436" Arrington Head Dyno #'s
#208913
01/30/09 08:31 PM
01/30/09 08:31 PM
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Joined: Jan 2003
Posts: 8,547 State College, PA
RyanJ
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moparts member
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OP
moparts member
Joined: Jan 2003
Posts: 8,547
State College, PA
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Smooth dyno session today.....
4.10" bore non Siamese R3 4.125" Stroke offset ground K1 crank 6" CompStar 2.0" rods Custom Diamonds -28CC dish, 11.1:1 compression Moroso 8 Qt pan SDSS Solid roller 272/276 @ .050" .729"/.729" 108 LSA+4 1.65:1 Jesels Arrington heads, 2.15"/1.60" Ferrea's, ISKY 9985 tool rooms, Comp tool steel retainers. Flow ~360/260 @ .700" Manton 3/8" .145" wall P rods Arrington single 4 cast manifold converted to 4500 flange Ran Quickfuel 1050 & a Pro Systems 1050 both virtually identical power. Liked 33 degrees of timing (heads angle milled to 13 degree at some point in previous life)
Built as a pump gas street motor so no compression or wild cam. Motor turns over with 36.9 ft lbs of TQ ready to run with plugs in it, lashed etc.... Made real good TQ helped by smallish intake. I did'nt go wild on it to keep costs down. I was surprised by how good the TQ was, we pulled it down to 4100 late in day & it was making 540 @ 4100.... Made best of 610 TQ.
We ran it with my 1 7/8" into 2" Dyno headers with 3.5" collectors, & then put on a set of Box stock TTI W2 1 7/8" Headers with 3" collectors to see power difference.... here are the results. First #'s were with the stepped big tubes...
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Re: 436" Arrington Head Dyno #'s
[Re: Streetwize]
#208916
01/30/09 10:36 PM
01/30/09 10:36 PM
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Joined: Feb 2005
Posts: 2,528 Mansfield, Tx
Jacob Pitt
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master
Joined: Feb 2005
Posts: 2,528
Mansfield, Tx
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Thanks Ryan I always look forward to reading your dyno posts. I really like how you don't try to hide anything about the motors.
2013 NHRA D4 Stock Champ #4 in the World IHRA Stock 2x IHRA Div.4 Stock Champ 14x Track Champ All using a Ultimate Converter Concepts converter. Call Lenny today 704-892-6837
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Re: 436" Arrington Head Dyno #'s
[Re: Streetwize]
#208920
01/31/09 12:00 PM
01/31/09 12:00 PM
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Joined: Jan 2005
Posts: 3,635 Oakland, MI
dizuster
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master
Joined: Jan 2005
Posts: 3,635
Oakland, MI
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Quote:
Ryan,
Thanks for posting this...it goes to illustrating my point made on the header thread how a too small collector will (for want of a better word) "FORCE" the motor's torque to Peak at too low an RPM which acts like a cork onthe rest of the higher RPM Horsepower curve. Looks like the 3" collector peaked at 5300 where the 3 1/2 peaked up around 5900....look how much power that is.....I know the bigger ones are stepped but I'll bet 80% of the power gain was from the larger collector letting the motor keep "feeding".
Hard to say without knowing the primary lengths, I'd think the primary's dictate the RPM more then the collector size... But if they're close to the same, then you're definately right.
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Re: 436" Arrington Head Dyno #'s
[Re: dizuster]
#208921
02/01/09 12:22 PM
02/01/09 12:22 PM
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Joined: Jan 2003
Posts: 8,547 State College, PA
RyanJ
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moparts member
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OP
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Joined: Jan 2003
Posts: 8,547
State College, PA
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Put it in the car yesterday (with much help from mrsmallblock for running a 727 neutral bal 6 bolt SFI Flex plate up to Port Royal for us, THANKS Howard) Neede to get motor in yesterday so can get driveshaft made this week & order the radiator, & start plumbing fuel system & wiring etc.
Sorry for the poor pic quality I just realized this AM my camera accidentally was set on Blur Reduction last night when I took these. I'll get some better ones next weekend when we work on it again. Hopefully should be done here in month or two.
It's a '72 Challenger, the guy doing all the body/paint/fab work is the guy who is going to do my SuperBee body/paint as soon as this one is done.
Started out as a very rusted out shell out of Georgia... all new floorpans, 1/4's, much of firewall rebuilt new inner fenders, fixed several holes in roof....
Back halfed it, ladder bars, QA1's, Mini tubs, cage etc. Ron Francis wiring, 8" ATI verter, custom 727 by Scotts Transmission in Lebanon, PA. 14.5" Quick time Pro's on Holeshot Penatstars, AlterKtion...
I think I have him talked into doing a WS fiberglass oversize 6 pack lift off hood blacked out. Gonna have Black '71 Challenger RT stripes when done, it just got out of paint booth a few weeks ago. Going to run Friday night Street racing deal at Beaver Springs this year with it, wants to run in the quick 8 deal.
Anyhow, here's couple bad pics.....
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Re: 436" Arrington Head Dyno #'s
[Re: RyanJ]
#208931
02/01/09 04:36 PM
02/01/09 04:36 PM
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Joined: Apr 2003
Posts: 111 Uppsala, Sweden
Satanized_68
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member
Joined: Apr 2003
Posts: 111
Uppsala, Sweden
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First of all, very nice numbers! No need for big blocks anymore I was wondering over the oil adapter, it looks really good using that AN -12 in the front of the engine, I'm thinking of doing something similar on my engine. Is that CV Products adapter? Do you have the part #'s for what is needed? What do you use where the oil filter was originally placed? Thanks, and sorry for hijacking the thread
Getting closer... <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />
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