[Mr. Red Pony]

Ok, I want to get stiffer valve spring; because to my understanding it can raise your redline, hp, and torque. I want to know what are good springs to get and what kind of retainers I need to get if any. I have heard the LS1 springs work great?

I am clueless to the technical aspects.

[Codeman]

LS6 valve springs spring 12499224 Vortec 4.3 3800 V6: eBay Motors (item 160401704353 end time Jun-05-10 11:25:58 PDT)

These are the springs that you will want. they are from the ls6. and you will need to use gt retainers and then you will have the correct installed height. as far as gaining anything. you can rev higher and those springs are good until .55 lift. but you won't gain much. the stock cam only makes power to around 5400 rpms maybe 5700 rpms if your lucky. and the stock springs will work fine for that. if you plan on going with a cam in the near future and have your heads off, why not replace the springs with those ls6 ones. and then get a cam and follow the recommended specs for rpms. the cam manufacturer should say like range 2000 rpm - 6300 rpm and this is where your cam will make its best power.

[Mr. Red Pony]

Man, now that im trying to get power from major mods, i'm learning so much. Its confusing the shit out of me!! lol

[Mr. Red Pony]

Ok, I think i'm about to buy this set of springs you just linked. Should I?

[rfcsoulja]

. . . You really won't set much of any gains by doing it, but its your money. Do what you want. Roller rockers will help free up some horsepower and will help with increasing rev limit. I'd get those before I get springs unless you're planning on getting a cam sometime soon (or both at the same time).

[ESG-642T]

I don't think valvesprings and major mods go together in the same sentence.


They won't do anything for you.

[rfcsoulja]

Originally Posted by ESG-642T I don't think valvesprings and major mods go together in the same sentence. They won't do anything for you.

When it comes to revving higher, isn't it the rockers that are limiting?

[ESG-642T]

Originally Posted by rfcsoulja When it comes to revving higher, isn't it the rockers that are limiting?

valve springs.

My stock rockers see 6500 weekly.

[rfcsoulja]

Originally Posted by ESG-642T valve springs. My stock rockers see 6500 weekly.

K cool. I've heard a few different things. Thanks for clearing that up for me.

[Mr. Red Pony]

Well I needed new vale springs anyways because 7 of them were not to the proper unloaded height. they were about 2mm shorter... and I tried to rinse them off (stupid) and they rusted. OEM replacements were 189 for a set of twelve when I got a set of 12 ls6 springs for 62.

[Codeman]

Don't forget your GT retainers. Otherwise your installed height will be way off! And really the only thing roller rockers do is reduce friction and wear on the valve stem. They make it easier on the engine when you hit high rpms. I myself think that they are a waste of money unless your upgrading to 1.8s for the added lift, or building a car and you want the max hp possible. I would put them on last because they are relatively easy and a 350 well spent elsewhere.

[Mr. Red Pony]

Alright. The retainer is the disk at the top of the valve stem?

[rfcsoulja]

Originally Posted by Codeman Don't forget your GT retainers. Otherwise your installed height will be way off! And really the only thing roller rockers do is reduce friction and wear on the valve stem. They make it easier on the engine when you hit high rpms. I myself think that they are a waste of money unless your upgrading to 1.8s for the added lift, or building a car and you want the max hp possible. I would put them on last because they are relatively easy and a 350 well spent elsewhere.

See, I've heard different. I've heard that bolt on wise, roller rockers, udp, and the windstar are the 3 you will feel the most (besides rear end mods).

[Codeman]

See, I've heard different. I've heard that bolt on wise, roller rockers, udp, and the windstar are the 3 you will feel the most (besides rear end mods).

That is true if you are talking 1.8 ratio roller rockers. Because you won't gain any hp really from 1.73 rollers which is the stock ratio. The added gain from 1.8s is due to adding more lift to your stock cam. And that is the gain in hp you feel.

And yes the retainer is at the end of the valve stem.

[Mr. Red Pony]

where would I get 1.8? SSMS has 1.7

[rfcsoulja]

Originally Posted by Codeman That is true if you are talking 1.8 ratio roller rockers. Because you won't gain any hp really from 1.73 rollers which is the stock ratio. The added gain from 1.8s is due to adding more lift to your stock cam. And that is the gain in hp you feel. And yes the retainer is at the end of the valve stem.

I realize the benefits from changing to a higher ratio rocker. My thought was that roller rockers are more efficient than our stock ratio rockers, thus freeing up some hp (whether they are a higher ratio or not). So yea, 1.8s would get you a greater gain, but stock ratio roller rockers themselves are lighter and more efficient than our stock rockers. There IS a hp gain from adding roller rockers (even if its the stock ratio). 8-10hp por Tom Morona (probably more like 5-7). Like I said though, this isn't from first hand experience, just the word on the street. I plan on buying a set pretty soon so I'll let yall know if its true or not.

Originally Posted by Mr. Red Pony where would I get 1.8? SSMS has 1.7

Moronav6racing.com

[Codeman]

You can get them from try googling tom morano and they sell them. And on a 99-04 you will gain around 10 hp. They are a decent mod.

[Mr. Red Pony]

So they are a direct bolt on?

[rfcsoulja]

^yes. I think you might need hardened pushrods with rr's though. You may wanna check and see.

[ESG-642T]

I'll take the 1.7s correct geometry for our engine ftw!