If your looking for a high output 4 have a look at this one.

For the 2012 MY

LLV  Canyon, Colorado 2.9 Vortec 2.9L I-4 VVT DOHC SFI 95.5 x 102 10.0 185 hp ( 138 kW ) @ 5600* 190 lb-ft ( 258 Nm ) @ 2800* this is SAE NET power

This engine when modified can make another 30-40 HP in street trim with exhaust porting, header and a tune.

Last edited by efi-diy; 11/24/12 06:40 PM.
51 GMC 4.2 turbo
Can't solved today's problems using the same technology/thinking that created them