New Comp 921 springs ok with stock lifters?
#2
Spring specifications
O.D 1.300"
I.D .655"
135 lbs installed @ 1.770"
400 lbs @ 1.220"
Solid height 1.040"
Spring Rate 407.7 lbs/in
Designed for up to .650" valve lift
I.D chamfered
No machine work required, drops into stock spring pocket @ STD installed
height
High end race quality material and processing used, similar to Nascar
type spring
Round wire inner and ovate wire outer
this hard to find info..so hold onto it
Thanks,
Brian
O.D 1.300"
I.D .655"
135 lbs installed @ 1.770"
400 lbs @ 1.220"
Solid height 1.040"
Spring Rate 407.7 lbs/in
Designed for up to .650" valve lift
I.D chamfered
No machine work required, drops into stock spring pocket @ STD installed
height
High end race quality material and processing used, similar to Nascar
type spring
Round wire inner and ovate wire outer
this hard to find info..so hold onto it
Thanks,
Brian
#3
135lb @1.770 400lb@1.220
Dual spring 1.300 inch Diameter
I have gone with these springs on new setup they have arrived this week.Motor should be in and running in three weeks.I went with the Comp R lifters for these springs mainly due to rpm I want to run and the spring pressure on these is higher than what 99% of what everybody is using for springs at the moment.
Dual spring 1.300 inch Diameter
I have gone with these springs on new setup they have arrived this week.Motor should be in and running in three weeks.I went with the Comp R lifters for these springs mainly due to rpm I want to run and the spring pressure on these is higher than what 99% of what everybody is using for springs at the moment.
Last edited by GTBMad; 11-06-2003 at 12:58 AM.
#5
I think you need to ask the manufacturer of the springs they are pretty new on the market, more the question who here is running a similiar pressure spring withthis lift with standard lifters.
Personally the cost of these springs is nearly double compared to other duals on offer why compromise for an extra couple of hundred dollars if you are looking at a budget setup you would be better of with 987 with stock lifters.
Personally the cost of these springs is nearly double compared to other duals on offer why compromise for an extra couple of hundred dollars if you are looking at a budget setup you would be better of with 987 with stock lifters.