We drummed up a conversation with Jack McInnis and Tony McAfee at Dart to see what it would take to shift that 550hp number north of 600 while still having an engine that would run on pump gas and be durable on the street. Those of you who follow our Laguna project know that we enjoy tossing the two-ton Betty into the corners on autocross and road race courses, but it spends more than its fair share of time in Los Angeles traffic. McInnis and McAfee thought that a bit more compression and camshaft will be sufficient to push the 427 SHP over the 600 mark without creating a hand grenade with the pin pulled.

There are definitely some things you should realize about an engine like this. That kind of horsepower and torque will plaster a smile on your face that will make your girlfriend jealous. But it’s not a docile, smooth idling, 25-mpg mill. It’s going to have a lumpy idle, low vacuum for accessories, and scare small children. We’ll have no problems tolerating it in bumper-to-bumper traffic in SoCal, but not everyone would. With that reality check out of the way, we stopped by Dart in Troy, Michigan, to photograph the drool-worthy parts that would make up the short-block of this potent anti LS engine.

Where the Money Went
Description: Source: PN: Price:
Dart 427 SHP short-block (assembled) Dart/Summit 3124272 $5,397.73
COMP Cams solid-roller camshaft custom grind COMP/Summit CCA-12-000-9 $324
COMP Cams billet double-roller timing set COMP/Summit CCA-7100 $95

SOURCE
Performance Distributors
2699 Barris Drive
Memphis
TN  38132
901-396-5782
http://www.performancedistributo
rs.com
Summit Racing
Akron
OH
800-230-3030
330-630-0240
http://www.summitracing.com/
Dart Machinery
353 Oliver Street
Troy
MI  48084
248-362-1188
http://www.dartheads.com
Mahle Motorsports
Fletcher
NC
888-255-1942
http://www.mahlemotorsports.com
Comp Cams
3406 Democrat Road
Memphis
TN  38118
800-999-0853
http://www.compcams.com