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Re: M.P. STAGE 6 HEADS
[Re: J_BODY]
#787671
09/03/10 12:38 PM
09/03/10 12:38 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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Quote:
...and pay close attention to "traditional" RB intake. There were M1 intakes made to fit the RB/stage VI combo that did away with the spacers.
In the Stage VI intakes, the 4500 version was a much better performer out of the box. The 4150 intake sucks, unless you pay somebody who knows intakes to perform a major rework on the underside of the carb mounting pad (like I did). The 4150 version is a good example of how band-aiding a 4500 design to fit a 4150 carb can really screw up things.
Even then, the large size of those intakes' plenums was much better suited to 500-ish engines, rather than the 440-ish size to which the standard Stage VI heads seemed best suited.
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Re: M.P. STAGE 6 HEADS
[Re: BloFish]
#787673
09/03/10 12:46 PM
09/03/10 12:46 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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Quote:
Quote:
Nice deal!!!!! Are you having someone port and flow them??
I will have Dwayne Porter do them for me.
IMO, he's a great choice for that work. Be prepared for him to let you know about all the other "stuff" he finds that need to be fixed. That's life w/ Stage VIs...
Mine actually just came back from Dwayne's shop this week. Now I have to figure out what I'm going to do w/ 'em.
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Re: M.P. STAGE 6 HEADS
[Re: BradH]
#787674
09/03/10 12:47 PM
09/03/10 12:47 PM
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Joined: Jan 2003
Posts: 16,928
NC
440Jim
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,928
NC
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Quote:
... because they can work really well, once finished properly.
I have the EM470 heads and ran them until I switched to alcohol, and I didn't want to take a chance with the epoxy in the intake ports. So they are a back up for a gas setup.
My Indy 440-1 heads run about the same as the highly modified/ported EM470 heads. But my E85(ethanol) combo makes a little more power since it added injection, a bigger cam, more CR, with the fuel. So the EM470 heads are about the same as a decent set of Indy 440-1's (not the CNC version).
In good air, they went 9.29 in my 3220 pound Dart, with a flat tappet cam.
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Re: M.P. STAGE 6 HEADS
[Re: 440Jim]
#787675
09/03/10 12:51 PM
09/03/10 12:51 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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Quote:
Quote:
... because they can work really well, once finished properly.
I have the EM470 heads and... they went 9.29 in my 3220 pound Dart, with a flat tappet cam.
You probably had the fastest full-bodied (3000+ #s) Stage VI-headed car on the planet. The only cars w/ those heads that I'd ever heard of going faster were tube-chassis deals that were closer to 2500 #s.
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