valvespring question

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Dec 14, 2007 | 07:42 AM

lightemupls1

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valvespring question

plan on doing a tr224 112 lsa cam swap. how much lift will the stock ls1 springs take? and what about rockers and pushrods? will they be ok for this cam?

Dec 14, 2007 | 08:16 AM

sroach20

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From: houston, Texas

you need to change the springs and pushrods, rockers will be fine. you can get some comp 918s for cheap or the patriot dual springs for around $240, they come with springs, retainers, and locks. the duals are a good security blanket, if one spring snaps you will have another to keep a valve from playing pinball in your cylinder. then you can pick any kind of hardened pushrods.

Dec 14, 2007 | 08:31 AM

SOM 02

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From: bay area

if u want 918 springs i have some. springs are used. but has new seats,locks,retainers. posabaly something else. if your intrested let me know. whats a fair price for these springs. the springs are in good shape patriot reinstalled them on my heads. i needed stronger springs so have no use for these. just let me know. thanks

Dec 14, 2007 | 09:30 AM

TA1364

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From: Dayton, OH

Id go with duels no doubt for added security, especially if you drive the car a lot.

Dec 14, 2007 | 09:46 AM

massls1guy

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I went with new PAC 1218's from SDPC (sdparts.com). I would avoid used 918's if I was you given their track record.

Dec 14, 2007 | 10:36 AM

lightemupls1

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gmpp makes a hot cam that comes with ls6 springs and they say you can run the stock pushrods for $415. the duration is 218/227, why is the intake so much less than the exhaust? and what would be the advantage of the tr224/224 over 218/227?

Dec 14, 2007 | 10:48 AM

Ericbigmac83

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Ive got some pac 918's if you want them, got like 1000 miles on them. good to .600 lift

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Dec 14, 2007 | 11:38 AM

memcgraw

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I'm thinking similar cam, just maybe the TR224 114, and I'm a newbie when it comes to LS1 mods....do you recommend going with 5/16" or 3/8" rods? Do you need to stay with 5/16" if stock rockers are retained. The Patriot dual springs look good. Would a change to the Patriot PN 2009 LS1 Stage II heads make sense to do?

Dec 14, 2007 | 11:43 AM

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1970judge

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A nice set of heads to accomodate the cam is always recommended. Heads that flow more than stock are never a bad idea per say but always get a set of heads that match the cam. Pretty parts are nice but only when they work together.