Re: back from the dyno!
[Re: Biginchmopar]
#1372546
01/22/13 04:14 AM
01/22/13 04:14 AM
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Joined: Aug 2003
Posts: 43,744 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,744
Bend,OR USA
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Quote:
Nice build and congrats. I would turn up the oil pressure a bit if it was mine. If you spin it any higher I would make sure you have around 70 PSI.
Good point I like to see 10 lbs per 1000 RPM, so at 7000 RPM I like to see 70 lbs. If the bearing clearances are tight, .002 to .003 on the rods and .0025 to .0030 on the mains with non full groove mains that would be the minimum with thick oil like 20W50WT, if the clearances are looser and your using thin oil, 5W30 or thinner then you can get away with a little less pressure like 65 lbs at 7400 RPM, I do
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: back from the dyno!
[Re: topside]
#1372549
01/22/13 08:00 PM
01/22/13 08:00 PM
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Joined: Jul 2006
Posts: 4,179 California
mickm
OP
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OP
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Joined: Jul 2006
Posts: 4,179
California
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Quote:
Mick, my Hemi RR runs Radial T/A 295s on 8" wheels; it's been 120 with zero issues, but like I alluded to in my earlier reply, the car just blows them off in 1st & 2nd; and that's with only about 540HP/500TQ. I ran M&H DOTs on it once and that improved "forward progress". Could still torch 'em a bit with an aggressive launch on the street.
it's good to hear that, and will help make the decision. i do want more tire under there, (and will need it!), but i don't want to drop a whole bunch of money on wheels and tires just to find out it won't work, for whatever reason.
what year is your car?
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Re: back from the dyno!
[Re: mickm]
#1372551
01/23/13 10:23 AM
01/23/13 10:23 AM
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Joined: Jan 2003
Posts: 13,496 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,496
Marion, South Carolina [><]
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Mick...what heads are on the motor? Any port work? Compression ratio? Vanke mod to the manifold?
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 4 speed, Dana 60 '71 Demon 340, no drivetrain, on blocks behind the barn '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: back from the dyno!
[Re: an8sec70cuda]
#1372552
01/23/13 02:23 PM
01/23/13 02:23 PM
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Joined: Jan 2011
Posts: 4,785 Utah and Alaska
astjp2
master
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master
Joined: Jan 2011
Posts: 4,785
Utah and Alaska
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I would like to hear more about your setup, I have a similar combination and am hoping to make similar numbers. Tim
1941 Taylorcraft 1968 Charger 1994 Wrangler 1998 Wrangler 2008 Kia Rio 2017 Jetta
I didn't do 4 years and 9 months of Graduate School to be called Mister!
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Re: back from the dyno!
[Re: astjp2]
#1372553
01/23/13 03:24 PM
01/23/13 03:24 PM
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Joined: Nov 2009
Posts: 520 New Zealand
nz383man
mopar
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mopar
Joined: Nov 2009
Posts: 520
New Zealand
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Nice With the cam you have chosen & the torque numbers posted I would think it will be quite drivable & well mannered for an engine with over 700 HP Do you have flow numbers you are willing to share, porting etc. Thanks for posting your info.
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Re: back from the dyno!
[Re: mopardwh]
#1372555
01/23/13 05:01 PM
01/23/13 05:01 PM
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Joined: Jul 2006
Posts: 4,179 California
mickm
OP
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OP
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Joined: Jul 2006
Posts: 4,179
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as i stated in the first post, everything came from tim banning at FHO. here are the specs of the engine:
- mopar mega block - 4.5" bore 4.25" stroke - CP pistons, 10.25 - 10.4 CR depending on the calculator - .027" cometic head gasket - 7.1" rods, don't know the brand, tim has them made up - ohio crank - cam specs listed earlier, comp cam, crower lifters, solid roller on more of a hydraulic grind - stage V heads, intake flows ~435 at .800, completely worked over by tim - i don't know the brand of the rocker gear, but came from tim - stage V dual 4 intake - dual 650 edelbrock thunders - mopar electronic distributor and MSD
that's the basics off the top of my head.
i'm jazzed, can't wait to get it in the car!
