W5 Dyno Before & After
#988449
05/08/11 10:44 PM
05/08/11 10:44 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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Ran Kyle Clark's new 436 W5 motor on Thursday night & Friday morning, was interesting to see what a few changes did.
As quick refresher, his motor was one that was purchased from the Mancini racing "Chrysler Engineering Sale" Section a few years ago as an old mid 90's built 365" W5 motor complete. Kyle dropped it off @ the shop after purchasing it from Mancini & I just freshened it, reground the cam, did a valve job, put new set of HS rockers on it etc.
We dynoed it @ Rider racing on their SF902 dyno & it made 594 HP/460 TQ.
Kyle ran it for a year or so & then felt the need for bigger cubic inches.
So he brought it back out this winter & prior to tearing it down for the changes we ran it on our Stuska in same state of tune as it was ran before, same dyno headers, same 950 HP carb (jetting was hair different) same 1" HVH spacer & I set timing to 38 where it made best power on dyno before. Made 576 HP/469 TQ. We only put 2 pulls on it, & the AFR was a bit rich in the 12.2 range, if I had leaned it up I think we'd have been in the 590 range. So all looked good.....
The old combo was 4.02" bore & 3.58" crank. I sold him a used 4.125" rotating assy out of another customers motor who was going even bigger. That was a 4.10" bore piston & so we bored the R block to 4.10 & I took .040" off the pistons to make the CH work out to Zero deck with Kyles funky 9.46 deck height of the Mancini block.
I reground the cam to almost identical specs as was in the 365 except I bumped up the ramp speed a little bit. I thought I had changed duration @ .050" but now that I look back on the 365 cam card I see that the @ .050" #'s were identical @ 274/278 on both cams. I thought I had little more duration the 365 but did'nt.
Did not change the heads at all except I milled them .030" to get chambers to 49.5 CC to achieve a little more compression since pistons had a large dish in them, final compression ended up right around 10.8:1 on the new 436" motor. The old 365 was a flat top motor in the 11.3:1 range. I did not even do a new valve job etc, the old combo had around 1000 miles on it & everything looked like new in the heads....
We changed water pump from a mechanical to a new Moroso electric....
& one of the big changes was replacing the small runner M1 intake manifold with a new 360-3O Indy intake. The old M1 was a heavily modified piece with alot of weld on the top of runners to accommodate the extra tall port shape in these heads along with the low 9.46 deck height. The M1 had been heavily worked inside by Arrow racing who did the original head & intake work. To get the INDY to fit I had to take .230" off of it & we also took .500" off the plenum for hood clearance issues, so I set height to same as the M1 small runner intake. Was alot of work to get the Indy on it, but it payed off...
So basic combos:
365" 59 degree "R" block 4.02" bore 3.58" MP Billet crank C&A Billet 6.2 rods Custom JE flat tops, 1/16" 3/16" ring pack 11.3:1 compression 274/278 @ .050" .700" Lift 108 LSA solid roller Moroso oil pan & mechanical water pump 1.6:1 Harland Sharp rockers 3/8" .145" wall Manton pushrods Arrow Lg Port W5 heads, 2.08"/1.60" valves Arrow ported M1 small runner intake 1" HVH super sucker 950 HP carb
436" Same 59 Degree "R" Block 4.10" bore 4.125" stroke K1 crank 6" Callies CompStar rods Custom Diamond Dish pistons, .043"/.043"/3MM Total seal napiere rings, gas ported 10.8:1 compression 274/278 @ .050" .700" lift 108 LSA solid roller same moroso oil pan & new moroso electric water pump Same 1.6:1 Harland Sharp rockers Same 3/8" X .145" Manton pushrods Same Arrow Lg Port W5 heads & all same valvetrain. INDY 360-3O intake converted to W5 port 4150 flange. Ran with both 1050 Quickfuel 4150 series carb & 1050 QF Dominator
Both motors ran with same 1 7/8"-2" step headers with 3.5" collectors.
Same ignition system, breather system etc in both combos.
Really the only changes were addition of 71 cubic inches, better ring pack, better machine work on block, little more ramp speed on camshaft, electric water pump & the INDY intake. We actually gave up 1/2 point of compression on new combo.
We ran the motor on Thursday night with a customer custom 85p Holley & then went to my 1050 Quickfuel Dominator on a 2" adapter & made the big #'s in that state of tune.
Kyle came on Friday & we put his new 1050 QF 4150 series carb on & tried it with several different spacers & jetting combos. It worked ok, but was never able to come near the Dominator in power production. & last pull of day we put on an untested 1050 King demon just to put a pull on it & even being way lean it was still hair better than the 4150 carb. Fattened up it would ahve been right with the QF Dominator. We're going to add some Jet to it & pull it on a W9 motor this week. Last 2 motors I had on the dyno, last week were a 302 head 318 & a Edelbrock head 340, so did'nt want to test either Kyles 1050 or my new King demon on either of those LOL.
I was happy to see the #'s as high as they were... this is the best W5 I've built to date, we've had 4 other W5 combos on this dyno including a pair of 440 inchers, a 400 & a 416 & they have all been in the 650-680 range. The heads on this motor are quite large in cross section, & were a bit big for a 360, but the 436 eats them up nicely.
Lack of cyl pressure sure did not seem to hurt this one @ all. 1.41 TQ/INCH @ 10.8:1 on pump gas is good # for this big of a piece. AWBDARTs 440" Indy 360-1 CNC head motor with vaccum pump & half point more compression made 1.42/INCH on this dyno. So this should work pretty good in Kyle's 4 speed duster.
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Re: W5 Dyno Before & After
[Re: fishy340]
#988459
05/09/11 12:25 PM
05/09/11 12:25 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:
he will be happy,and im happy i was dying to see an interesting post,its been a while!
Hopefully you get to see an "interesting" one on Saturday....
The Port in those heads are about 2.50" X 1.30"
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Re: W5 Dyno Before & After
[Re: Quicktree]
#988461
05/09/11 12:46 PM
05/09/11 12:46 PM
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Joined: Aug 2003
Posts: 11,179 Atco NJ
DJVCuda
I Live Here
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I Live Here
Joined: Aug 2003
Posts: 11,179
Atco NJ
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Quote:
well I guess I would heve to get micrscope to see those numbers
click on the attachment at the top of the post - it will load the larger image.
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Re: W5 Dyno Before & After
[Re: fishy340]
#988467
05/10/11 06:47 PM
05/10/11 06:47 PM
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Joined: May 2004
Posts: 3,210 robin hood country
deaks
master
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master
Joined: May 2004
Posts: 3,210
robin hood country
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What times did he run with the old motor and at what weight. Mick
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200# best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft best 60ft 1.36
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Re: W5 Dyno Before & After
[Re: RyanJ]
#988468
05/10/11 06:50 PM
05/10/11 06:50 PM
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Joined: Jan 2003
Posts: 4,085 Indiana
W5Duster436
master
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master
Joined: Jan 2003
Posts: 4,085
Indiana
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I've been pretty sick since returning from PA so haven't had a chance to respond yet but wanted to say that Ryan and company have done another outstanding job and I couldn't be happier. The knowledge and professionalism is second to none. Driving up Thursday evening Ryan called to give me the initial numbers with the Dominator and I nearly drove off the road. After thinking it would be in the 660-680 range I had to almost ask if the Dyno needed recalibrated. LOL Andy, with this much power I am darn happy my steering wheel is tight! Thanks again Ryan for a job well done!
'70 Duster - SDSS 436 W5 4spd (Gone) '71 Dodge D100 '70 Dodge W100
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