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Re: W9 or P7 ?
[Re: moparacer]
#50892
12/26/07 08:43 PM
12/26/07 08:43 PM
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Joined: Jan 2003
Posts: 6,142
Melbourne , Australia
LA360
master
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master
Joined: Jan 2003
Posts: 6,142
Melbourne , Australia
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There is several variations, so what you are describing is a definite possibility with the P7 stuff. I have heard of some weird and wonderful ports with these heads.
AL....
Alan Jones
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Re: W9 or P7 ?
[Re: LA360]
#50894
12/27/07 12:07 AM
12/27/07 12:07 AM
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Anonymous
Unregistered
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Anonymous
Unregistered
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Of the ones on ebay, what should we NOT buy. Any signs to look for??
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Re: W9 or P7 ?
[Re: STEFF]
#50898
12/27/07 03:42 PM
12/27/07 03:42 PM
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Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
Leon441
master
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master
Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
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I meant to refer to that intake as 420 not 500. They claim there is a tremendous difference due to there is more material to do more work to the intake. I have heard that out of the box they are better but I don't know the 420 was the first I ever ran out of the box if you want to call converting to dominater flange out of the box. My 772 is ported to the extremes as it was run on a 468 Nitrous engine. I really need to work on the 420 but like I said why make HP when the combo does not perform in the car. Fix the problem then find more HP. I am just waiting to go to the track as I think I have a good idea where the problem is.
Leon
Career best 8.02 @ 169 at 3050# and 10" tires small block power.
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Re: W9 or P7 ?
[Re: scottb]
#50907
12/28/07 06:46 PM
12/28/07 06:46 PM
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Joined: Jan 2003
Posts: 8,547
State College, PA
RyanJ
moparts member
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moparts member
Joined: Jan 2003
Posts: 8,547
State College, PA
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Quote:
Ryan do you have a picture of the arrington intake by chance you could post thank you
I was going to try to take some at shop today, but we had steady stream of visitors all day & did'nt get around to it.
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Re: W9 or P7 ?
[Re: STEFF]
#50908
12/29/07 12:39 PM
12/29/07 12:39 PM
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Joined: Nov 2003
Posts: 253
Carbondale PA
Domino1609
enthusiast
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enthusiast
Joined: Nov 2003
Posts: 253
Carbondale PA
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Quote:
The only reason I ask is a buddy of mine, using the 15 degree Chevy CFE's on a 427" motor with a BES modified W789 intake & dominator made about 975hp. The motor went 8.49 @3000lbs. I'm kinda' suprised that 900 would be the cap for a w8 or 9 motor with a single 4, if the heads are equally as good. Apperently Bishoff really knows how to make that intake work & yes this motor was set on kill......valve spring eater, high maintainence etc...
I am not making this post to start a war but I will say this. A 15^ GM head and a 15^ Mopar head both done by CFE, taking into consideration the fact that both would be built for the same class, the same bore size the same everything. All things given they are almost the same port, now remember I am talking about the generally available stuff not the special PN Mopar W8 heads or the 15^ X heads that never made it to John Q Public
A single 4 drag race motor on kill should make 2.5-2.6 HP per cube with a sheet manifold, a little less with a good cast piece.
Like Leon said, Carl does in fact still to this day say that the W8 is the best small block race head ever made, period.
I do have a set of P7 heads on an R5 that we have been working out for Comp Eliminator. We had every trick in the book done to our W8 stuff (CFE)
and to be honest the P7 heads we have here (started from a bare casting, CFE) have it all over the best W8 heads we had. The problems are that although we have countless R5-P7 parts, nothing will work now, its all custom. But I dont know of anyone else working these out for Comp so like the small inch W8-R4 stuff we had it will take time and time and time and well.....TIME.
Happy New Year to All!!!!
Rick Liuzzo
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Re: W9 or P7 ?
[Re: DavidDean]
#50911
12/31/07 06:30 PM
12/31/07 06:30 PM
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Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
Leon441
master
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master
Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
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I love my W8 CFE's.
I would not build a round-d-round W8 for what I try to do. That said I am buying up parts to do a round-d-round P7 head engine to spray the crap out of. Can't beat the price of the heads. Now I am running into a delima on valves that were supposed to be dirt cheap. Can not find the size I need. So $2,000 in new valves will ruin the cheap price of what I have.
Leon
Career best 8.02 @ 169 at 3050# and 10" tires small block power.
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