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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.

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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

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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.

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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

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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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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

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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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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

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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

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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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i have 275/60's on a 10" rim. i was thinking of trying 295/60's on an 8" rim,

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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

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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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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

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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!

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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

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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.

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