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421 Driveline (LP) w/ SLPs


Ayesully810

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Ran into a few bumps in the road which I will post about later but just wanted to share the graph with you guys. 81 hp and 50.5 torque.. And we arent done jetting, we are still super rich. Gunna finish up tomorrow and do some pipe testing as well with snipers and a few others as well.

 

 

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20cc domes on 110 and yes plus 5 timing. Our tester took a shit today so will get a more accurate reading tomorrow but we were guessing around 180. Afr is at 12.5

 

 

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Edited by Ayesully810
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Are you still at plus 5 timing? Also what is the cranking compression? I assume on pump gas?

Looking at the dyno Bill posted of their hp setup, it had +6, 35pwk, 23cc/140psi, and shearer and made 86/46. If you look at your curve around 6k, you have 40hp and at 6500 you have over 50hp, the hp one has 25 and 30hp respectively. Talk about massive front side power.

You said it was still rich, did they have the Afr curve for the pulls?

That afr number might not be exact nick but lane said it was still really really rich still. I didnt get a pic of the afr today just these

 

 

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Love the curve, and 50 tq is the most ive seen so far with these cylinders.  For short track and trails these pipes are the shit.  And these cylinders havent been out to long and every time i see a new dyno the hp is climbing.  Wonder what other builders are working with these cylinders and what theyre getting for numbers?

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Love the curve, and 50 tq is the most ive seen so far with these cylinders. For short track and trails these pipes are the shit. And these cylinders havent been out to long and every time i see a new dyno the hp is climbing. Wonder what other builders are working with these cylinders and what theyre getting for numbers?

Jesse of mac daddy is working on a set right now

 

 

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