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Re: back from the dyno!
[Re: mickm]
#1372556
01/23/13 05:35 PM
01/23/13 05:35 PM
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Joined: Jan 2011
Posts: 4,785 Utah and Alaska
astjp2
master
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master
Joined: Jan 2011
Posts: 4,785
Utah and Alaska
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It looks like I am pretty close to your combination, I am 9.5-1, similar cam, heads are similar, I had less flow at .8 but I am still good at lower lifts at [Email]367@.6[/Email],(do you know how much they flow at .600? I am using 770 quickfuel vacuum carbs. Should be about the same power. tim
1941 Taylorcraft 1968 Charger 1994 Wrangler 1998 Wrangler 2008 Kia Rio 2017 Jetta
I didn't do 4 years and 9 months of Graduate School to be called Mister!
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Re: back from the dyno!
[Re: astjp2]
#1372557
01/23/13 06:00 PM
01/23/13 06:00 PM
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Joined: Jul 2006
Posts: 4,179 California
mickm
OP
master
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OP
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Joined: Jul 2006
Posts: 4,179
California
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Quote:
It looks like I am pretty close to your combination, I am 9.5-1, similar cam, heads are similar, I had less flow at .8 but I am still good at lower lifts at [Email]367@.6[/Email],(do you know how much they flow at .600? I am using 770 quickfuel vacuum carbs. Should be about the same power. tim
i'll see if i can dig up the flow numbers.
i'd be interested to see the difference the carbs would make. of course, would only know something for sure by putting them on my setup, but that is a good jump in CFM.
i've heard many people say that the 2X4 setup is leaving horsepower on the table, even with the stage V manifold. i've never seen numbers though.
but hey, in my book, hemi's have 2 4's
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Re: back from the dyno!
[Re: mickm]
#1372558
01/23/13 06:12 PM
01/23/13 06:12 PM
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Joined: Aug 2003
Posts: 43,744 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,744
Bend,OR USA
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Quote:
Quote:
It looks like I am pretty close to your combination, I am 9.5-1, similar cam, heads are similar, I had less flow at .8 but I am still good at lower lifts at [Email]367@.6[/Email],(do you know how much they flow at .600? I am using 770 quickfuel vacuum carbs. Should be about the same power. tim
i'll see if i can dig up the flow numbers.
i'd be interested to see the difference the carbs would make. of course, would only know something for sure by putting them on my setup, but that is a good jump in CFM.
i've heard many people say that the 2X4 setup is leaving horsepower on the table, even with the stage V manifold. i've never seen numbers though.
but hey, in my book, hemi's have 2 4's
I would like to build a motor with the Stage V heads and dual 4 intake with a set of either 750, 850 or 950 Holley D.P. to see what it would make I would rev it to where it made peak HP and then above that by 500 RPM to see how bad it fell off or flatten out
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: back from the dyno!
[Re: Cab_Burge]
#1372559
01/23/13 06:22 PM
01/23/13 06:22 PM
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Joined: Jul 2006
Posts: 4,179 California
mickm
OP
master
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OP
master
Joined: Jul 2006
Posts: 4,179
California
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Quote:
I would like to build a motor with the Stage V heads and dual 4 intake with a set of either 750, 850 or 950 Holley D.P. to see what it would make I would rev it to where it made peak HP and then above that by 500 RPM to see how bad it fell off or flatten out
it would be interesting to see what it would do with the different carb setups, but i'm not sure i'd be brave enough to put my engine in the hands of the guy who uses the "crazy me" icon as much as you do!
i think we're talking 7-7500 before we start to see it drop off. all in all i have to assume this engine would rev that high, but i guarantee i'm never going to find out!
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Re: back from the dyno!
[Re: mickm]
#1372560
01/23/13 07:27 PM
01/23/13 07:27 PM
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Joined: Oct 2003
Posts: 3,698 NE Oklahoma
Von
master
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master
Joined: Oct 2003
Posts: 3,698
NE Oklahoma
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Quote:
i have 275/60's on a 10" rim. i was thinking of trying 295/60's on an 8" rim,
I have 295/65 ET radials on a 8 inch rim. No wobble that I know of??
