EvilC Posted September 22, 2008 Share Posted September 22, 2008 So after my little meeting with the wall @ the track, I had some work done on the Z. -Double Row Timing Chain -Port N polished Oil Pump -Mild Cam -PushRods/Springs/Retainers -Connect Cylinder Heads (better cooling) -New SS 3 inch Exhaust -Redid the Intake -New DS Here is the Dyno Sheet: 388 rwhp 372 rwtq I had the tuner give a conservative tune so that the motor will last me some time. Mike at NewEra is a great guy and his guys do great work and take the time to answer any question. They even met me at the shop on their day off so I can pick the car up. The car drove back from Rochester to NYC area 6+ hours with no problems. It feels like I just got the car on the road again!!! This winter I will do the UD pulley and I am done with modding the motor. I will add the specs of the cam later today when I get home. Clive Quote Link to comment Share on other sites More sharing options...
cygnusx1 Posted September 22, 2008 Share Posted September 22, 2008 Clive, could you include some glasses I could download to read your chart? Better yet, stop by the house so I can test it with my butt dyno. Quote Link to comment Share on other sites More sharing options...
EvilC Posted September 22, 2008 Author Share Posted September 22, 2008 Dave, I can't get the chart to size correctly. The other scale is large and doesn't fit well. You can right click and save it so you can see in on your own pc. Sorry guys for the small font. Clive Quote Link to comment Share on other sites More sharing options...
aziza z Posted September 22, 2008 Share Posted September 22, 2008 Very cool. What cam did you go with? (I ask because ive started looking into cams lately) Quote Link to comment Share on other sites More sharing options...
JMortensen Posted September 22, 2008 Share Posted September 22, 2008 These motors really seem to like these cams that peak at about 6000 rpm. Is it just valve springs that are required to spin them to 7000? You'd be able to make better use of the power if you could get to 7000 safely... Quote Link to comment Share on other sites More sharing options...
ColtGT4g63 Posted September 22, 2008 Share Posted September 22, 2008 Not too many people spin these motors to 7k in general. Some do, most don't. The upgraded valve springs are to allow the additional lift created by the bigger cam, not so much for reving higher. Quote Link to comment Share on other sites More sharing options...
Slammed68 Posted September 23, 2008 Share Posted September 23, 2008 I went with the Texas Speed 228R for everyday driveability and a nice smooth lope. You can definitely tell its cammed though. Made quite the bit of difference in power. I set my rev limiter to 6500 on the LQ4 6.0 with ARP rod bolts and the new 918 "bee-hive" springs. These engines definitely keep on pulling all the way to 7K. Quote Link to comment Share on other sites More sharing options...
heavy85 Posted September 23, 2008 Share Posted September 23, 2008 So why do people port and polish the oil pump on these things. Seems to be popular but I cant figure out why? Cameron Quote Link to comment Share on other sites More sharing options...
kiwi303 Posted September 23, 2008 Share Posted September 23, 2008 So why do people port and polish the oil pump on these things. Seems to be popular but I cant figure out why? Cameron My guess is: Mechanical pump that uses engine power to push the oil around, a nice smooth polished surface has less friction and lets the oil flow better and the porting does the same thing as with head porting for the air/fuel mix. This means less power needed to push more oil around, plus more oil pushed around means less chances of having something sieze from under-lubrication. You're home free two ways Quote Link to comment Share on other sites More sharing options...
cygnusx1 Posted September 23, 2008 Share Posted September 23, 2008 Clive, post the original scan (full size) into your smugmug account which will automatically resize it into about 5 different resolutions. Then pick a larger one from smugmug and link the url here with image tags. Quote Link to comment Share on other sites More sharing options...
heavy85 Posted September 24, 2008 Share Posted September 24, 2008 My guess is: Mechanical pump that uses engine power to push the oil around, a nice smooth polished surface has less friction and lets the oil flow better and the porting does the same thing as with head porting for the air/fuel mix. This means less power needed to push more oil around, plus more oil pushed around means less chances of having something sieze from under-lubrication. You're home free two ways I'm not buying it. If that is the theory then it's a waste of money IMHO. Anyone know the flowrate of an LS oil pump? Thanks Cameron Quote Link to comment Share on other sites More sharing options...
Bigdeezs Posted September 24, 2008 Share Posted September 24, 2008 I think the ported oil pumps started because of oiling issues and pump failures the LS motors suffered from in 98-99. The oiling issue was said to be fixed by most 2000 motors and not a problem in the 01-02 motors. I have a couple 2000 motors and replaced the pumps with the Z06 pumps just in case and upgraded to LS2 timing chains. Quote Link to comment Share on other sites More sharing options...
pete280z Posted October 14, 2008 Share Posted October 14, 2008 Did you ever find the specs on your cam? Quote Link to comment Share on other sites More sharing options...
EvilC Posted October 16, 2008 Author Share Posted October 16, 2008 Did you ever find the specs on your cam? lol, forgot all about this post sorry. Cam Specs: 228/232 111 .632/.600 The next two mods are the FAST intake and UD pulley. Then another Dyno tune and I am done! Quote Link to comment Share on other sites More sharing options...
Bigdeezs Posted October 16, 2008 Share Posted October 16, 2008 In your OP you said "mild cam"...LOL with those specs, I'd say closer to wild than mild Quote Link to comment Share on other sites More sharing options...
janaka Posted October 16, 2008 Share Posted October 16, 2008 That is a decent sized cam for sure. I think the 22X cam durations to be 'mild' on these motors and sub .600" lift... .630" lift is a boat load. I'd love a larger image of that graph to look at. To me it looks like torque peaks very quick and dies off just as quick. I'll have to take a look at mine at home (not making quite as much power) and see if my graph looks like that also. Quote Link to comment Share on other sites More sharing options...
EvilC Posted October 17, 2008 Author Share Posted October 17, 2008 LoL, well I guess it was mild compared to the other cams I was looking into. Didn't want to me the car unstreetable....unstreetable, real word? lol Here is a larger image of the chart: Quote Link to comment Share on other sites More sharing options...
cygnusx1 Posted October 17, 2008 Share Posted October 17, 2008 In your OP you said "mild cam"...LOL with those specs, I'd say closer to wild than mild You don't know EVILC do you? He is a perpetual sandbagger I wouldn't be surprised if he doctored those charts to read 200hp low! Quote Link to comment Share on other sites More sharing options...
cannonball55 Posted October 26, 2008 Share Posted October 26, 2008 The cam in the stock ls3/480hp is Camshaft: (88958733 -LS "Hot Cam") Hydraulic roller .525" Intake lift, .525" Exhaust lift, 219° Intake duration, 228° Exhaust duration, 112° Lobe seperation Which seams kinda mild to me with only .525 lift. yet gm calls it their "hotcam". Yet the thing has great power curves. heres dyno page link http://paceperformance.com/ProductImages/manufacturer/gm/images/19171224Dyno.jpg Should i stick with this stock cam or upgrade and make more power? I hate to install the motor if i'm gonna want to change the cam but I also hate to install a cam and kill the 2 year warranty. Thanks, Stewart Quote Link to comment Share on other sites More sharing options...
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