Who makes .700 lift valve springs
01-10-2008, 10:06 AM
#21
12 Second Club
iTrader: (4)
Join Date: Oct 2006
Location: Chesapeake, VA
Posts: 300
Likes: 0
Received 0 Likes
on
0 Posts
I still stand by what I have said. Rev-kits are old-school tech that really doesn't need to be implemented today. I obviously know that you DON'T need a solid roller lifter to turn 7k rpm. My point is that you should want to use a solid roller lifter to MAXIMIZE your performance. I don't care how well a hyd. lifter is designed or whether a big-named company makes it, it will never truely be able to cpe with the abuse of 7k+rpm or .700 lift.
If you guys have combos that seem to work for you keep doing what you do, I don't do what everyone else does or think what everyone else thinks. Willing to think outside the box and try new things with these motors is what keeps you ahead of everyone else.
No offense to anyone who has posted.
If you guys have combos that seem to work for you keep doing what you do, I don't do what everyone else does or think what everyone else thinks. Willing to think outside the box and try new things with these motors is what keeps you ahead of everyone else.
No offense to anyone who has posted.
02-28-2008, 07:21 PM
#26
Comp, PSI,PAC,REV,CRANE, Crower
They all make springs that are good beyond .700 lift. You will need a 1.55 spring pocket and +.200 valve to get the proper installed height on the spring as most require 1.900-2.00 install height for a 230lb seat pressure. A lower install height will raise the seat pressure and it could possibly lead to premature wear on the valves.
They all make springs that are good beyond .700 lift. You will need a 1.55 spring pocket and +.200 valve to get the proper installed height on the spring as most require 1.900-2.00 install height for a 230lb seat pressure. A lower install height will raise the seat pressure and it could possibly lead to premature wear on the valves.
02-28-2008, 07:59 PM
#27
12 Second Club
iTrader: (2)
Join Date: Mar 2004
Location: Jenison, MI
Posts: 478
Likes: 0
Received 0 Likes
on
0 Posts
PAC-1521
150# at 1.800"
440# at 1.100"
Coil Bind at: 1.030"
Max Lift: .700"
Spring Rate: 402#/in
Spring Weight: 95 grams
OD 1.300"
I'm pretty sure they are not available yet
150# at 1.800"
440# at 1.100"
Coil Bind at: 1.030"
Max Lift: .700"
Spring Rate: 402#/in
Spring Weight: 95 grams
OD 1.300"
I'm pretty sure they are not available yet
02-29-2008, 06:50 AM
#29
Launching!
Join Date: Jun 2007
Location: NC
Posts: 212
Likes: 0
Received 0 Likes
on
0 Posts
No still waiting
There are three sets out there being tested in engines right now. Haven't heard any power numbers yet.
03-01-2008, 08:52 AM
#30
here are some specs on our 1.290 spring kit:
1.810 installed height: 145 lbs
@1.190 380 lbs
@1.135 410 lbs
Coil bind 1.060
I don't have exact specs on on spring rate. But I will attempt to find that out.
We do have several customers that run this w/ cams in the neighborhood of .710-.720 lift, and have been for quite some time. HOWEVER our official rating is .690 lift.
1.810 installed height: 145 lbs
@1.190 380 lbs
@1.135 410 lbs
Coil bind 1.060
I don't have exact specs on on spring rate. But I will attempt to find that out.
We do have several customers that run this w/ cams in the neighborhood of .710-.720 lift, and have been for quite some time. HOWEVER our official rating is .690 lift.
03-01-2008, 01:05 PM
#32
FormerVendor
here are some specs on our 1.290 spring kit:
1.810 installed height: 145 lbs
@1.190 380 lbs
@1.135 410 lbs
Coil bind 1.060
I don't have exact specs on on spring rate. But I will attempt to find that out.
We do have several customers that run this w/ cams in the neighborhood of .710-.720 lift, and have been for quite some time. HOWEVER our official rating is .690 lift.
1.810 installed height: 145 lbs
@1.190 380 lbs
@1.135 410 lbs
Coil bind 1.060
I don't have exact specs on on spring rate. But I will attempt to find that out.
We do have several customers that run this w/ cams in the neighborhood of .710-.720 lift, and have been for quite some time. HOWEVER our official rating is .690 lift.
03-01-2008, 01:26 PM
#33
Comp, PSI,PAC,REV,CRANE, Crower
They all make springs that are good beyond .700 lift. You will need a 1.55 spring pocket and +.200 valve to get the proper installed height on the spring as most require 1.900-2.00 install height for a 230lb seat pressure. A lower install height will raise the seat pressure and it could possibly lead to premature wear on the valves.
They all make springs that are good beyond .700 lift. You will need a 1.55 spring pocket and +.200 valve to get the proper installed height on the spring as most require 1.900-2.00 install height for a 230lb seat pressure. A lower install height will raise the seat pressure and it could possibly lead to premature wear on the valves.
what would we do without you??
03-03-2008, 12:56 AM
#34
Or the fact that i have the spring specs and installed heights and setup as well as the valve information that was spec'd By Larry Meaux to setup my heads since he was the one that ported them.
Last edited by ALLBOTTLE; 03-03-2008 at 01:12 AM.
03-03-2008, 01:13 PM
#35
We have 1.300 diameter springs with 230#s on seat. 
Why did you edit that last part out of your original post again?
Why did you edit that last part out of your original post again?
---Quote (Originally by Ryne @ CMS)---
its good that we have internet experts like you around on these boards
what would we do without you??
---End Quote---
Or the fact that i have the spring specs and installed heights and setup
information that was spec'd By Larry Meaux to setup my heads since he was the
one that ported them.
Internet expert or not i am right... so what's your excuse?
its good that we have internet experts like you around on these boards
what would we do without you??
---End Quote---
Or the fact that i have the spring specs and installed heights and setup
information that was spec'd By Larry Meaux to setup my heads since he was the
one that ported them.
Internet expert or not i am right... so what's your excuse?
03-03-2008, 01:22 PM
#36
Do you mind sending/posting the specs?
Im running the Crower 68363 springs with a 459lb/in spring rate.
Last edited by ALLBOTTLE; 03-03-2008 at 01:30 PM. Reason: Adding Crower PN
They said
don't know why it's ok for a SPONSOR to go after a member but if we do the same they threaten us with a vacation.
03-03-2008, 04:01 PM
#39
Launching!
Join Date: Jun 2007
Location: NC
Posts: 212
Likes: 0
Received 0 Likes
on
0 Posts
05-10-2008, 05:03 PM
#40
Teching In
Join Date: Jul 2007
Posts: 37
Likes: 0
Received 0 Likes
on
0 Posts
I have etp heads that have the 700 lift drag springs... they are new. Im only running a .568 lift cam from thunder racing. Id rather not switch out my cam, but im trying to take advantage. What do you think about running a 1.8 rocker with the .700 etp drag springs? Thunder racing says they dont recomend a 1.8 rocker to the ramp rates of their agressive lobes. The guys at thunder racing arent familiar with the etp .700 lift springs, but do you think the spring would break before the rockers? I plan on keeping stock hydraulic lifters in my ls6, and btw, i have a f1r im upgrading to fom my d1sc. Is there a better spring for what im doing, or am I good? Will rockers or springs fail first if i go to the 1.8 if something does fail? Thanks, Brandon