My buddy wants to do this to his older muscle car to see if it will make a difference, he wants to retard the cam 5*.

i know there is a way to do this. Just not sure how

i know you need a degree wheel to degree the cam in and dont you need some little key way things to change on the top gear of the timing chain

BTW, it has a hydraulic roller cam.

Any help is appreciated

 

you need to get a 3 way double roller timing set, and set it at 4 retarted, you must take off the water pump, front cover and assorys in the front.

 

what do you mean by 3 way?

are you talking about the timing gear that is on the crank?

a little more explaination please

 

yeah the crank gear, it has 3 key slots in it retarded for more hp, advanced for more torque and straight up. if it has an aftermarket cam it may already have some retard or advance ground into it. i think alos you can use offset bushings for the cam gear dowell, but have never done it.

------------------
ICON Motorsports
1st & 3rd
MM Black Diamond 538 F&AM

 

sweet, he has one of those. Now one more thing, how can the marks on the crank gear make that big of difference?

thanks

 

It's not the "marks" that make the difference! It's the way the camshaft spins in relation to the crank. It's like turning your distributor a couple of degrees back and forth. Same thing with the cam, but to do that you have to reposition the crank gear to get it to advance or retard.

------------------
1992 Z28 5.7 TPI

ZZ4 longblock
Harland Sharp roller rockers
Accel base and SLP siamesed runners,
52MM SLP Throttle Body
Hooker Headers & Flowmaster catback
MSD6A ignition
aluminum driveshaft
World Class 5-speed

 

They make offset bushings that you can use as well. You have to drill out the hole where the gear goes onto the cam to fit them but that's about it.

 

just so i'm clear on this:

we can look at the box his timing chain came in see which mark is for retarded and put the crank gear back on that way.

then line up the dots again and the cam will now be retarded?

just double checking so i understand before we go do it and screw it up

 

Dude, if you are going to pull the front cover off, For *** 's sake spend the extra hour and $100 to pull the intake and put in an aftermarket cam. You can get maybe 4-5 HP by retarding the cam, all at the expense of low end, while you could get 45+ out of a well chosen cam while retaining normal driveability.

 

it already IS and aftermarket cam.....just want to see the difference. its my buds

also, you find me a HYDRAULIC ROLLER for $100 and i'll buy it