Ok since you asked...
block to trans adapter plates
billet flywheels
torque convertor spacers (needed when using a non 4l60 and an adapter plate).
adjustable timing gears
oversize intake and exhaust valves
high tension valve springs/retainers/locks
Jessel valve train parts
rear sump oil pans
billet cam blanks
4340 h beam 6.00 rods
forged pistons - racetec, J&E among others
kooks headers
injectors upto 80#
high output coils & brackets
starter adapters for a tilton starter
billet girdles
SFI approved flex plates
ARP main and head studs
Distributor conversion
The colorado has a bigger aftermarket since its in a pickup, turbo & supercharger kits.
The Jeep guys are swapping the 4200 in place of the 4.0 jeep - saving 120 to 150# off the nose. They pick up 120 to 180 HP depending on what they started with. T
I think there are several reasons this motor doesnt get much attention. The aftermarket is so LS crazy right now. Jegs and Summit have everthing on the self to make BIG power. Hell, even the Ford mustang guys a ditching there Ford motors for LS units. The have the new 4 valve coyote will make a ton of power when ever swapped into place. The 4 valve motor could get pricey and doesent have the aftermarket the LS does. The 4200 is really modern motor and poeple want to stay with push rods I guess. Maybe Kooks Headers will stat a trend and thing will look better for this motor.
Is there an aftermarket for the 5 cylinder Colorado engine?
