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what valve springs do u recommend/pressures

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Old Sep 19, 2020 | 11:17 PM
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Default what valve springs do u recommend/pressures

ok super long story short, recommend me a spring or tell me ideal pressures, shims, setup pressures etc......please dont respond with you should ask this person. its Saturday night....

427 with a 7300 shift point, johnson slow leak down short travels, 2.30 titanium intake valve, 1.615 i think hollow stainless exhaust. crower shaft mount adjustable rockers.....
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Old Sep 20, 2020 | 09:36 AM
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What sort of a cam?
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Old Sep 20, 2020 | 09:46 AM
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Originally Posted by RB04Av
What sort of a cam?
hyd roller, LSL lobes so comp grind. .675 lift with 1.8 rockers......

Last edited by Floorman279; Sep 20, 2020 at 10:07 AM.
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Old Sep 20, 2020 | 12:17 PM
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If I were you, I would email PAC racing, tell them your setup, and ask for their recommendation.

My completely amateur guess is they'll suggest their PAC 1207X duals.
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Old Sep 20, 2020 | 04:33 PM
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Originally Posted by Bob570
If I were you, I would email PAC racing, tell them your setup, and ask for their recommendation.

My completely amateur guess is they'll suggest their PAC 1207X duals.
i have the 1207x already. my guy said he couldnt shim them to get 200 on the seat.
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Old Sep 20, 2020 | 07:58 PM
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Manley nextek. 185 to 205 seat. Open will be what it is.
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Old Sep 20, 2020 | 08:14 PM
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the issue is im at 202 on the seat now and still showing signs of float
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Old Sep 21, 2020 | 09:55 AM
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Aftermarket rockers are tough. When i tried running 1.7 yella terras with a tsp cam and tsp .660 springs it would float so bad it wouldn't rev past 6500. Anyway the pac 1207x springs aren't much better if you look at the pressures. I run the 1208x springs now even though I went back to stock rockers for a margin of safety. The next step up from there would be 1209s. Like previously mentioned call pac and see what their recommendations are.
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