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What valve springs for summit 6401 #2545939 09/05/18 12:27 AM 09/05/18 12:27 AM
Joined: Jun 2007 Posts: 337 Colorado 6 67plymouthman OP enthusiast
67plymouthman OP enthusiast 6 Joined: Jun 2007 Posts: 337 Colorado	My motor is a 400 with 9.5:1, auto, in a b-body. WHAT spring works? Thanks Last edited by 67plymouthman; 09/05/18 01:13 AM.

Re: What valve springs for summit 6401 [Re: 67plymouthman] #2545940 09/05/18 12:28 AM 09/05/18 12:28 AM
Joined: Jun 2007 Posts: 337 Colorado 6 67plymouthman OP enthusiast
67plymouthman OP enthusiast 6 Joined: Jun 2007 Posts: 337 Colorado	That's the 465-488 lift cam.

Re: What valve springs for summit 6401 [Re: 67plymouthman] #2546041 09/05/18 09:54 AM 09/05/18 09:54 AM
Joined: Jun 2008 Posts: 3,916 usa L lewtot184 master
lewtot184 master L Joined: Jun 2008 Posts: 3,916 usa	crane 99839-16 springs set at 1.80" installed height are what I've used. these will work with stock retainers and maintain retainer to seal clearance. don't use stock springs.

Re: What valve springs for summit 6401 [Re: 67plymouthman] #2546217 09/05/18 03:20 PM 09/05/18 03:20 PM
Joined: Jan 2003 Posts: 13,357 Marion, South Carolina [><] an8sec70cuda I Live Here
an8sec70cuda I Live Here Joined: Jan 2003 Posts: 13,357 Marion, South Carolina [><]	Comp 911 CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax

Re: What valve springs for summit 6401 [Re: 67plymouthman] #2546222 09/05/18 03:27 PM 09/05/18 03:27 PM
Joined: Jan 2008 Posts: 4,254 Canada WO23Coronet master
WO23Coronet master Joined: Jan 2008 Posts: 4,254 Canada	I used the trickflow springs that were recommended by Summit (it was in a tab at the bottom for recommended parts on the Summit site)

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