S&S 124" Exhaust and Head work question

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Jun 19, 2013 | 10:06 PM

#21

piesik650

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Joined: Oct 2010

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From: Frederick, CO

so with the S&S gear drive cams setup that came with my crate am I limited to S&S cams because of my oil pump? I remember when I was ordering they said something about that.

I wanted to have them drill me ports for auto decompression and they argued with me that it if I change cams it wouldnt just be that easy. now I must rely on easy start cams because that's the only thing allowing me to crank this motor up.

Jun 20, 2013 | 05:22 AM

#22

Hillsidecycle.com

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Increasing the compression/headwork will bring it on sooner, and/or the .625 S&S cam, and that'll also respond to cylinder head modifications.
Scott

Jun 20, 2013 | 04:14 PM

#23

hog95023

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Joined: Apr 2009

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From: Booming metropolis

Would raising the headwork and comp set at 11.45-1 allow you to get into the 150s? I'm making about the same HP/tq as piesik650. Almost identical dyno graphs.

Jun 20, 2013 | 06:55 PM

#24

prodrag1320

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From: deland,florida

Quote:

Originally Posted by hog95023

Would raising the headwork and comp set at 11.45-1 allow you to get into the 150s? I'm making about the same HP/tq as piesik650. Almost identical dyno graphs.

with the right headwork,compression & cams,150+ isnt out of reach,we just did heads for a customer that yeilded 149/148

Jun 20, 2013 | 07:32 PM

#25

Hillsidecycle.com

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Quote:

Originally Posted by hog95023

Would raising the headwork and comp set at 11.45-1 allow you to get into the 150s? I'm making about the same HP/tq as piesik650. Almost identical dyno graphs.

I've never seen those run off in the 150's at 11.45 cr, however, at 11.8(not for you)62mm HPI/custom exhaust/our Stage III head modifications, and I'll add a 130 rear tire, we have seen that power.
It is in an older Night Train, that a fellow owns up near the Thousand Islands.
He used to be a wild man on his 95"er, but the 124", cooled him waaaaay down, and as a matter of fact, his words are "I really do not want to find out how fast it will go", as he has said it'll put the speedo on 120............in 3rd gear.