
At the drags, i am some-what into 3rd gear,maybe half-way. It would be well in the 11's, but this is a car i can just loaf around in,&,once moving at 10mph will blow the socks off most comers.
Quite happy with tall gears, afterall, low gearing only has the punch in that first instant.
In low, with full tank of juice & 60ft of 5/8th chain in the boot,& the 850 on, she'll srew sideways every time even if i accelerate smoothly & then at say 50-60mph push that lasy third of throttle. Tires are 255x45x17 ZR-Sumitomo's.

Oh Yes! Forgot to answer the fuel-pump question.
Yes, its a Mallory 140 with 3/8th pipe.
I also have 1-7/8th headers, all mandrel bends.
As for the sound,at the drags everyone raves about how damn crisp & strong it sounds.
Lots of people come & tell me its the best sounding car there. I sit on 7000-7200 doing my burn-out for them.

If your running 12.0's with a 2.76 rear, you have nothing to complain about!
Why rev the engine over 6K if it does not do anything for performance?
With a single 4 setup, a Holley HP 950 has made huge differences over 750 and 850's with the strokers I have been involved with!
IMO, you picked a pretty good all round cam for a street car, I have never seen one with that much vac at idle, wish mine did.
From all accounts, the Stealth heads run pretty close out of the box to the Eddy heads, and they dont flow enough for your combo to make max hp and probably why it does not make any more power
over 6k. If you shifted around 5800 you would probably run better times at the track.
Here is my combo for an all around street car.
493 stroker, 10.54-1 comp. Comp custom solid from Dwayne Porter, Porter racing heads. Specs off top of my head, 254/258@50, .582/.597 on 108*.
Out of the box Eddy's with Isky 8005a springs. Hooker S/C 2" headers with 3" full(quiet) exhaust.
Torqueflite trans with Dynamic tight 10" 3600 stall converter. Factory 6 pack, cold intake, staggered jetting on ends with QFT jet plates 78/84, center carb 65 mains, I believe I drilled the accel pump nozzles to .035 and used the red accel pump cam in the #2 position, stock 30 cc. pump. My vac in gear at idle was around 7" and I ran a 3.5 power valve. I am also at sea level. 69 RR with a/c and a 6 point bar, 4120 lbs w/driver.Dana 60 w/3.54 gears Best run through mufflers on 30" tall slicks, 11.48@117, average times through the muffs on Goodyear Eagle GT 2 street tires, 11.78@115, 60 ft. in the 1.80 range, but on a well prepped track, 1.74 was common. Best et's were found to be with a shift point of 5800 rpm. My cam was a little big, but when Dwayne spec'd it out, I was planning on having the heads ported which I have since done. Unfortunately, I had a garage fire that burned up both of my Mopars and the whole shop before I had a chance to run the new heads. I won't know until next spring how everything will do when I put the new car togeather, but I think it is safe to say you could benefit greatly from some proffesional porting on your heads. Also be sure you have a good fuel pump so you don't run out of fuel on the big end. With your mph, no doubt you have all the potential for low to mid 11's in street trim, a bit more gear would sure help. Hope this helps!

Hey! Thanks for the info. I have played around short-shifting gears etc: & where i am is the fastest & most consistant i can do. I do tend to win most races, but i'm only there to have a bit of fun & 'cos people love wathing my car.
Anyway, this jetting; which sides do the 78's go in?
I won't bother porting these heads as i have some Indy SR's sitting there as well, but just can't be bothered at the moment building another set of headers. I'll get round to it before Xmas though.
Any other suggestions would be much appreciated.
I'm 52 & been running worked 440's since '87 & have good understanding mechanically & do all my own work;susspension;brakes;diff;gear-boxes etc:
I use to be an incredibly hard road-driver, but they would jail me if they caught me today; now i just have memories of what use to be.
Yee! Harrr!

I'm so Sorry as well for the bereavement of two Mopars. Bet that was like a death in the family.
Trouble is; its not just the money, but all the work you put in, & then its also two more beloved "MOpars" (tears).
Mike.

I am running 4.5 power valve, 65 jets in center, and 78s on the passenger side on outboards with 83s on drivers side. I am also using Promax metering plate for the center and the jettable plates for the outboards.

Thanks for that.
I guess, since staggered jetting seems to be the norm; there must be a fuel distribution problem in manifold.

