Installation manual

Part #1574, 1575, 1576

Brochure #63-1574

Rev. 9/24/14 - QT

Edelbrock GM LS3 Supercharger System for

2010 and later Grand Sport Corvettes

Installation Instructions

Page 24

158. Use a 12mm socket to install the water pump in its

bracket and secure it with the supplied strap.

159. Remove the passenger side lower body pin.

160. Use a 10mm socket to loosely install the water pump

bracket using the stock horn bracket bolt on top and the

bolt supplied in Bag #3 on the bottom.

NOTE: There are two different water pump brackets:

Version (1) requires the use of your OE horn bracket.

Version (2) has an integrated horn bracket. You should have

received one of the two brackets; If your supercharger kit

includes bracket version (2), you may disregard Step 161.

Version (1)

Version (2)

OE Horn brkt.

161. NOTE: This step only applies to customers who

received version (1) of the water pump brackets. Install

the supplied stand-off and lock nut onto the OE horn

bracket. Proceed by mounting that assembly, with the

supplied M6 x 10mm bolt, to the water pump bracket as

shown below.

162. Re-install the horns using the OE nuts. Be sure

to orient the horns so that there is slack in the horn’s

wiring harness. Warning: Do not mount the horns with

the openings facing up, as they may accumulate

condensation and cease working.