The 415 For Sale

[USAFPILOT]

Has Corey H ever built a 415?

[1990 415]

Originally Posted by tpepmeie

Post em up. I'd be interested in the torque curve as well as the location of Peak Power. New thread, maybe?

Todd

I was searching tonight for my dyno sheets and found out my wife "cleaned" up in my den while I was in BG at the gathering 3 weeks ago and she may have disposed of them. I wasn't very happy to say the least. I will see if Marc still has a record of the original dyno he did for me when I took delivery
of the 415 4 years ago. If I can get it from Marc then i will need to figure out how to post it up. However this won't get done until after i return from France where i will be watching the 24 hours of Lemans and cheering on the C6Rs in their very last race as a GT1 entry.

[tpepmeie]

Originally Posted by 1990 415

I will see if Marc still has a record of the original dyno he did for me when I took delivery
of the 415 4 years ago.

Wasn't it 550's rwhp when Marc did it? I wanted to see the 585, man! Hope that sheet didn't get tossed.

Todd

[1990 415]

when I took delivery from Marc it made 579 rwhp and 491 rwtq. the 585 rwhp was with the mufflers removed and straight pipe in their place. the shape of the curves between the 2 was virtually identical, with the second one just elevated a bit over the original. I am not slinging some B.S. with these numbers. It will probably be 3 weeks before I will have time to let you see the graph (Lemans is calling me).

[Polo-1]

Those are good #'s 579/491

I think Demps 415 was 564/488 with LPE B cams and no secondaries.

[1990 415]

Mine has the secondaries with SGC stage 3 cams

[Pete]

Originally Posted by Polo-1

Those are good #'s 579/491

I think Demps 415 was 564/488 with LPE B cams and no secondaries.

B Cams?
Would these be?
Intake .239 .445
Ex. .221 .400

Correct me if i'm wrong been a while.

Pete

[dbriana]

This is the info on the 91 415 for sale

DESCRIPTION/OPTIONS= 1991 Chevrolet Corvette ZR-1, Black with Grey interior, 39,xxx miles

Lingenfelter 415 CID package, including:

Open Air Filter Lid
Samco Silicone Intake
63 mm throttle body
Siamesed intake plenum
Siamesed and ported injector housings with "D" shaped secondaries Fully ported heads Oversized intake and exhaust valves Custom billet 4.125" crank Oliver connecting rods J&E 4.0" pistons 12.0:1 compression ratio 2" primary Stainlessworks, Alspaugh designed headers with Swain Tech thermal barrier coating 3" B&B Triflo exhaust with x-pipe 3" Random Technology metal matrix bullet catalysts 3" straight catalyst replacement pipes for track days Centerforce clutch Carbon fiber drive shaft Carbon fiber half shafts 4.09 differential Ron Davis NASCAR spec radiator Refinished plenum, injector housings and cam covers with Lingenfelter engraving

Additional modifications:

242 degree @ .450" lift (aka Stage III) cams (all 32 lobes), timed for horsepower New coil packs New MSD plug wires New fuel pumps New 240cc RC Engineering stainless fuel injectors Calibration by Marc Haibeck Fidanza single mass 13 lb aluminum flywheel Hurst shifter with factory knob ZF-6 transmission rebuilt and blueprinted by Bill Boudreau at ZR51 Performance New clutch slave cylinder (required for Bill's warranty) Fully rebuilt factory Bose stereo (all 4 speaker amps, head unit, tuner box) Braided stainless brake lines Performance friction Carbon Metallic pads Factory 1994 five spoke wheels.

I've owned this car since 2001. At Beech Bend in 2005, I ran an 11.2 at 134 mph on street tires and bumping the 7,000 rpm rev limiter in 4th gear.

On the original 415 build, LPE filed the secondary port throttle shafts flat for better airflow. In August 2006, Marc Haibeck found that the shafts were so thin they were bending, and the left side port throttles were stuck halfway open. Marc removed the port throttles, installed the R/C injectors and tuned the engine to run full time on all 16 injectors, improving the power delivery and throttle response dramatically. Dyno testing showed 576 corrected rear wheel horsepower through the mufflers, in ambient air temperature of 101 degrees.

[Demps]

Originally Posted by Polo-1

Those are good #'s 579/491

I think Demps 415 was 564/488 with LPE B cams and no secondaries.

Stock valves too. Dyno is in the members section. Marc never did get the driveability to what I would like but I asked him to bias the tune for WOT.

[limey]

Dyno from my 415 back in the day, i also have one from SGC that reads 602, but be damned if i can find it.