bjamick

iTrader: (31)

Ok guys im getting together all the parts that i need for my 347 build.

So far these are the parts i have:
Ported and polished 5.3 heads
LS6 intake
MS4
All bolt-ons.

As for the motor build these are the parts that im planning on buying:
Scat H beams with ARP 2000 bolts
Diamond pistons with 2cc valve reliefs
and all new bearings.


Well my valvetrain is already completely upgraded so now what i need to know is should i go with these LS7 lifters, or some comps? Let me know if any of you guys are running these lifters.

I figured if GM uses them and they are turning the vette pretty high RPM's then i thought they would prob work great for my setup. Lets hear your thoughts.

JPH

iTrader: (2)

Crane #144535-16 lifters, they have been proven to 7200k+ without any pump up or Comp #850-16.

bjamick

iTrader: (31)

ALright guys forgot to say, the most that i will turn this car is prob 6800 and maybe to 7000 on the dyno. Im wanting something that i can get prob 30k miles out of w/o any problems.

Jordan S.

iTrader: (17)

I used LS7 lifters. I'll use them in the next motor too. I like them, I have a high revving 347 on spray. I go past 7 on the juice and it loves it.

quick346

iTrader: (4)

the caddie lifter's *** $220 from speed inc tested to 8500 rpm's can't go wrong with them. i spun my stock ls1 lifter's last year to 6800 a hundred time's top end run's and all .I can't count how many time's i ran it out in third to 6800 before getting o/d

my bitch with the stock one's was they like to drop a lifter when ever they feel like it at idle. did it bone stock.

but at w.o.t no problems

bigsticksupra

iTrader: (3)

if you use the COMP lifters, do you still torque the rocker down to 22 and call it a day?

quick346

iTrader: (4)

what comp lifter's ? the 850's are same as stock but the r series comp comp say's like .004 preload but if you look at patric g's mod list he says what pre load he run's the r's at and i would do the same.
But for me it is the caddie's with a .090 preload i think.

bigsticksupra

iTrader: (3)

yes, the COMP 850-16 lifters

418redz28

iTrader: (10)

imo the cadie lifters are good if gm is using them to spin 7200. i have had a set of the stock comp lifters and i will never buy another set again. they failed

Shawn MacAnanny

iTrader: (12)

I had the stock LS6 lifters in my HC Z06. 465rwhp and 7300 rpm with about 16k on it and all was fine.

SOMbitch

iTrader: (8)

I'm going caddies when i do the H/C swap if I can get'em. I heard they were on backorder everywhere but haven't looked into it yet. If so prolly LS7's since I'm not gonna spin too high on my stock rod bolts anyway.