I have been doing some researching and I see alot of people getting the 228r and some people arguing to go with 112 lsa or 114 lsa. The way I am seeing it is I don't like to rev my motor high and I want my power sooner so I want the lower lsa. So I was thinking, would 110 lsa be more for what im looking for? I am getting a 3200 circle d this month and getting it in. I will be ordering the kit from tsp and I was wanting some input from you guys. Btw im looking more for 1/4 power not top end, but I would also like the top end to improve. Idk if 110lsa would be to low or if it would be harder to tune and stuff? The highest I want to rev the motor to is 6400. What do you guys think about that idea?

 

subscibed, i have the same question, but with a 233/239 on 111 lsa.....i don't care at all about going airplane speed on the freeway, i want a neckbreaker

 

112, i had a 114 and i didnt like it.

 

114 i made peak power at 5989rpm so im guessing a little lower with the 112. the numbers on my sig are with my current torquer v2 ground on a 112. peak power at 6100.

 

The 112LSA will have 4* of overlap at 0.050, whereas the 110 will have 8*... yes it will be a little rougher.

Where it makes power peak is going to depend on ICL (as well as intake, heads, and exhaust to some extent)... so it sort of depends. I think they are ground with the default Comp 4* of advance.

I would be tempted to try a 224/228 110LSA(+0) if you want XER lobes.

 

Rougher idle sounds better 112 is what i would get.

 

i got the 112 and love it has tons of torque and i shift it at 6400. puts a smile on my face every time

 

I had that cam on a 112 with a 3500 stall and it would launch hard off the line

 

besides the overlap, as above there may be a difference depending on what ICL you pick for the 110.

In general, the 110 will have have slightly higher peak power but will fall off faster after peak. I don't think it will be night and day since you are talking a couple degrees. If you start throwing advance or retard in there you might see more of a difference... I don't know what the "default" amount of advance there is on the 228R, and if you chose a 110LSA it would be a custom cam so you could spec the ICL of your choosing (or someone at TSP could help you out with that).

 

To clarify...

Say you are comparing a 228R with 110LSA+0 to a 112+2 (2 degrees advance so 110ICL as well)... real guru's stop me if I post complete nonsense below:

Quick and Dirty Cam Calculator Spreadsheet
________________________________________0.006 __ 0.050 __ 0.200
Intake Duration - ID_______________________ 277 __ 228 __ 149 XER 3724
Exhaust Duration - ED______________________277 __ 228 __ 149 XER 3724
Lobe Center Angle - LCA (also known as LSA) 110 __ 110 __ 110
Intake Centerline - ICL____________________ 110 __ 110 __ 110


Intake Valve opens - IVO___________________28.5 __ 4 __ -35.5 BTDC (- indicates ATDC)
Intake Valve closes - IVC__________________ 68.5 __ 44 __ 4.5 ABDC
Exhaust Valve Opens - EVO_________________ 68.5 __ 44 __ 4.5 BBDC
Exhaust Valve Closes - EVC_________________ 28.5 __ 4 __ -35.5 ATDC (- indicates BTDC)
Exhaust Centerline - ECL___________________ 110 __ 110 __ 110
Overlap__________________________________57 __ 8 __ -71 degrees

________________________________________0.006 __ 0.050 __ 0.200

Intake Duration - ID_______________________ 277 __ 228 __ 149 XER-3724
Exhaust Duration - ED______________________277 __ 228 __ 149 XER-3724
Lobe Center Angle - LCA (also known as LSA) 112 __ 112 __ 112
Intake Centerline - ICL____________________ 110 __ 110 __ 110


Intake Valve opens - IVO___________________28.5 __ 4 __ -35.5 BTDC (- indicates ATDC)
Intake Valve closes - IVC__________________ 68.5 __ 44 __ 4.5 ABDC
Exhaust Valve Opens - EVO_________________ 72.5 __ 48 __ 8.5 BBDC
Exhaust Valve Closes - EVC_________________ 24.5 __ 0 __ -39.5 ATDC (- indicates BTDC)
Exhaust Centerline - ECL___________________ 114 __ 114 __ 114
Overlap__________________________________53 __ 4 __ -75 degrees

_________________________________________0.006 __ 0.050 __ 0.200

IVO delta__________________________________ 0 __ 0 __ 0
IVC delta__________________________________ 0 __ 0 __ 0
EVO delta__________________________________ -4 __ -4 __ -4
EVC delta__________________________________ 4 __ 4 __ 4
ECL delta__________________________________ -4 __ -4 __ -4
Overlap____________________________________ 4 __ 4 __ 4

I apologize if the formatting didn't come out. As you can see since the intake valve opens and closes at the same time for these two cams they will have a somewhat similar location for peak power and torque. They will make identical dynamic compression. However the total overlap is different and the location of the exhaust valve events is different.

For the 110+0, the exhaust valve opens at 44* (0.050) BBDC compared to 48* for the 112+2. That means the 110+0 should make slightly more torque because of the slightly longer power stroke. The difference in the 8 degrees of overlap for the 110+0 versus the 4 degrees for the 112+2 means that the 110 will idle rougher, have a little less idle vacuum... the 110 should also carry power a little better past peak since it has a little more overlap and the overlap is centered right at TDC, whereas the the 112+2 is centered slightly before TDC.

All in all there won't be a tremendous difference but there will be a difference nonetheless. If you start throwing the 110 and the 112 on vastly different ICL's than the comparison would depend on which ICL you pick for each one.

 

Good news those we have tons of camshafts on big time special right now & both of those LSA's are available!!

 

I like the sound of that! How come nobody answers the phone when I call your shop? I'd like to pick someones brain about cam selection before I start throwing $$$$ your way.

 

Nevermind :
https://ls1tech.com/forums/ls1tech-s...riday-pri.html

 

I noticed that to bad im not doing my cam swap for a cuple more months

 

Ok decided I have a couple more questions lol. How much will thee 228r 112lsa help on the top end like 110-170? Will it give an actual higer top speed? And most importantly what is the best point to shift with this cam?

 

Anybody know any of those questions ?^^

 

Hey z99 I am in the process of H/C swap with that exact cam (110 LSA). I will post up some videos and give my thoughts once I get it finished on Thursday.

 

1. Yes.

2. Yes.

3. 200-300RPM past power peak... so that will depend on where the peak actually is on your motor. If you do a 228/228 on a 112 LSA with 4 degrees of advance it, the IVC is 42* ABDC... so I think like a 6100-6200RPM peak. With 2 degrees of advance it would be something like a 6300-6400RPM peak.

 

So lets say I buy the 228r 112lsa from texas speed. Do they come with the 4 degrees of advance or 2 degrees of advance?

 

I don't know what the shelf grind is or if they have both. I would call them.