Anyone running this combo? Was flycutting required?

 

Bump. I’m sure plenty have used this setup..

 

What r the cam specs? Not everyone remembers every speed shops cam of the day.

 

238/242 .600"/.600" 112 or 113 LSA

 

this 112 lsa.

 

Im guessing you already have the cam? If not I would just get something known to fit.
Or sell it and buy another one. MS3's usually dont last long on marketplace.

 

Way to much duration for CI and the RPM limits of the stock intake .
IMO

 

One of my favorite cams. I ran a 111 LSA in my original LS1 and made good power.

 

everything’s back together and should be ready for first fire this weekend. Originally I was gonna run 862s but came across a good deal on the ls3 top end.

 

No fly cutting required... But if this is going to be a street car, expect to be pretty disappointed. I won't sugar coat it for you, but I've tuned more than a couple customer's cars/trucks with this exact setup. The power won't kick in until way up top.

This is why properly matched cathedrals still own gen 4 LS heads at anything 408 ci and smaller. Way more mid range and low range. I personally think most others who chose the setup you have either just through parts together or based their research on Peak HP dyno numbers.

 

You might want to look over this article or at the very least gain some info, it helped me decide which cam to use for my iron LS3.
https://www.hotrod.com/articles/hrdp...gine-cam-test/

 

I think the MS3 is a fairly poor choice for a stock cube LQ4 with an LS3 top end. The intake duration is large for that set up and cube inch and the exhaust split of only 4 degrees isn't ideal for the typical LS3 head. I'd sell the MS3 and get a different cam based on the details provided.

 

Update: engine started right up on Holley term x though the idle was a bit high and rich.After starting right up several times it now won’t start. What are the chances I hurt the valves or bottom end somehow?
will be monitoring fuel pressure tomorrow and pulling the heads to see what’s up.

 

I doubt that you hurt valves or iyou wouldn't have started up several times without knowing something was wrong.