I'll have to check my 4 corner jet notes:
Don't remember a stagger.
dyno'ed 650lb-ft around 3800
tops about 5400

H beam
forged Ross
Edel heads
1.75 header-> 3" X
.5" lift custom cam
700+ rpm idle
493->11" centerforce->Hemi 4 spd->742 8.75 3.55
(Plans on a 3.54 Dana)

If you want info let me know, I'd have to get it.

Limelight440. Michael, please give me what you can in settings. Even the cam specs,if your open to sharing as i don't mind buying another cam for improvement.
650ft lbs is mighty fine bum shifting grunt.
I would really love to get this Six-Pac going, so all info would be gladly appreciated!
Regards, Mike.

If you're interested in power a little lower in the rpm range (681hp@5500RPM & 685TQ @ 4500rpm), I'd be happy to share my cam specs with you. Use even a bigger cam the numbers would only go up from there, but at the expense of some low end...

Michael; I have emailed your Yahoo account. Thanks for the generosity.

I will have to get my notes, I will post tonite.

I must correct my self minorly, as I looked at
my dyno numbers again:

643lb-ft was @ 4000
548hp was @ 5100 but only hicups 10hp to 5550

This is an excel chart that I made from
the dyno print out numbers. Unfortunately the full run
was lost but I do have the print out from the out-boards opening (2800ish) on.

post the jetting if you get a chance.

Michael; this is so good of You! Thank You so much. I don't know if you received my personal email; i was asking for your cam specs if you have them available. Also; what state are your heads; Std: or some,to major port/bowl work.
My email is big-mike@xtra.co.nz if you wish to keep specs quite.
Also, anyone who wishes to write direct, this is fine by me. Welcome the chat.
Regards, Mike.

2x 62 & 4x 93

Edelbrocks are standars 84cc (no dress work)
compression I'm told ended up 10.3:1
although I thought it would have been a little higher. I keep meaning to do a hot crank over.

Cam is from Cam Techniques of Sarasota Florida 941 727 5552
int & exh lift are .504 at valve
304deg (240@ .050")
104deg intake centerline installed 4 deg advanced
I can give the Cam Techniques Grind Number to order if you want it.

Mike:
I dont' know what my email is listed as, but rest assure
you can find me at chesna.mi@neu.edu

Mike

Mike.
Have sent email with car pics.
Hope you receive. Thanks for massive help.

4 93's are stout....

Hi there guys!
No! Your not high-jacking; everyone's comments are welcome.
I suspect SuperWrench is about right. I remember Steve Dulcich doing the manifold test & with the Six-Pac found #84's wre doing the bussiness.
Whats screwing me up is, I jetted with these numbers & #63 centre carb & have the 2ndries opening early, but not bogging, & then i took this set-up off & put the 650-D/P with Weiand Xcelerator on & instantly had more pull & more revs as well.

Hey, Super Gas; I would try #78's on both sides.
I'm gunna borrow a friends "Inovator Gas Analizer" & do some hard acceleration & just see exactly where the mixture is.
Probably a week before i get the time though.
Will post my findings when i do this.

That is exactly what i thought when i changed manifolds.

Is that Inovator Gas Analizer sold by Billy Mays.

We've run two 500 cu in engines w/ the six pac set-ups both a little under 600hp. One used 69 center w/87s outboard, the other 66 center and low 80's ouboard.

I would guess that if you used 64s and 84s you're not to far off, and the not pulling past 6000 might be from something other than jetting.

Right! 1st one, the Analizer,have'nt a clue;but it is instant & broard in readings.
The Hughes Engine site column; funny, i just come to here from reading that very item. [Edited by Moparts - Keep it clean]! does that mean i have to send my manifold all the way there & back.
BBS67, thanks for the coments there. I have all Brand-New Six-Pac,so i guess i better go a huntin!
I may just bite the bullitt & get 1 of Hughes Manifolds as the cost versus the next 20 yrs i hope to still have the car tells me to forget cost & just get whatever it takes to make some serious grunt, but still streetable.
Thanks Guys!
Mike.

I just pulled #7 and #8 plug since those were the easy ones. I am running rich. I have 78 on the passenger side and 83 on the drivers side. What number should I go with? I am using NGK-BCP6ES plugs gapped to .45. It is timed at 14 initial and 35 total. I am running aluminum manifold with blocked heat cross over.