Re: Indy single plane 4500 manifolds
[Re: 408strokerdart]
#2097160
06/24/16 02:23 AM
06/24/16 02:23 AM
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Joined: Feb 2007
Posts: 6,295 U.S.
moparniac
master
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master
Joined: Feb 2007
Posts: 6,295
U.S.
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I have not, if you want and I'll pay the shipping both ways.... Try my intake out.
Mopar Performance
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Re: Indy single plane 4500 manifolds
[Re: 408strokerdart]
#2097165
06/24/16 02:29 AM
06/24/16 02:29 AM
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Joined: Aug 2003
Posts: 43,223 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,223
Bend,OR USA
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I think AndyF has, maybe not I've dyno tested motors with both but not on the same motor I think the 3X is for large C.I. motors, probally above 511 C.I. the one motor I assembled and dyno tested the 3X was a 4.5x4.5 World block with right at 15.0 to 1 compression on race gas, it had uneven fuel distribution problems on # 2 and #7 cylinders according to the EGT and spark plugs Bob Goerge could, and can, probally fix that
Last edited by Cab_Burge; 06/24/16 02:33 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Indy single plane 4500 manifolds
[Re: moparniac]
#2097248
06/24/16 11:00 AM
06/24/16 11:00 AM
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Joined: Feb 2003
Posts: 3,456 Out West
408strokerdart
OP
master
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OP
master
Joined: Feb 2003
Posts: 3,456
Out West
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I have not, if you want and I'll pay the shipping both ways.... Try my intake out. I am running mechanical Alky injection so it's not as simple to just try one out (has to have tapped intake ports). Thanks for the offer though.
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Re: Indy single plane 4500 manifolds
[Re: 408strokerdart]
#2097300
06/24/16 12:31 PM
06/24/16 12:31 PM
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Joined: Jan 2003
Posts: 14,506 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,506
So. Burlington, Vt.
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I think it depends on the cubes and power level.
I did the test years ago on a 557 with mildly ported 440-1's. This motor was only making around 725hp. I tested the 440-3, 440-3x, and 440-25 X-ram with in line 2 x 4bbl top. On that motor the 440-25 was best, by about 20hp.
The -3 and -3x were nearly identical.
A few years ago we ran a 505 with some MM ported -1's on it, 750hp range, tried the -3 vs -3x and got the same results....... No real difference.
I'd say if you're at 540+ cubes and solidly into the mid-800hp range, that's when the 3x will start to show what it can do.
The only motors I've used them on had 572-13 heads, and both of those run pretty well, but I never ran any other intake on them.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Indy single plane 4500 manifolds
[Re: fast68plymouth]
#2097303
06/24/16 12:35 PM
06/24/16 12:35 PM
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Joined: Feb 2003
Posts: 3,456 Out West
408strokerdart
OP
master
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OP
master
Joined: Feb 2003
Posts: 3,456
Out West
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I think it depends on the cubes and power level.
I did the test years ago on a 557 with mildly ported 440-1's. This motor was only making around 725hp. I tested the 440-3, 440-3x, and 440-25 X-ram with in line 2 x 4bbl top. On that motor the 440-25 was best, by about 20hp.
The -3 and -3x were nearly identical.
A few years ago we ran a 505 with some MM ported -1's on it, 750hp range, tried the -3 vs -3x and got the same results....... No real difference.
I'd say if you're at 540+ cubes and solidly into the mid-800hp range, that's when the 3x will start to show what it can do.
The only motors I've used them on had 572-13 heads, and both of those run pretty well, but I never ran any other intake on them. This application will be a 572 with 440-1 345CNC heads on alky making around 950ish hp. Just wondering if it is worth it to go to the "X" version of this intake before investing in the machine work for the injectors and port divider work.
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Re: Indy single plane 4500 manifolds
[Re: 408strokerdart]
#2097382
06/24/16 02:43 PM
06/24/16 02:43 PM
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Joined: Jan 2003
Posts: 14,506 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,506
So. Burlington, Vt.
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I don't know how much different it would be, but I think I would use the 3x on that combo.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Indy single plane 4500 manifolds
[Re: fast68plymouth]
#2097468
06/24/16 04:23 PM
06/24/16 04:23 PM
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Joined: Feb 2003
Posts: 3,456 Out West
408strokerdart
OP
master
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OP
master
Joined: Feb 2003
Posts: 3,456
Out West
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I don't know how much different it would be, but I think I would use the 3x on that combo. Thanks. That is what I'm thinking also.
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Re: Indy single plane 4500 manifolds
[Re: 408strokerdart]
#2097596
06/24/16 09:41 PM
06/24/16 09:41 PM
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Joined: Jan 2003
Posts: 19,372 Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,372
Las Vegas
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From my experience the 3X is for a big HP big cube deal. Otherwise it is more plenum than smaller engines need. The 3X is pretty close to a B1 intake and treat it as such. It does not belong on a typical bracket motor especially if someone has done work to the plenum for sure. I have each ere for our drasgter
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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