Anyone use the COMP 978 springs?
03-05-2004, 10:29 AM
#1
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Anyone use the COMP 978 springs? This is from my other post .. suggest valvetrain (see below)
I talked with Jay and he said that the 978s should be good and I can use the stock lifters ... any had any issues? Remember this is for a daily driver ..
...
Suggest valvetrain parts for the following cam: (this is on a daily driver)
I figure I'll rev to 6800 - 7000
.232/.236 .595/.601 114+4
what springs etc do you recommend? These will be in Absolute Speed 5.3L stage II heads..
I talked with Jay and he said that the 978s should be good and I can use the stock lifters ... any had any issues? Remember this is for a daily driver ..
...
Suggest valvetrain parts for the following cam: (this is on a daily driver)
I figure I'll rev to 6800 - 7000
.232/.236 .595/.601 114+4
what springs etc do you recommend? These will be in Absolute Speed 5.3L stage II heads..
03-05-2004, 11:37 AM
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Crowley,
For what it's worth Jay recommended 978's for his Absolute Speed 5.3L stage II heads
for a 230/230 .591/.591xer 114 + 4 cam that I ordered from him last week. We are probably in the same batch, keep me posted of when you get the heads and how they perform.
FYI - AP Engineering also recommended 978's with a 228/232 .600/.600 cam
I think we should be OK with those springs.
Thanks,
For what it's worth Jay recommended 978's for his Absolute Speed 5.3L stage II heads
for a 230/230 .591/.591xer 114 + 4 cam that I ordered from him last week. We are probably in the same batch, keep me posted of when you get the heads and how they perform.
FYI - AP Engineering also recommended 978's with a 228/232 .600/.600 cam
I think we should be OK with those springs.
Thanks,
03-05-2004, 01:32 PM
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Originally Posted by HOSS99
Crowley,
For what it's worth Jay recommended 978's for his Absolute Speed 5.3L stage II heads
for a 230/230 .591/.591xer 114 + 4 cam that I ordered from him last week. We are probably in the same batch, keep me posted of when you get the heads and how they perform.
FYI - AP Engineering also recommended 978's with a 228/232 .600/.600 cam
I think we should be OK with those springs.
Thanks,
For what it's worth Jay recommended 978's for his Absolute Speed 5.3L stage II heads
for a 230/230 .591/.591xer 114 + 4 cam that I ordered from him last week. We are probably in the same batch, keep me posted of when you get the heads and how they perform.
FYI - AP Engineering also recommended 978's with a 228/232 .600/.600 cam
I think we should be OK with those springs.
Thanks,
Since this is my daily driver .. I just wanted to make sure I wasn't on the limit of what my springs could handle ...
I'll keep you posted ... keep me posted as well ..
thanks,
Crowley
03-05-2004, 03:44 PM
#4
I used 987s with my 2.08/1.60 valve heads and TR224/224 cam. I ran them for about 20K miles without any problems but in the last 5K I started noticing a lot of fall off in upper RPM. When I removed my heads this week, every intake valve had touched (slightly).
Doing it again, I would have used Comp R lifters and 977s in the first place.
Doing it again, I would have used Comp R lifters and 977s in the first place.
03-05-2004, 04:06 PM
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978 I have the 978 for sale they are a bump above the 987 and a little less than the 977 I was going to run stock lifters with them.
Went with a head porters springs
The 978 and titainum retainers are still for sale.
They are new !
Went with a head porters springs
The 978 and titainum retainers are still for sale.
They are new !
