I gained a good 60 lbs torque. I expect to dyno with the new top end before the first of the year.

 

If I understand it correctly I am at 700 fwhp now. Cam is 248/255. But solid roller so 242/250 equivalent.

 

IDK......

Starting to add up... 240 ish cam add 25 for solid roller with another 10 hp being 12+ compression VS 11.7 basic normal math.

http://www.superchevy.com/how-to/pro...s7-crate-motor

 

Right. But remember it's a baseline. Upgrades:

Intake - sniper to msd
Cam - 248/255 to 256/270
Heads - ported stock to Mamo

Heads are still on a ups truck between CA and SC

 

This combination is great yet doesn't offer enough air to fill the Cylinder which is Hp.

 

Cam is what's going to Wake things up!

 

Never forget that brother no matter what.....


We are just trying to fill a cylinder with air and fuel. The more the better pick your RPM. Mamo heads with a great CSA > 2.250 valve will do things, just hate the damn intake. It hurts the 1st statement.

 

And to you and all here on LS1tech- Happy Thanksgiving!

 

3450 raceweight and 134 mph is already impressive. You done that with a 5000+ DA. That's way more power than the dyno shows. I'd say close to 140traps st zero DA

 

Darth how big is the throttle blade? All these newer larger sizes as 105 Ain't enough nor is a 108 mm in reality.

 

How much timing are you running? Maybe you have it in here somewhere thought I would ask.

 

102. I know it could be bigger but a 102 Tb is not killing the motor. Map is holding close to ambient at wot.

24 degrees. Not sure it was in this thread or the prior build thread. But as it sits it is 12.3:1 on 93 octane. So the timing is not going to push too far.

 

That's what makes me wonder if the dyno is a bit stingy. But it is what it is. We will see improvement and go from there.

 

Well, stingy or not, hopefully you ll use the same dyno afterwards so we ll know exactly whats gained. I ve been told mph n track times are usually your best indicators.

 

Yes that is the plan.

And I do not honestly care if it is stingy or not. I felt like suddenly I was having to defend my baseline dyno after admitting I was disappointed in the combo and then being told all the reasons it does not work optimally. Which I knew when I put it together.

I let the chatter get the better of me. Is it underperforming? Yes.

Why do I have a smaller cam with a wider LSA? Because I do not look at LSA. I set IVC and EVO based on intended rpm and then overlap based on tolerance for lumpiness. LSA just ends up getting calculated off of the valve events. And it works well for me.

The whole reason I got the sniper was it was cheap and let me put my 102 Tb on without spacers. Stock intake was pulling a 10 kpa vacuum at wot. It was a stop gap until I got what I wanted. Hope that clears it up.

Short runner plus what I suspect are lazy ports leads to heavy reversion, which means not a lot of air being trapped until it gets into some rpm. But by then the cam is out of breath. So like Spanks said earlier, it is never really in tune with itself. So I changed directions for port velocity and then upped the cam to keep the same rpm targets. Top shelf heads was always in the plan.

The comparison will show what it shows.

 

That was from Eric .....° HPR. Subject was feeding larger CI engines and low profile intakes....fast,MSD etc.. CID intake testing pending with a 528 <Eric.

 

Your a lot closer to 625RW than you are to 600RW in 5000DA. Keep working on a 1.37 60 ft and 9's will be gravy.

 

The whole thing is guys want to see this magical rwhp #..... Cars trapping Damn near Hammers numbers....think about that as is! Add the new S/R to the same head . Yeah. This is before a aftermarket casting. People want the wow factor, yet fail to see the truth in the details.

 

The MSD on the engine as it sits, or the new cam with the sniper I bet each would be much improved in their own way without swapping heads. Only 450rwtq at 7000rpm gets 600rwhp. The cam and intake not playing nice.

The Mamo combo is going to be **** no argument. Curious how the MSD does that’s the big ? to me still.

Also truth in what you’re saying if it dynod 625whp and trapped the same the thread would be really different lol but reality the same.

 

I think you are spot on with your assessment. The whole post.