72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72.
Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.
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Re: back from the dyno!
[Re: mickm]
#1372561
01/23/13 11:15 PM
01/23/13 11:15 PM
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Joined: Jan 2011
Posts: 4,785 Utah and Alaska
astjp2
master
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master
Joined: Jan 2011
Posts: 4,785
Utah and Alaska
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Since your cam is in the .600 range, that is where the flow numbers count, at .800 is not much help if your cam does not have that much lift. Tim Quote:
Quote:
It looks like I am pretty close to your combination, I am 9.5-1, similar cam, heads are similar, I had less flow at .8 but I am still good at lower lifts at [Email]367@.6[/Email],(do you know how much they flow at .600? I am using 770 quickfuel vacuum carbs. Should be about the same power. tim
i'll see if i can dig up the flow numbers.
i'd be interested to see the difference the carbs would make. of course, would only know something for sure by putting them on my setup, but that is a good jump in CFM.
i've heard many people say that the 2X4 setup is leaving horsepower on the table, even with the stage V manifold. i've never seen numbers though.
but hey, in my book, hemi's have 2 4's
1941 Taylorcraft 1968 Charger 1994 Wrangler 1998 Wrangler 2008 Kia Rio 2017 Jetta
I didn't do 4 years and 9 months of Graduate School to be called Mister!
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Re: back from the dyno!
[Re: mickm]
#1372562
01/23/13 11:47 PM
01/23/13 11:47 PM
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Joined: Aug 2003
Posts: 43,744 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,744
Bend,OR USA
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Quote:
Quote:
I would like to build a motor with the Stage V heads and dual 4 intake with a set of either 750, 850 or 950 Holley D.P. to see what it would make I would rev it to where it made peak HP and then above that by 500 RPM to see how bad it fell off or flatten out
it would be interesting to see what it would do with the different carb setups, but i'm not sure i'd be brave enough to put my engine in the hands of the guy who uses the "crazy me" icon as much as you do!
I still cringe (butthole still puckers up real tight) every time one of my new motors or a customers motors goes to full throttle against the water brake on the engine dyno the first cuople of times It is not easy to not cringe at the sound of a motor being held at WOT at 3500 RPM before the pull starts I have hurt one of my motors on a engine dyno tuning it, I had a set of 1050 Dominators on a tunnel ram and one of the secondary power valve block off plugs had come loose a little, it wouuld read real rich at WOT on the AFR and the motor kepting gaining power by leaning out the jetting, I had jetted a pair of stock Holley 9375 down by 10 jet sizes, I knew something was wrong but I wasn't smart enough back then to stop the jet changing and go looking for the real problem I ended up burning up three pistons during the last pull My message is you have to learn to trust your feelings, when your mind is telling you something is not making sense there is usually a reason for it,(feeling that way) you should listen to your mind and stop what your doing and go looking for what is really wrong BTW, I have a new 4.490 rough bore World hemi block and a new 4.300 Hemi stroker crank sitting here that belongs to a customer who wants to build a big power pump gas street Hemi for his 1970 Challenger, it will end up with the street Stage V heads, 2x4 Stage V intake and several sets of those carbs on it, if the economy ever recovers enough so he can finish buying the rest of the parts for his build That combination should make right at 547 C.I. and I'm hoping for 1.4 HP per C.I.(767 HP) off of his build Similar torque also
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: back from the dyno!
[Re: astjp2]
#1372564
01/24/13 02:52 AM
01/24/13 02:52 AM
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Joined: Jul 2006
Posts: 4,179 California
mickm
OP
master
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OP
master
Joined: Jul 2006
Posts: 4,179
California
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Quote:
Since your cam is in the .600 range, that is where the flow numbers count, at .800 is not much help if your cam does not have that much lift.
yup, you're right. i'll see if i can find the flow chart.
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