Degreeing needed on 2.3?

[MichaelSuch]

Hey guys I just dropped off my block, crank, and pistons at the machine shop to have it clearanced, bored, balanced, and assembled. I'm trying to get everything I need to finish the assembly when I get it back. So far I've got:

2.4L 6 bolt crank
4g63 6 bolt block
8.8:1 Wiseco stroker pistons
Manley Rods
FP2 cams
New oem 4g63 front case w/ oil pump
OEM t-belt, tensioner, and bearings
OEM water pump

I know the FP2 cams are drop in with the 2.0, will I need to get adjustable gears and degree these on the 2.3? I have no idea on how to degree cams. I looked for a writeup but it looks like the original post was deleted.

 

[99gst_racer]

Yes, ANY engine could benefit from degreeing in the camshafts.

I'll be degreeing mine within the next couple months, and I'll definitely be posting a detailed write-up here about it.

 

[TunaTalon]

A camshaft's job is to open and close the valves at the right places in the piston travel. However, a camshaft has no idea where the pistons are, only the crankshaft angle. If the cam is in an engine with the rod and stroke it was designed for all is well. However; the velocity/position of pistons v crank angle in the 2.3 is not the same as the 2.0 4G63 because the rod ratio is different.

If the rod/stroke ratio is different from the cam's design the valves will open and close at different piston locations from the intended design. That's the reason for the existence for the FP3X cams. They were designed for stroker engines with 100mm stroke and stock rods.

If you choose a cam designed for the 2.0L in a 2.3L it will benefit from being adjusted for your choice of torque profiles.

 

[MichaelSuch]

I just read on FP's web-site. The FP3 and FP3x are designed for the stroker correct? The 3x just has more lift? So if I were to go with either of those cams then they would be drop it for the most part? I'm just worried about degreeing as I have never done it before and the process does not appear that simple.

 

[SOADweskey]

If you can find the 3 or the 3x cams then yes but FP no longer makes them. I am running the 4R cams on my 2.3 and I just have them installed at 0deg and they are working fine. I was hoping to have time to play with the cam timing last time I was on the dyno but we didn't get around to it.

 

[TunaTalon]

Cams designed for the 2.0L will still work on the 2.3L they just will be a little less aggressive than when installed in a 2.0L

I put adjustable cam gears on with my stroker conversion but with the 4300 RPM stall torque converter the engine didn't spend enough time at low RPM to get any useful information from the Dyno.

In any event I wanted all compromises in favor of low end torque and my 264/264 cams installed straight up work fine.