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Re: Couple Edelbrock Motors on Dyno
[Re: Dragula]
#735908
06/29/10 12:38 PM
06/29/10 12:38 PM
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Joined: Jan 2003
Posts: 8,547
State College, PA
RyanJ
OP
moparts member
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OP
moparts member
Joined: Jan 2003
Posts: 8,547
State College, PA
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Quote:
Quote:
Interesting read, and thanks a bunch for the real world info.  Thanks Ryan!
Ditto....
And one quick question, have you done any 5.7/6.1 stuff? You know the new small blocks nobody is racing yet....I am told they have a great potential, but not a lot of info on them.
No, I really have zero interest in them. I like my LA stuff & have no desire to work on the new gen Hemis, there are plenty of good shops out there specializing in that stuff.
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Re: Couple Edelbrock Motors on Dyno
[Re: RyanJ]
#735909
06/29/10 12:52 PM
06/29/10 12:52 PM
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Joined: Sep 2005
Posts: 12,481
Chino Valley
RodStRace
I Live Here
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I Live Here
Joined: Sep 2005
Posts: 12,481
Chino Valley
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Ryan, thanks for the info! I do have a couple questions: With the heads cut that much, what was done to get the intakes to fit? What are your thoughts on carb sizing after this? Seems that a good 750 should be all a 6500 RPM small block that is not a max effort can use.
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Re: Couple Edelbrock Motors on Dyno
[Re: RodStRace]
#735910
06/29/10 01:10 PM
06/29/10 01:10 PM
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Joined: Jan 2003
Posts: 8,547
State College, PA
RyanJ
OP
moparts member
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OP
moparts member
Joined: Jan 2003
Posts: 8,547
State College, PA
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Quote:
Ryan, thanks for the info!
I do have a couple questions:
With the heads cut that much, what was done to get the intakes to fit?
What are your thoughts on carb sizing after this? Seems that a good 750 should be all a 6500 RPM small block that is not a max effort can use.
Obviously had to cut the intake to match the heads.... I ended up taking .075" off the new SV intake to match the .064" milled heads with a Fel Pro 1213 intake gasket.
Yes a GOOD 750 is usually all you need for a high 500 low 600 HP piece. Keep in mind a 950 HP does not actually flow 950 cfm & a 750 Demon does'nt actually flow 750 cfm.... You just go with what works when it comes to carbs. They are very similar to TQ converters... black magic sometimes.
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Re: Couple Edelbrock Motors on Dyno
[Re: RyanJ]
#735911
06/29/10 01:31 PM
06/29/10 01:31 PM
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Joined: Dec 2006
Posts: 214
Colo Springs, CO
DconD100
enthusiast
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enthusiast
Joined: Dec 2006
Posts: 214
Colo Springs, CO
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Awesome post! I run Eddies that I home ported on my 408. I was wondering if you have any flow numbers from either of the sets you did for these two engines? Just curious to see if the numbers I got on the flow bench we used are even in the realm of reality. (They showed 281 cfm @550 lift, and made 578 horsepower @6200rpm on the dyno) I guess my big question is whether or not stepping up my cam would be a big hp benefit with these heads or not...it's a solid flat tappet 256/260 duration.
Pump Gas Small Blocks Rock!
11.53 @ 116mph E85 408 at 8500 ft da,
3605 pound truck, 3.91s, street driven
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Re: Couple Edelbrock Motors on Dyno
[Re: RyanJ]
#735916
06/29/10 09:20 PM
06/29/10 09:20 PM
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Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
BradH
Taking time off to work on my car
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Taking time off to work on my car
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
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Quote:
... intake manifold supposedly had $800 in "port work" done to it... it looked nice, but was almost all just sand roll work/casting removal.
That doesn't exactly sound like an endorsement. 
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Re: Couple Edelbrock Motors on Dyno
[Re: BradH]
#735917
06/29/10 09:35 PM
06/29/10 09:35 PM
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Joined: Jan 2003
Posts: 8,547
State College, PA
RyanJ
OP
moparts member
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OP
moparts member
Joined: Jan 2003
Posts: 8,547
State College, PA
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Quote:
Quote:
... intake manifold supposedly had $800 in "port work" done to it... it looked nice, but was almost all just sand roll work/casting removal.
