Finally dyno'd the car.
Thanks.
Sort of, yes. Power dropped off as you see around 6500-6600.
So, 6600rpm X 7.65" (crank pulley) / 3.40" (blower pulley) X 4.1 (step up ratio) = 60885 rpm. Max rpm for the blower is 62,500, so I'm good to go for now. Maybe an 8.00 crank pulley would get me more...
Sort of, yes. Power dropped off as you see around 6500-6600.
So, 6600rpm X 7.65" (crank pulley) / 3.40" (blower pulley) X 4.1 (step up ratio) = 60885 rpm. Max rpm for the blower is 62,500, so I'm good to go for now. Maybe an 8.00 crank pulley would get me more...
Congrats again, solid #'s
Thread Starter
Joined: Nov 2001
Posts: 10,813
Likes: 15
From: Doylestown PA
It's been on the street for a little over a year now. I built the engine but had a machinist do all the machine work, and walk me through the engine assembly.
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Thread Starter
Joined: Nov 2001
Posts: 10,813
Likes: 15
From: Doylestown PA
For reference, that's only 0.7 degrees of knock. Yes, the fueling is rich, but his tailpipe O2 was reading 0.4 leaner than me, so I didn't want to lean it out too much. Granted, tailpipe readings are usually leaner, but I've also heard that running on the street is usually leaner than dyno as well.
It also looks like I did get a little belt slip, that or maybe I'm at the limit of my flow rate of my intercooler. It's only a 3" wide one, maybe I need to upgrade to a 4" version.
TECH Fanatic
Joined: Nov 2001
Posts: 1,027
Likes: 2
From: KS
I think that's dang nasty power for pump gas. And adding timing would be careless. You already experienced what happens when your motor fails. (Down time sucks and costs money!) Congrats on some great numbers.
Thread Starter
Joined: Nov 2001
Posts: 10,813
Likes: 15
From: Doylestown PA
Very true. This is the reason why I didn't want to dyno it lol, because no matter the number, you always want more and start second guessing everything like how much more would 1-2 degrees had gotten me.
ive been messaging GMHTP to do a side by side comparison of front mounts pre and post to see which brands provide better IAT and the least restriction. I think that is an article we would all enjoy or benefit from in some way.
