Mike Petralia’s Hardcore Horsepower

We make it go fast!!!

Projects & Vehicles

Video: Hardcore Horsepower Project ‘55 Chassis Dyno Test

1955 Chevy

Engine: 406ci Blown small-block Chevy
Peak RWHP: 519 @ 6,200
Peak RWTQ: 483 @ 4,600
Estimated Engine HP: 615-625*
Estimated Engine TQ: 575-585*

Boost: 9psi

Fuel: 93-octane unleaded pump gas

*Assumes approximate 17% powertrain losses. Dyno charts on file.

Work performed:
-Built installed and dyno-tuned a custom 406ci blown small-block
-Installed “Unisteer” power rack & pinon steering
-Installed Art Morrison Enterprises custom rear coil-over suspension
-Installed new Weldon 1,00hp fuel system

-Rewired entire vehicle

-Replumbed entire brake system with custom-bent stainless steel tubing

-Fabricated complete, custom 3″ stainless steel exhaust system

-Generally cleaned up and repaired most of vehicle

-Chassis dyno-tested vehicle

**********************

1968 Pontiac Firebird convertible
Engine: 383ci small-block Chevy
Trans: GM 700R4

Work performed:
-Rebuilt, modified, and tuned Holley 705cfm vacuum secondary carb.

-Resealed trunk and door weatherstrip to fix leaks

-Replaced numerous rusty steel fasteners with stainless fasteners

-Fixed fuel leak at tank.

-Misc electrical repairs.

*************************

1994 Corvette
Engine: 383ci LT-4 small-block Chevy
Peak RWHP: 427 @ 5,800 rpm
Peak RWTQ: 464 @ 3,800 rpm

Est. Engine HP: 515-525*
Est.
Engine TQ: 555-560*
*Assumes approx. 17% powertrain losses

Work performed:
-Installed Exotic Muscle 1-3/4″ full-length headers and hi-flow twin cat system.

-Gained 22RWHP (approx. 27.5* FWHP) with new exhaust.
-Repaired Accel Super Ram EFI intake manifold.

*************************

1932 Ford

Featured in: Street Rod Builder Mag - Nov 2008
Engine: 5.7L Hemi

Fuel Injection: Momar 8-stack EFI

ECU: Big Stuff III
Trans: GM 4L60E automatic

Work performed:
-Designed and installed custom EFI system and custom wiring harness that controls both EFI and transmission
-Assisted in design and installation of custom single-spark-plug/single-coil-per-cylinder computer-controlled ignition system
-Fabricated and installed custom crank trigger wheel and timing pointer
-Degreed cam
-Tuned for best power and drivability

*************************

1971 Camaro
Featured in: Super Chevy Mag - Feb 2006 (car feature), Jan 2004 (engine feature), and Aug 2003 (cover photo)
Link:
http://www.superchevy.com/features/camaro/sucp_0602_1971_camaro_z_zilla/index.html

Engine: 355ci small-block Chevy
Peak RWHP: 326 @ 5600*
Peak RWTQ: 398 @ 4300*
Peak Engine HP: 422 @ 5600
Peak Engine TQ: 452 @ 4300
*21% actual powertrain losses. Dyno charts on file.

Work performed:
-Built custom 355ci Small-Block Chevy V8
-Installed engine
-Installed custom cooling system including 1-pc trans/engine oil cooler
-Dyno tested engine
-Chassis dyno-tested vehicle

*************************

1985 Buick Regal GN turbo V6

Engine: 3.8L V6

Work performed:

-Rebuilt/blueprinted OE engine.

-Modified oiling system for more flow and pressure.

-Installed 29,000 btu oil cooler with -10AN braided stainless lines.

-Welded, repaired, and resurfaced factory exhaust manifolds.

-Repaired underhood wiring.
-Repaired leaking exhaust cat-back system.

*************************

1990 Nissan 300ZX twin turbo

Work performed:

-Rebuilt OE engine to stock specs.

-Installed remanufactured turbos.

-Installed new Z1 stainless turbo down pipes and HKS stainless exhaust system.

-Installed new clutch.

-Installed upgraded single intercooler.

-Repaired malfunctioning power steering system.
-Performed boost-leak test to confirm sealed system.

*************************

1993 SVT Cobra Mustang
Engine: 4.6L Mod Ford supercharged

Work performed:

-Installed Centerforce clutch, disc, throwout bearing, and Fidanza steel flywheel.

-Replaced damaged clutch release lever
-Repaired (welded and remachined) cracked T-56 trans’s steel throwout bearing sleeve.

*************************

1990 Chevy SS454
Engine: 454 big-block Chevy EFI

Work performed:
-Installed Edelbrock Pro-Flow Multi-Port EFI system
-Tuned for best power, economy, and drivability
-Passed TN emissions testing program

*************************

1963 Chevy II
Engine: 355ci small-block Chevy

Work performed:
-Installed 12″ Wilwood front disc brake system
-Installed KRC racing power steering pump and remote resivoir
-Fabricated offset steel leaf spring brackets
-Installed Global West 1-inch drop, multi-leaf springs
-Fabricated steel alternator relocation brackets
-Installed 1/2″-20 rear wheel studs
-Installed Autolite racing plugs
-Power-bled complete brake system

*************************

1991 Jaguar XJ-S small-block Chevy V8 swap (in progress)
Engine: 355ci small-block Chevy

Work performed:
-Installed remanufactured 355cid small-block Chevy
-Installed GM 700R4 automatic transmission
-Project is ongoing….

*************************

Carb Choices

Magazine story: Super Rod Mag. September 2007
Subject: The Ultimate Guide to Choosing the Right Carb

Technology covered:
-Choosing the right carb for your engine
-525, 625, and 750cfm carbs dyno tested on a 355cid street engine

*************************

No comments yet. Be the first.

Leave a reply

You must be logged in to post a comment.

Web Design and Printing