verbs

I'm getting valve float with my Comp 987 and YT rocker combo, and am looking to switch it up with something stronger. I'd like to reuse my stock lifters though, and not pay out the ***. I may switch to a G5X-2 cam in the near future, so they must be able to handle .610 lift and the extra weight of the Yella Terra.

I was looking into three spring types.

One was the Comp 977 because I can just swap the springs and retainers, but I saw that Damian felt these would collapse my stock lifters. I would have them setup at 1.875"-1.900" pocket height.

Also looking at the Comp 921 springs, but these bastards are expensive as hell!! Over $500 for the whole kit.

Lastly, I eyed the Crane 144832 double springs because the whole kit is only $380 for everything, and are supposedly as good as the Comp 921's.

Anyone have any other suggestions? Will my choices work with comp lifters?

jrp

iTrader: (16)

though they are pricey i'd get the 921's, you seem to already have a very nice setup, why go cheap on springs. i'd want to protect my investment but thats just me.

you can also check out the new patriot springs if you want, think there good for .650 lift.

gomer

iTrader: (13)

I'd go with the new stock diameter patriot "gold" dual springs. Terry has them at a hell of a deal with Ti retainers. I'm running them with my TSP231/237 with no problems.. also using YT's and stock lifters.

Cstraub

iTrader: (1)

Just put a set of restrictor pushrods in the engine. Ed Curtis at Flowtech developed these 3 years ago and I had them made for him.. cures the valve float in the 5.0's and you can run some spring pressure.

Cstraub

94form2000z

iTrader: (10)

Mind sharing the price on that deal? Or a link to it.. please.

verbs

I've never heard of these before. How do they differ from my hardened pushrods, and how much do they run?

94form2000z

iTrader: (10)

Got my attention as well.

Damian

iTrader: (89)

Me 2. Let's hear it....

Cstraub

iTrader: (1)

A pushrod on one end is die formed solid so there is no hole. Then with an EDM machine an orfice of .030" is drilled into the pushrod. Normal is .080" The EDM end is now put towards the lifter. By restricting the oil flow, this maintains the needed oil pressure on the top side of the plunger in the lifter. Hense the lifter can't PUMP UP. Ed's .500" lift stockers have successfully spun to 8000 rpm in the 5.0 realm. Cost is around $160.

Cstraub

RutanZ28

I run the REV dual springs with titanium retainers with my G5X2 and I have no problems with valve float and I haven't collapsed any of my stock lifters. I got the springs with the cam from LGM.

gomer

iTrader: (13)

For the springs, spring seats, ti retainers, and valve seals it is $295

94form2000z

iTrader: (10)

Hmm why the new valve seals.. wander if it is cheaper without them.

jrp

iTrader: (16)

you need new vavle stem seals because you have to remove the old ones to change the seat. there only like 16 bucks, so its not like they add significantly to the cost.

Chicago Crew UnderBoss

iTrader: (1)

Man, great price on the Patriot drop in gold springs that GOMER is running. IF those prove to be as good as they are touted to and prove themselves over the long haul to be satisifactory battled tested (street and strip), then those springs for that price seem to be the way to go and hopefully turn out to be the cat *** drop in springs for high lift Lsx motors!!!

BlackWS602

I would look into Comp 921's

verbs

I may do that anyway.

I don't feel comfortable with the patriot springs as I don't see much of a history behind the product, but I would really like to hear more about these pushrods. The comp 921's do sound nice and I could probably transfer them to any head I have.

Cstraub

iTrader: (1)

What else do you need to know about the pushrods, they are .080" wall 4130 Seamless chromemoly tubing. Common among the 5.0 restricted to hyd rollers. I'd say Ed has been selling them now for 4 years and to my knowledge he has never had a failure.

Chris

verbs

I guess I'm wondering if anyone with valvefloat in an LS1 has tried them. I'd just hate to slap em in and still get valve float

Cstraub

iTrader: (1)

Yes I have made some for the LS1's. Now for who, I have no idea. They were a referral from another cam company but I think I referred the individual to Ed at Flowtech. He may remember. I have done some for the marine industry with the same results, able to maintain a constant of 5000 to 5500 rpm without the float.

Chris

verbs

My float isn't occuring until about 6500rpms...and it happens from 6500-7000rpms. Will the pushrods only help float up to a certain extent or will it cure it completely? I also am wondering if these pushrods will end up putting more strain on the spring, possibly causing it to break.