Fast flowed my Chapmans today !
#12418
07/26/04 09:57 PM
07/26/04 09:57 PM
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Joined: Jan 2003
Posts: 9,924 Weddington, N.C.
Streetwize
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Some of you know I sent one of my Chapman 285cc Max Wedge Stage VI's up to Dwayne, he sent me back the numbers. I'll wait to see if he chimes in with some Commentary.
Last edited by JohnRR; 03/22/05 05:50 PM.
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Re: Fast flowed my Chapmans today!
[Re: Streetwize]
#12419
07/26/04 10:13 PM
07/26/04 10:13 PM
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Joined: Feb 2003
Posts: 18,582 Rust Belt, SW PA
Silver70
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Thats cool... make us wait
68 Road Runner, 69 Belvedere, 71 Challenger Vert 340 barracuda, 01 Ram CTD, 95 Ram, 04 Ram, 85 Daytona turbo Z 66 GTO, 06 Magnum RT AWD. 07 Ram CTD, 07 Ram
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Re: Fast flowed my Chapmans today!
[Re: Streetwize]
#12420
07/26/04 10:20 PM
07/26/04 10:20 PM
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Anonymous
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Anonymous
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i wish i knew he had those when i was talking to him earlier today. fess up wize, what are the numbers. don't make me write up a new bill for that crank, LOL.
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Re: Fast flowed my Chapmans today!
[Re: Streetwize]
#12422
07/26/04 10:50 PM
07/26/04 10:50 PM
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Joined: Sep 2003
Posts: 6,852 Missouri
StrokerPost
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Quote:
I'll wait to see if he chimes in with some Commentary.
Why do guys do this??????? The old bait & switch. SHOW US SOME NUMBERS ALREADY!!
Pretty please?
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Re: Fast flowed my Chapmans today!
[Re: Streetwize]
#12424
07/26/04 11:06 PM
07/26/04 11:06 PM
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Anonymous
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OH great, now i'll be sitting here ALL night waiting for the #'s.... thanks
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Re: Fast flowed my Chapmans today!
[Re: StrokerPost]
#12425
07/26/04 11:14 PM
07/26/04 11:14 PM
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Joined: Jan 2003
Posts: 9,924 Weddington, N.C.
Streetwize
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OK...here goes straight from Dwayne's E-mail to me this evening:
Lift" I/E
.100 72.5/58.2
.200 153.7/118.6
.300 224.3/178.2
.400 285.2/218.2
.500 329.6/232.8
.600 361.9/245.1 (edit-read wrong column)
.650 368.1/249.9
.700 364/253.1
.750 364/254.7
.800 364/256.3
Through .600 lift they are dead on (within ~1% either way) with Chapmans website numbers published here:
http://chapmanracingheads.com/p_Specification.asp?ID=80
It's nice to see "Real" Moparts numbers off of "Our" bench, makes me feel better about them that they've been flowed by Fast Hisself
I asked Dwayne why they apparently "stalled" at .700 especially when they were still slightly climbing from .600 to .650; On the Chapman bench they apparently peaked at 381 @.750. I'm not going to be running a cam much bigger than ~.680 but I'm still curious about that.
I have the other one and I must say, they look really nice, Kinda reminds me of a scaled up last gen SBC NASCAR head.
They seem to be....adequate
Anyway...there ya go!!
Last edited by Streetwize; 07/26/04 11:27 PM.
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Re: Fast flowed my Chapmans today!
[Re: Streetwize]
#12426
07/26/04 11:18 PM
07/26/04 11:18 PM
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Joined: Jan 2003
Posts: 17,928 Akron, Ohio
ProSport
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Nice!! Those ought to run good!
1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
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Re: Fast flowed my Chapmans today!
[Re: Streetwize]
#12427
07/26/04 11:20 PM
07/26/04 11:20 PM
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Anonymous
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Sweet mother of all that is unholy!!! Now that some flow.
Those #'s make my ported Ebrocks look like a 2hp briggs-stratton head.
