My PCM is tuned with rev limiter set at 6500 RPM. I have removed my Accel 300+ that has adjustable rev limiter.

The 355 LT1 engine went into my 1993 Jeep Wrangler YJ without the Accel 300+. When sand driving, hill challenge, it will go to rev limiter almost each time I climb a big hill.

Will the 6500 RPM be safe on the engine or should I install the Accell 300+ and set it at 6250RPM or maybe 6000 RPM.

I know it's not a Jeep Forum but I am in for the LT1 stuff, so, easy on me.

 

you should be fine at 6500.

 

If it has stock springs, I wouldn't spin it that high.

my 2 cents

 

It has TPiS ported LT1 heads part# 500-511 with springs good for 0.600 of lift. Also, I have the following in the build of the engine:

Trickflow conrods pt no TFS-36570500
Speed Pro pistons pt no TRW-L2417F30
Rings pt no SLP-E-251K030
High volume oil pump MEL-M55HV
Cyl head bolts ARP-134-3601
Main bearing bolts ARP-134-5001

But maybe I should check if there is any benefit from revving to 6500 RPM with the ZZ9 cam.

Should I worry about bottom end at 6500RPM.