Edelbrock EFI 555

It’s no secret that modern small-blocks can often match their big-block counterparts in the horsepower department. Nevertheless, big-blocks will always reign supreme in the streetability and torque departments, thanks to their displacement advantage. Granted, 555 ci isn’t all that big for a Rat motor these days, but Edelbrock’s crate big-block Chevy produces nearly 700 hp at just 6,000 rpm. That equates to a gloriously bloated low and midrange grunt that small-blocks can only dream of, all while idling like a baby. Designed with the assistance of famed Pro Mod racer Pat Musi, the Edelbrock 555 boasts a Dart Big M block, forged internals, Edelbrock E-CNC heads, a Victor Jr. intake, and a Pro-Flow XT standalone EFI system. The 555 comes complete with a Moroso oil pan and Mallory distributor. If you’re looking for the ultimate balance between streetability and performance, it’s hard to go wrong with the Edelbrock EFI 555.

By The Numbers

Displacement: 555 ci

Bore/stroke: 4.560 x 4.250 inches

Compression ratio: 10.0:1

Camshaft: 248/256-at-.050 hydraulic roller

Output: 697 hp and 643 lb-ft

Price: $16,040

Street & Performance LS1

As hard as it is to believe, the original 5.7L all-aluminum LS1, the motor that started the Gen III/IV revolution, is no longer in production. Fortunately, if you still want one, you’re in luck because Street and Performance purchased a stockpile of the last 100 LS1s that GM built. They’re essentially the same motor that came in the ’04 GTO, and Street and Performance will outfit them with your choice of a plastic or aluminum intake manifold, and either a cable-actuated or drive-by-wire throttle body. The $5,500 sales price gets you a complete motor, but Street and Performance has every accessory necessary to get you up and running. S&P has probably performed more LS swaps than any other shop in existence, and as such, it offers a full line of custom wiring harnesses, calibrated ECUs, and front accessory drive systems.

By The Numbers

Displacement: 346 ci

Bore/stroke: 3.900 x 3.622 inches

Compression ratio: 10.0:1

Camshaft: 196/207-at-.050 hydraulic roller

Output: 350 hp and 365 lb-ft

Price: $5,500

Indy Cylinder Head Hemi

Any collection of sentences purporting to be a crate engine buyer’s guide would be remiss without a Gen II Chrysler Hemi. Arguably the gold standard of horsepower since the ’60s, old-school Hemis have been stomping their Detroit rivals for decades, and the Indy Cylinder Head 572 certainly lives up to the Hemi’s fabled reputation. Packing 572 cubes and 770 hp, this pump-gas Elephant has all the right stuff, including a World Products block, forged rotating assembly, Indy S/R aluminum heads, and Indy dual-quad intake manifold. The Hemi’s manly 272/280-at-.050 solid-roller cam is reason enough to buy this motor, and we’d argue that its prodigious displacement could easily tame another 20 degrees of duration. The Indy 572 comes with a Milodon oil pan, dual Edelbrock 750-cfm carbs, MSD billet distributor, and plugs and wires.

By The Numbers

Displacement: 572 ci

Bore/stroke: 4.500 x 4.500 inches

Compression ratio: 10.75:1

Camshaft: 272/280-at-.050 solid roller

Output: 770 hp and 725 lb-ft

Price: $16,995

SOURCE
Edelbrock (Carbs)
800-416-8628
http://www.edelbrock.com
Shafiroff Racing Engines & Components
35 Davinci Dr.
Bohemia
NY  11716
800-295-7142
www.shafiroff.com
Turn Key Powertrain
2620 Temple Heights Drive
Oceanside
CA  92056
760-941-2741
www.turnkeypowertrain.com
Smeding Performance
28875 Interstate 10W
Boerne
TX  78006
877-639-7637
http://www.smedingperformance.co
m
Indy Cylinder Head
8621 Southeastern Ave
Indianapolis
IN  46239
317-862-3724
www.indyheads.com
Jon Kaase Racing Engines INC.
Winder
GA  30680
770-307-0241
http://www.jonkaaseracingengines
.com
Chevrolet Performance Parts
P.O. Box 33170
Detroit
MI  48232
800-577-6888
http://www.gmperformanceparts.co
m
Ford Racing
www.fordracing.com
Street And Performance
Mena
AZ
479-394-5711
http://www.hotrodlane.cc
Mopar Performance & Accessories
P.O. BOX 21-8004
Auburn Hills
MI  48321
800-992-1997
www.mopar.com/performance
Dart Machinery
353 Oliver Street
Troy
MI  48084
248-362-1188
http://www.dartheads.com
Schwartz Extreme Performance
812-206-2230
www.SchwartzPerformance.com
Mast Motorsports
330 NW Stalling Drive
Nagodoches
TX  75964
866-551-4916
http://www.mastmotorsports.com