How do these numbers look.

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Jun 14, 2016 | 07:01 PM

my406cid

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Launching!

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From: wi

How do these numbers look.

Good evening. Had my 87 buick regal with a l92 headed lq9 dynoed yesterday. Made 393 rwhp and 387 rwt. On the sec run it spiked to about 412rwhp. According to my time slip of 12.40 at 113 and a weight of about 3800 it makin about 430 to the tire. Here is the combo; lq9 l92 heads milled to 66cc with .040 gasket comp 11.2 pat g 224/232 .630 .604. Tooly .660 springs with titanium retainers. L92 intake,ported throttle body,1 7/8 long tubes 3.5 collector to 3" to rear tire exit. 4" cold air intake to area behind healights. Good numbers,bad, right on ect...

Jun 14, 2016 | 07:07 PM

HCI2000SS

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From: Howell & Fenton MI

Not bad, but dyno numbers are just that...the 113 trap speed says more

Jun 14, 2016 | 11:57 PM

1970camaroRS

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From: Everett, WA

Track numbers support 390rwhp on a dynojet. Numbers seem a little bit low though. Maybe its just the small cam and stock intake manifold.

Jun 15, 2016 | 07:42 AM

my406cid

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Launching!

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From: wi

I thought a lil low also. Would a ported manifold help much?plus the power peale is low like 5600rpm. For got to add the cam is a 115 +3

Last edited by my406cid; Jun 15, 2016 at 07:51 AM.

Jun 15, 2016 | 12:30 PM

rpturbo

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Did you degree in the cam? Maybe it's off/ground wrong.

Jun 15, 2016 | 03:18 PM

Darth_V8r

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Peak power at 5600 on that set up sounds almost like valve timing is ten degrees advanced. Torque should generally peak at 4800-5100 and power at 6000-6800 on a LS barring anything really unusual.

My first HC peaked at 5500. Sure enough cam was ground nine degrees advanced. I didn't degree the cam. Just installed and let her rip. Swapped cams, peak at 6500.

Jun 15, 2016 | 04:32 PM

KW Baraka

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From: S.A., TX

What's the compression ratio?

Seems to me that the cam is a bit mild......it has about 1* (or so) of overlap. It doesn't have the 'legs' to do much more than it's doing.

KW