Dyno Results

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Apr 11, 2011 | 10:17 AM

mrc24x

Thread Starter

Burning Brakes

Joined: Aug 2005

Posts: 1,172

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From: '88 TPI L98/HotCam Powell, Ohio

Dyno Results

I finished up my HSR 350. I'm very happy with the results but I'm fighting a few electrical issues. (2 alternators quit in less than an hour of running??)

This was on a dynojet just after my kill switch was tested and the break in oil was still in the engine. Maybe 15 minutes of total time on it....

367 rwhp / 374 rwtq

Lets just say it has more potential and I need more ballast.

Apr 11, 2011 | 10:21 AM

383vett

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From: moraga ca

Nice numbers.

Apr 11, 2011 | 10:27 AM

cv67

Team Owner

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From: altered state

St. Jude Donor '05

15 min run time and hes on the dyno

Apr 11, 2011 | 10:31 AM

James93LT1

Drifting

Joined: Oct 2004

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From: Hawaii

Very nice numbers!

Apr 11, 2011 | 10:35 AM

96 lt-4

Drifting

Joined: Oct 2005

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From: Angier nc

Good hp and loving the torque!

Apr 11, 2011 | 10:39 AM

mrc24x

Thread Starter

Burning Brakes

Joined: Aug 2005

Posts: 1,172

Likes: 9

From: '88 TPI L98/HotCam Powell, Ohio

It's a whole new ball game now. The 5.5" clutch lets it rev like a two stroke motorcycle and the car came across the scales at 2644 lbs. empty.

Apr 11, 2011 | 11:05 AM

LD85

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Joined: Feb 1999

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From: Indianapolis IN

Congrats, I think the HSR is the best all around intake for an L98 .

Apr 11, 2011 | 11:55 AM

Kubs

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From: Akron Ohio

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St. Jude Donor '09-'10-'11

Quote:

Originally Posted by mrc24x

2644 lbs. empty.

That is light!!

The new car looks awesome, and that torque curve is amazing. Did you go with a custom grind or are you still using the hot cam?

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Apr 11, 2011 | 12:27 PM

STL94LT1

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From: O'Fallon Missouri

Nice HP and TQ!!

Details of engine?

Apr 11, 2011 | 01:01 PM

#10

mrc24x

Thread Starter

Burning Brakes

Joined: Aug 2005

Posts: 1,172

Likes: 9

From: '88 TPI L98/HotCam Powell, Ohio

Quote:

Originally Posted by Kubs

That is light!!

The new car looks awesome, and that torque curve is amazing. Did you go with a custom grind or are you still using the hot cam?

HotCam, TPIS Ported 113's, 3" exhaust with 1.75" headers.......and the original, untouched chip breathing through a MAF.

Apr 11, 2011 | 01:07 PM

#11

cv67

Team Owner

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From: altered state

St. Jude Donor '05

Stock chip?

You gotta get that thing tuned if so to keep things safe and pick up a noticeable amount of power.

Apr 11, 2011 | 01:31 PM

#12

Aardwolf

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Joined: Jun 2004

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From: WI

How did the A/F look on the dyno? Pic is hard to see there. Is that 10:1 accurate?

Apr 11, 2011 | 01:36 PM

#13

steven mack

Drifting

Joined: Oct 2006

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From: Stafford Connecticut

The TPIS ported heads did they use stock valve sizes or bump them to 2.02 1.6's?

Apr 11, 2011 | 01:42 PM

#14

USAsOnlyWay

Le Mans Master

Joined: Dec 2002

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From: Seattle Area WA

Yeah I bet you have more in it, that sim didn't predict too poorly. 394rwhp/367rwtq and you had 367/374. I bet you'll pick up more with a chip too, though maybe this is right where you want to be for weigh in purposes.

Apr 11, 2011 | 05:21 PM

#15

pmihaltian

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Joined: Dec 2001

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From: Charlotte NC

Quote:

Originally Posted by mrc24x

HotCam, TPIS Ported 113's, 3" exhaust with 1.75" headers.......and the original, untouched chip breathing through a MAF.

Who did you get to port your TPIS plenum & runners?

Apr 11, 2011 | 09:08 PM

#16

mrc24x

Thread Starter

Burning Brakes

Joined: Aug 2005

Posts: 1,172

Likes: 9

From: '88 TPI L98/HotCam Powell, Ohio

Quote:

Originally Posted by Aardwolf

How did the A/F look on the dyno? Pic is hard to see there. Is that 10:1 accurate?

The tail pipe sniffer was showing in the 10's initially. (My battery was disconnected just prior to the run so that didn't help...)

The plugs look good though.

Apr 11, 2011 | 10:22 PM

#17

GREGGPENN

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From: Overland Park Kansas

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Quote:

Originally Posted by pmihaltian

Who did you get to port your TPIS plenum & runners?

Those were ported by Holley!

They're ported SO much, it's called a stealth ram now!

Apr 11, 2011 | 10:24 PM

#18

GREGGPENN

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From: Overland Park Kansas

2020 Corvette of the Year Finalist (appearance mods)

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Quote:

Originally Posted by mrc24x

The tail pipe sniffer was showing in the 10's initially. (My battery was disconnected just prior to the run so that didn't help...)

The plugs look good though.

You still running those 24SVO's (at 50psi)?

Quote:

Originally Posted by cuisinartvette

15 min run time and hes on the dyno

Apr 11, 2011 | 10:46 PM

#19

COPO

Burning Brakes

Joined: Dec 2007

Posts: 1,125

Likes: 8

From: Taft TN

Quote:

Originally Posted by mrc24x

It's a whole new ball game now. The 5.5" clutch lets it rev like a two stroke motorcycle and the car came across the scales at 2644 lbs. empty.

That should be fun!!! Losing weight is the best thing for a C4 and quick reving torque

. If you let the air out of the tires it would be under 2500

Apr 12, 2011 | 05:55 AM

#20

mrc24x

Thread Starter

Burning Brakes

Joined: Aug 2005

Posts: 1,172

Likes: 9

From: '88 TPI L98/HotCam Powell, Ohio

A few answers:

On my previous setup I ported the Accel runners, TPIS base and plenum. I didn't touch the HSR.

I'm still using the SVO 24lb injectors. The afpr seems fishy to me but it's holding 50 psi.

The valves are larger than stock but come with the standard CNC port job from TPIS. (sorry can't remember size at the moment)

More details later....late for work.

Thanks again Chris for the sims.

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