P.S. thanks 4 not making me stay up all night waiting.
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Re: Fast flowed my Chapmans today!
#12431
07/26/04 11:44 PM
07/26/04 11:44 PM
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Anonymous
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Anonymous
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Just give them to me . I will be your friend
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Re: Fast flowed my Chapmans today!
[Re: Streetwize]
#12432
07/26/04 11:51 PM
07/26/04 11:51 PM
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Joined: Jan 2003
Posts: 9,924 Weddington, N.C.
Streetwize
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The funny thing is...I'm Hoping Dwayne can Elaborate, But the ports don't really look THAT BIG, The Indy-1 is Noticably bigger in total area and I've seen several SR's taken to bigger than this 285cc's. The exhaust looks like nothing special at all EXCEPT that both ports have WAYYY better short sides than anything I've seen on a Big Block Short of the B1. Again it looks to me very much like the pre SB2 NASCAR SBC port shape...only proportionally bigger. You really don't notice it at first glance but when you really start looking at the roof to long side turn it doesn't bottleneck the port like a standard VI.
Dwayne said he wanted to take some measurements.
By the way, a big thanks to Chuck Millen @ Best Machine, I know he tried and tried to get MP to get us some valves, really hoped to get numbers off of Both Benches before he sent them to Dwayne.
Last edited by Streetwize; 07/26/04 11:59 PM.
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Re: Fast flowed my Chapmans today!
[Re: Streetwize]
#12433
07/27/04 06:32 AM
07/27/04 06:32 AM
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Joined: Jan 2003
Posts: 10,081 Frostbitefalls MN (Rocky&Bullw...
gregsdart
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Wise, those intake numbers are almost a mirror image of my 440-1s!! Very good flow numbers for sure. R&J that did mine are among the best in the business , so from my point of veiw, you have a dynomite set of heads there. My runners are 365cc, so you have more velocity for a bit wider powerband? The only differance in flow numbers came above about .500 on the indys, they keep on climbing to 301 cfm at .800. But that may very well be useless, with most everything happening in the midrange lifts anyway. I will be looking for a dyno post in the near future!!
8.582, 160.18 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Fast flowed my Chapmans today!
[Re: Streetwize]
#12434
07/27/04 07:01 AM
07/27/04 07:01 AM
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Joined: Jan 2003
Posts: 6,163 Melbourne , Australia
LA360
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What size bench does Chapman Flow on, and what is Dwayne using these days? I do recall Dwayne telling me ages ago, but I can't remember everything, lol. I do recall Dwayne's bench being conservative regardless. AL...
Alan Jones
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Re: Fast flowed my Chapmans today!
[Re: LA360]
#12437
07/27/04 09:37 AM
07/27/04 09:37 AM
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Joined: Feb 2004
Posts: 6,257 acworth / N. georgia - south e...
cheapstreetdustr
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Quote:
What size bench does Chapman Flow on, and what is Dwayne using these days? I do recall Dwayne telling me ages ago, but I can't remember everything, lol. I do recall Dwayne's bench being conservative regardless.
AL...
actually the better question would be..
what size bore fixture was used?
what was the elevation, pressure?
airflow temps?
;these would be the biggest factors in seing different #s from one to another.
you have to understand conservative is relative.
now this is directed at no-one, just in general.
people have to understand.
proper bore fixture diameter, if not the same will show different results,too small for the heads application "can cause the stall" or lower peak #s
elevation in reguards to sea level is one of the biggest factors for the difference.
id say thats the biggest source of the confusion.
next would be the correction factors.to try to compensate..
just my 2 cents.
anyway
thats good flow in anyones book. id say it'll support "close to" 1000 hp, ive always liked those stage 6's seems they have been under the radar..
cheap..
365" Iron J heads,,3480lbs best 1.39 60ft on SS springs.10.54,124 mph ...6.67 1/8th et.average 60fts 1.46 w/ small cam &.063 no2 pill tagged & insured [image][/image]
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