Re: Chapman Stage VI vs Trick Flow 240s
[Re: DGS]
#2403910
11/15/17 12:19 PM
11/15/17 12:19 PM
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Joined: Feb 2005
Posts: 20,158 PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,158
PA.
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Were they checked on the same bench? Tube on the ex, no tube.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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Re: Chapman Stage VI vs Trick Flow 240s
[Re: DGS]
#2403941
11/15/17 01:13 PM
11/15/17 01:13 PM
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Joined: Jan 2003
Posts: 14,492 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,492
So. Burlington, Vt.
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The advertised TF ex numbers are with a tube.
Power-wise, if you built enough motor to be able to exploit them, the Chapmans would make more power. Downside.......they use a bunch of custom parts, and if you needed a replacement down the road at some point....... Good luck with that.
So...... This is another one of those "it depends" situations.
The TF heads are very nicely made heads...... And still a bargain for what they cost.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Chapman Stage VI vs Trick Flow 240s
[Re: pittsburghracer]
#2403943
11/15/17 01:15 PM
11/15/17 01:15 PM
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Joined: Jan 2003
Posts: 2,094 central texas
krautrock
top fuel
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top fuel
Joined: Jan 2003
Posts: 2,094
central texas
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Were they checked on the same bench? Tube on the ex, no tube. there are chapman heads on the BB head flow chart in the archives, if that was on Dwayne's bench then it seems there is a pretty direct comparison. Trick flows flowed as advertised on his bench. One thought, maybe the Chapman's would be a little better, but I recently saw a bair pair for sale and I think the price was $3k, for that price diff I would definitely run the PP240's...unless for some reason running an RB intake on a B motor is really advantageous for a person...
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Re: Chapman Stage VI vs Trick Flow 240s
[Re: AndyF]
#2404019
11/15/17 04:26 PM
11/15/17 04:26 PM
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Joined: Jan 2003
Posts: 9,872 Weddington, N.C.
Streetwize
master
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master
Joined: Jan 2003
Posts: 9,872
Weddington, N.C.
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If I remember right (I think it's in the archives) Dwayne said the chapmans picked up a TON with a tube, something close to 300 cfm....So compare Apples to apples. He said he was suprised because he didn't originally think they would.
I have the Max Wedge 285cc port Chapmans but I'm 99.9% certain the exhaust is the same as the 260's.
As for the custom parts? Well you need a set of Race W2 style Rocker stands (arguably well worth it for rigidity anyway) and I used the Hughes (I think they were .585(?) can't remember) offset rocker for the Victor and only needed to relieve the outside of the runner castings a tad, about 30 minutes for all 8 with a carbide. Nothing else fancy and I bought a set of nice light stem 2.25"/1.81" Ferreas for the bare castings. I didn't really see them as that impractical considering there was really nothing other than the -1's on the market to compare back then, and they needed 'tweaks' to like external oiling and custom offset rocker as well. The nice thing is for low decks (like my 517) any RB MW manifold will bolt right on. If you run strong roller springs the billet stands add a lot of high RPM stability compared to any as-cast-in-head aluminum pedestal. It would cost you a lot in bridgeport machining to retrofit to billets if you wanted to upgrade, that was my reasoning anyway.
So it depends on what you want, for me it was a head that flows 335 at only .500 lift and 360 at only .600 that clinched it for me. I think the 260 actually flowed as well or slightly better below around .350-.400 than the Maxies. I also wanted a wedge head that could pull like a hemi above 6500 rpm, but without having to put a huge cam in it.
I wonder if JohnRR ever used his set of 260's, I know we both sent them to Dwayne for flowbench testing back in like 2004-2005? The real issue is probably finding a set, I wish someone would recast them, but after looking at the 260 side by side numbers....maybe TF used a set for their own R&D??
Last edited by Streetwize; 11/15/17 04:44 PM.
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Re: Chapman Stage VI vs Trick Flow 240s
[Re: mopar dave]
#2404060
11/15/17 05:41 PM
11/15/17 05:41 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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Sorry for asking silly questions, but are these sb or bb heads? BB, if you hadn't figured it out already.
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Re: Chapman Stage VI vs Trick Flow 240s
[Re: Streetwize]
#2404168
11/15/17 08:18 PM
11/15/17 08:18 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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Wish I has known I would have liked to have another set I had to think a loooong time about whether or not to buy John's 260s. I really wanted them, but what I estimated the "all in" cost was going to be to upgrade from my old Stage VI setup scared me off. A few years later I came across another set, but for more $$$ than what John was asking for his. It started the whooooole process over again in my head and, once again, the total cost to make the switch was higher than I was willing to pony up.
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Re: Chapman Stage VI vs Trick Flow 240s
[Re: mopar dave]
#2405938
11/19/17 03:03 PM
11/19/17 03:03 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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Yeah. Thanks. Didnt know chapman made bb heads. For a very short time back around 2003-2004, IIRC. Very nice, but hideously expensive. I'm happy with my standard-port Victors now that all the dust has settled from my multiple cylinder head purchases & sales since then.
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Re: Chapman Stage VI vs Trick Flow 240s
[Re: DGS]
#2405998
11/19/17 05:43 PM
11/19/17 05:43 PM
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Joined: Jan 2003
Posts: 14,492 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,492
So. Burlington, Vt.
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If I were looking for a std port head with more flow than the TF 240 for myself, I'd probably use some Indy SR's. I like the Indy external top end oiling, the raised intake port/valley plate arrangement, and the ability to use non-offset rockers.
Without Herculean porting efforts, they can flow in the 340's at std port window size. It requires full porting to get there, but nothing really crazy.
If the std port Victors didn't come with the bowls cast so ridiculously small, I think they might sell more of them. I like the Indy valley plate arrangement better than the victor plate too.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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