LS7 lifter or Comp "R" Turbo car
11-21-2007, 06:25 PM
#1
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LS7 lifter or Comp "R" Turbo car replacing the lifters while the motor is out because i need to anyway, just trying to get some insight on these two. i read some old threads and i was getting mixed reviews.
set up:
7.4 pushrods
stock rockers
Speed Inc. TU1(225/225 .581/.581 113lsa)
thanks guys
set up:
7.4 pushrods
stock rockers
Speed Inc. TU1(225/225 .581/.581 113lsa)
thanks guys
11-21-2007, 10:39 PM
#6
I'm using Comp Rs and Yella Terra Ultra Lights.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
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11-22-2007, 10:08 AM
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vettenuts, i called comp and they did not really seem to know what they were talking about on that. I spoke to my engine builder, he instructed me to get the lifter on the base circle of the cam,bring it to 0lash then 1/2 turn. Im not really a big fan of this method because i think it leaves alot on the table. Its been working for me for about 1200 miles with no issues.
11-22-2007, 10:27 AM
#10
I have all but given up on Comp, the last few times I have called their tech support I have received stupid answers, some of which could have resulted in engine damage. I find Crane's tech support to be a lot more savvy. But they do state specifically on their catalog page for these lifters that the required hot preload is 0.002" to 0.004" hot and that an adjustable valve train is required.
