gbkglenn

I just had my head ported and put in new vavle springs and retainer and new stage 2 cams from ZZP. WHAT size pulley is safe for my set up? I have a 2.9 now Some say 3.0 , 3.1 I need some help i'm put my car back together this week when the cams come in.

Thanks Glenn

redcobalt07

iTrader: (18)

Do you have aftermarket rods and pistons?

gbkglenn

no its all stock until i blow it up

Spanky's Monkey

iTrader: (6)

i'd think on the 3.0 you'd be less likely to blow it up anytime soon.

gbkglenn

Ok I no I will gain hp with the, but will i lose hp with the zzp stage 2 cams ?

Spanky's Monkey

iTrader: (6)

you won't lose power but you won't be spinning the engine fast enough to make em worth it without the neutral balance shafts.

gbkglenn

I ask zoom if I would need the balance shift and he said .now im new to alot of this what is a balance shift ? my car is a automatic

Spanky's Monkey

iTrader: (6)

if you're looking to bump the rev limit up to 7800-8000rpm the stock balance shafts are not really going to be all that helpful at that point. personally i wouldn't do it as the balance shafts were not designed for that type of performance hence the reason why the guys looking to spin up to 8000rpm get rid of em.

conerboner

iTrader: (4)

I'm safe to go up to 7000 with the balance shafts and 78 # valve springs tho right?

gbkglenn

ok were do i get this from zzp ? i no my rpm is at 7k now when vince tune my car. is this something that need to be done before we install the cams and is it hard to do?

Spanky's Monkey

iTrader: (6)

yep, you're good to go.

the problem with the stock balance shaft is that it balances the engine up to the point that it becomes counter-productive at very high rpm.

Spanky's Monkey

iTrader: (6)

zzp does sell the neutral balance shaft or there are other companys with either the neutral shaft or a shaft delete. be wise and go with the neutral balance shaft. the engine must be removed from the car to do the balance shaft swap and vince can do the tune for the rpm bump.

gbkglenn

so are you saying that i need one or not? if so where do i get one zzp ? and do i put this on before cams

gbkglenn

so are you useing your stock one?

Spanky's Monkey

iTrader: (6)

i'm using stock and my redline is 7000rpm. i don't ever plan on spining to 8000rpm so i won't have a need for cams or neutral balance shafts.

you don't have to put the neutral balance shafts in your car before the stage 2 cams. that being said, if you don't use the nbs you will risk your engine by spinning @ 8000rpm to take advantage of the power shift that the stage 2 cams provide. in which case i would not reccommend spinning the engine that fast on the cams alone.

gbkglenn

thats more trouble than i what to go through or les you think i need to. i don't race my car mainly for fun but if need be i will

gbkglenn

so im i wasting my money on the cams ? vince will no how far i can go to be saf with rpm ? is my set up ok if tell me

Spanky's Monkey

iTrader: (6)

cams are never a waste of money if utilized properly. if you don't drag race a lot or spend a lot of time with the engine spinning near redline (road racing) then cams making power past 7700rpm is not in your best interest.

gbkglenn

ok so maybe i should not have got then ? i was told that they would help me mild range i may just have to put on a NBS

ECaulk

iTrader: (6)

it depends on the cam grind and how aggressive they are. But since he's blown, they should help again depends on the grind where the power range is. Some have said it affects the drivability of the car, but i cant say anything for that since i still have my stock cams on a mostly stock cobalt.

gbkglenn

ok thanks for the input like i say i'm new to this its not like the old days, well when i get then in i'll let you no how they do, zoom from zzp seen to be a up right guy

ECaulk

iTrader: (6)

what grind of cams did you buy? (i'm looking at putting a blower in my 2.2 spanky's monkey i know you're going to say turbo) and might do cams as well

Spanky's Monkey

iTrader: (6)

i'm gonna say do as you please. i love the sc whine but in my heart i was always a turbo guy and that's why i went turbo. plus i love to hear the bov.

the op went with the stg2 cams and an aggressive power shift toward mild range and more power in the upper rpm.

ECaulk

iTrader: (6)

I will give ya that the bov does sound sweet. I've just realized in bringing up the should I go sc or tc everyone that has a tc says tc and those that have sc say sc. Both have pluses and minuses.

And that stage cam should be helpful don't know the flow characteristics of them, but when you find the power ppl like to hit those ranges

Spanky's Monkey

iTrader: (6)

they are a good cam. but when you're making power up to 8000rpm, it makes no sense to set your shift points and rev limit lower then the point where you are still making power. but it makes even less sense to spin the engine faster with certain restrictions still in place.

sc and tc debates are always biased. personally i want a dd sc'd civic so i can gut my cobalt, drop in a roll cage and go all out on the suspension.