Hello,
i want order Swiftune SW5-07 cam.
I have 12g940 head with 1.5 roller rockers + double springs 160lbs.
Are these 160lbs springs suitable for this cam?
I wrote directly to Swiftune, but nobody replied for a week.
Thank you
Martin
Swiftune Sw5-07, 1.5 Roller Rockers + Double Springs 160Lbs
Started by
MartinML
, Mar 02 2022 12:00 PM
4 replies to this topic
#2
Steve220
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Posted 02 March 2022 - 01:20 PM
Have you tried ringing them?
#3
MartinML
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Passed Test
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Posted 02 March 2022 - 01:31 PM
Have you tried ringing them?
NO, because Google translator won't help me on the phone. 
My English is terrible.
#4
nicklouse
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Posted 02 March 2022 - 01:34 PM
On their page they have related products, which shows their valve springs that give 180lbs at 0.500” lift.
#5
Ethel
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Posted 02 March 2022 - 01:40 PM
I would say they'll be ok. But wait for some more opinions - there wasn't much other choice last time I put an engine together.
High ratio rockers require proportionally lower spring rates.
e.g. 1.25 x 200lbs = 250
1.5 x160lbs = 240
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