That doesn't exactly sound like an endorsement.
I don't know who did it, his first engine builder sent it somewhere & had it done... customer told me he had ran it before & after @ the track & saw no difference... I told him why, because they did'nt actually CHANGE anything, just sand rolled the rough aluminum to make it smooth & look nice. Port match job was nice I'll give them that. Awful lot of $ to sand roll a manifold for looks.
As far as the Tunnel ram question... most guys don't want the hassles of the hood clearance isues, having to buy/tune 2 good carbs instead of 1, linkage/fuel lines are a pain etc. & usually they don't do a whole lot versus a good single 4. I know it's a not a Mopar, but local buddy of mine has a 383 SB GM with cheap set of offshore CNC 23* heads, mild 255 @ .050" flat tappet, 11:1 etc. It's in 2800 lb Camaro bracket car... was running Edelbrock T ram & pair of 850's for last couple years... normally ran 11.18-11.25 @ 119-120. I finally convinced him to try a good single 4 setup, so I found a used Victor Jr for $100, did basic port match & some plenum/runner divider work, threw on a 1" tapered spacer & loaned him my 950 HP.... 10.82 @ 125 instantly. That's @ 3000 DA I think we'll get it into the 60's later this year. Really cleaned up & simplified his engine compartment etc. as well... No lines & linkage running all over the place, no multiple carbs to deal with getting finicky... I'm just not a big multiple carb fan unless it is max effort deal where it needs a T ram.
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Re: Couple Edelbrock Motors on Dyno
[Re: RyanJ]
#735918
06/29/10 10:43 PM
06/29/10 10:43 PM
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Joined: Jan 2003
Posts: 5,875
communist bloc of new jersey
jamesc
master
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master
Joined: Jan 2003
Posts: 5,875
communist bloc of new jersey
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Quote:
So on went the 1050 with a 2" adapter.... was some brand new whiz bang TRC? 1050... looked nice, & as usual with most "pretty carbs" from unknown sources, it would not make a clean pull... 580's power & that was after hour & half of messing with it just to be able to get 1 pull with it.
i never cease to be amazed at how many people go for the shiny anodized parts and snake oil sales pitch. not that stock carbs are all good or can't be improved but the manufactures have a lot more vested in building carbs that basically work out of the box than so many of the backyard shops that continuously ruin a good carb. as you mentioned there's only a handful of shops i would even consider buying a "tweeked" carb from.
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Re: Couple Edelbrock Motors on Dyno
[Re: FlyFish]
#735920
06/30/10 09:44 AM
06/30/10 09:44 AM
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Joined: Oct 2003
Posts: 782
s.e. MI
partsforsale
super stock
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super stock
Joined: Oct 2003
Posts: 782
s.e. MI
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"2nd Motor 340, .030" over 416 CID 4.0" K1 Crank 6.125" K1 H beams Off shelf Diamond 4.07" Flat tops, 1/16 Rings 12.4:1 Compression Moroso 8qt pan Mechanical water pump Bullet Solid Roller 272/274 @.050" .670"/.655" 108 LSA Hughes 1.6:1 aluminum rockers Shady Dell Stage 2 Edelbrocks, 2.02"/1.60" valves Port matched Edelbrock Super Victor 750 Speed Demon" Ryan, for your knowledge and for comparison purposes, I had an eddy headed 416 that ran 10.26@129 in real good air in a ~3100lb. car. Never had the motor dyno'ed but IIRC on the desktop dyno it was ~640hp. Compression was 10.9.1, ran 94 Octane Sunoco pump gas at track and on street. Electric water pump, solid roller cam but don't remember spec's, Comp roller tip rockers (I think they were 1.5:1), heads were ported with 2.05 valves, Victor 340 intake, 2" spacer, and 4150 series 1050 cfm. quick fuel carb. Main differences I see is compression and carb size, just some food for thought
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