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Re: LA solid cam valve spring recomendations
[Re: 1990A]
#2994002
12/10/21 12:15 PM
12/10/21 12:15 PM
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Joined: Jan 2003
Posts: 1,009 Richmond Twp. Mi.
Mr340
super stock
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super stock
Joined: Jan 2003
Posts: 1,009
Richmond Twp. Mi.
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for the .557 cam the mopar spring recommended is P3412068 https://www.manciniracing.com/mopupto620li.html but depending on your valves you might need something different. On my iron heads I have .100" longer valves so the installed hgt. is more, we went with a Pac spring ( I think 1208, have to ck my notes)and retainers to achieve similar specs to the 068 spring.
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Re: LA solid cam valve spring recomendations
[Re: Mr340]
#2994029
12/10/21 01:02 PM
12/10/21 01:02 PM
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Joined: Aug 2019
Posts: 9,503 Super Spudsville
Mr PotatoHead
Half Baked
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Half Baked
Joined: Aug 2019
Posts: 9,503
Super Spudsville
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What lifters? On the .557 on a small block I use comp 977-16 on beck style lifters set to near CB and if it still made power at 7600 id shift there.
I have used a K motion spring on a set of heads that I needed a spring for a if I recall a 1.900 installed height, it was on the lower end of there offerings id have to look.
STOP POTATO HATE!
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Re: LA solid cam valve spring recomendations
[Re: Mr PotatoHead]
#2994206
12/10/21 10:02 PM
12/10/21 10:02 PM
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Joined: Dec 2021
Posts: 11 MI
1990A
OP
member
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OP
member
Joined: Dec 2021
Posts: 11
MI
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as for lifters i plan to run what comes with the cam as long as there is not something im unaware of better to run i ordered the mopar 3412068 today next choice is the 590 or the 557 i like the 590 profile in my 440 i advanced it a bit when i degreed it in to help the lower end and it still pulls good up high some im leaning towardsit
Last edited by 1990A; 12/10/21 10:03 PM.
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Re: LA solid cam valve spring recomendations
[Re: 1990A]
#2994363
12/11/21 03:32 PM
12/11/21 03:32 PM
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Joined: Jan 2003
Posts: 14,506 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,506
So. Burlington, Vt.
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Basically....... the available spring installed height determines the “group” of spring you’ll be looking at.
Stock SB heads utilizing stock style multi-groove valves end up with a pretty short installed height(1.650”-1.700”)...... and they’re aren’t many choices suitable for the 590 cam with that combo of parts.
Ede heads are a nominal 1.800”........TF heads can be 2.00” with their Ti retainers.
You wouldn’t normally use the same spring for the same cam with those 3 different heads.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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