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Re: 430" small block build
[Re: DJVCuda]
#912842
06/05/12 04:28 PM
06/05/12 04:28 PM
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Joined: Jan 2003
Posts: 9,875
Weddington, N.C.
Streetwize
master
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master
Joined: Jan 2003
Posts: 9,875
Weddington, N.C.
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Yeah I saw it was a solid roller, IIRC that's the 'FlyFish' cam that works really well on the strokers, pulls better up high than you think it would on paper. I might try that one the next time I do a 'little 'un'  Awesome combo, it would be awesome to swap the heads and test the intakes back to back just to see how far the RPM Ag can go....run the 1000HP on it though so we know it's not the carb holding it back. Seem to think the Ag's are great up to around 520-530 but with a big carb they might run further upstairs. I only run the Vic 'cause I'm trying to kill some bottom  I know the SBM intakes aren't the 15 minute swaps (like Big brother) on the Dyno though.
Last edited by Streetwize; 06/05/12 04:28 PM.
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Re: 430" small block build
[Re: DJVCuda]
#912845
07/17/12 01:54 PM
07/17/12 01:54 PM
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Joined: Oct 2008
Posts: 458
Michigan
BPE
mopar
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mopar
Joined: Oct 2008
Posts: 458
Michigan
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What! It's going back on the dyno already?  I thought you were trying to make this "The Marathon Engine Build"  Just kidding, when does it go back on the pump? Rod
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Re: 430" small block build
[Re: BPE]
#912846
07/17/12 01:59 PM
07/17/12 01:59 PM
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Joined: Aug 2003
Posts: 11,179
Atco NJ
DJVCuda
OP
I Live Here
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OP
I Live Here
Joined: Aug 2003
Posts: 11,179
Atco NJ
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Re: 430" small block build
[Re: FlyFish]
#912848
07/17/12 02:24 PM
07/17/12 02:24 PM
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Joined: Aug 2003
Posts: 11,179
Atco NJ
DJVCuda
OP
I Live Here
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OP
I Live Here
Joined: Aug 2003
Posts: 11,179
Atco NJ
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Re: 430" small block build
[Re: Dunnuck Racing]
#912854
07/18/12 01:23 AM
07/18/12 01:23 AM
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Joined: Aug 2006
Posts: 2,141
junction city oregon
viperblue72
top fuel
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top fuel
Joined: Aug 2006
Posts: 2,141
junction city oregon
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Quote:
Maybe it's just me,but I don't think you will see much of a gain until you put the bigger camshaft in it.
On the header subject,1 3/4" headers seem to be the ticket with mine. I ran 1 7/8" before thinking they were necessary. My dyno testing lately shows a hole in the torque curve that just does not get made up for up top with the bigger headers.
In anything that launches at or below about 4500 rpm anyway,I am learning to like 1 3/4" headers more and more.
Keith
No offense but I disagree that it won't be much gain. I had a 408 that was almost identical to this build, same cam. Went from mild eddies to indybrocks, and gained 4 mph in the 1/4.
So I am going to guess 560-570 horsepower.
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Re: 430" small block build
[Re: justinp61]
#912855
07/18/12 02:29 PM
07/18/12 02:29 PM
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Joined: Aug 2003
Posts: 11,179
Atco NJ
DJVCuda
OP
I Live Here
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OP
I Live Here
Joined: Aug 2003
Posts: 11,179
Atco NJ
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Quote:
Same puny 1 5/8" headers?
for now - yes
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Re: 430" small block build
[Re: viperblue72]
#912856
07/18/12 03:53 PM
07/18/12 03:53 PM
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Joined: Mar 2007
Posts: 3,300
Northern Indiana
Dunnuck Racing
master
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master
Joined: Mar 2007
Posts: 3,300
Northern Indiana
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Quote:
Quote:
Maybe it's just me,but I don't think you will see much of a gain until you put the bigger camshaft in it.
On the header subject,1 3/4" headers seem to be the ticket with mine. I ran 1 7/8" before thinking they were necessary. My dyno testing lately shows a hole in the torque curve that just does not get made up for up top with the bigger headers.
In anything that launches at or below about 4500 rpm anyway,I am learning to like 1 3/4" headers more and more.
Keith
No offense but I disagree that it won't be much gain. I had a 408 that was almost identical to this build, same cam. Went from mild eddies to indybrocks, and gained 4 mph in the 1/4.
So I am going to guess 560-570 horsepower.
No offense taken! We all have different ideas on what works and why. I just don't think the best exhaust port in the world can move enough air with that cam/header combination. I believe it will need different valve events to make much of a difference. If he steps up the header size before the cam swap,you will most likely see more.
Besides,he is running stockish versus "ported" heads,not Indybrock's with a relocated pushrod pinch. Even if the flow numbers were similar,port volume and air speed isn't 
I would think it will move the peaks up the rpm range a few hundred rpm,maybe lose a little torque down low and gain a little horsepower. I don't usually guess numbers on these posts as I'm sure his dyno is slightly different from mine,but I would venture to say a 20 lbs-ft loss down low for 20 hp up top. 
Keith
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