Scott
Senior Member
Matt, so far the weather here looks pretty good for Sunday. Good luck!
Yes, it's relatively cheap insurance and limiters.Ok not to beat a dead horse but I am putting 127500 cams in this winter and I just want to know 2 things. Should I upgrade my oil pump and should I go with phaser limiters or lockouts? Car is my summer DD if that makes a difference.
Ok not to beat a dead horse but I am putting 127500 cams in this winter and I just want to know 2 things. Should I upgrade my oil pump and should I go with phaser limiters or lockouts? Car is my summer DD if that makes a difference.
The large gap is 1MM less shallow, I have the part here and have measured it, you can see tool marks, it is a stock part which they modified. Clearly the engineers felt this was needed to clean up the signal at high RPM, else they would just do it in calibration. But there will always be someone who thinks he knows better and not change the hardware.
Ok not to beat a dead horse but I am putting 127500 cams in this winter and I just want to know 2 things. Should I upgrade my oil pump and should I go with phaser limiters or lockouts? Car is my summer DD if that makes a difference.
Ok not to beat a dead horse but I am putting 127500 cams in this winter and I just want to know 2 things. Should I upgrade my oil pump and should I go with phaser limiters or lockouts? Car is my summer DD if that makes a difference.

Ok not to beat a dead horse but I am putting 127500 cams in this winter and I just want to know 2 things. Should I upgrade my oil pump and should I go with phaser limiters or lockouts? Car is my summer DD if that makes a difference.
That was my mistake thinking that it went on the front of the crankshaft somewhere.
I obviously don't know nearly as much as most of the people here lol. Just learning
Like tehdixie had said I would go with limiters as you are still able to keep your VCT function and be able to get HP out of it where with lockouts you would loose the VCT and thus the HP that comes with it. On a FI car it isn't that big of a deal but when you are staying N/A every little bit helps. Also if you go with the Melling High Volume Oil Pump you are going to have to go with lockouts as they do not create enough pressure to utilize VCT. I will see if I can dig up the post a little later on that Matt had with IIRC Redfire07GT on the subject if you are interested.
Edit: I found something similar
http://www.s197forum.com/forum/showpost.php?p=1260966&postcount=1000
Guys, guys, guys.... so much bad information. (face palm)
Installing cams and the cam performance has nothing to due with requiring an upgraded/replaced oil pump. I would recommend you replace your oil pump if you are racing regularly, regularly hitting high revs with your car (over 5,500 RPM daily) or if you have high miles and are doing a more causal "weekend warrior" racing. Upgrading your cams will not impact your engine temps, your oiling systems ability to lube your system or VCT performance.
As far as lockouts vs. limiters. The concept is with lockouts you lose some low-end torque... not HP. You should lock them out to avoid piston/valve contact if you are gonna rev it. I had the 127600 in my 2007 with lockouts and it was pretty bad ass.
Check out the two dyno sheets. The top one is with a stock long block with a tune and CAI. The second one is with a CAI, P&P heads, 127600 cams, and AR LT's. The torque curves are near identical with the VCT compared to without.