Calderone

Hi,i bought
CAM , ZZ4,Springs and a Mahle piston+ring kit
Im kinda doubtful a bit cause its my first time spotting this parts
The cam has an orange paint near the distributor gear
and it has stamped :
11506L
and 07IAC

The springs have no green like like i read here but blue.-

and i bought a piston set w/rings but i want to know the specs on it and i can't find a catalog ...

please HELP !

genefree3

The stamped numbers on cam matches a ZZ4 cam I recently installed for a friend. The springs you'll have to install and check spring pressure and height to know if they're correct. and the pistons are 30 over and the rings will have to be checked for end gap. I am at a lost for what your questions/concerns are? Looks to me like if you want a ZZ4 cam and a 30 over bore your there. Did you buy these from a distributor or off line, and if so where did you buy them from. Personally, the paint would mean nothing to me

stifeout

The cam looks right(part #) However I would most definitely be certain on the specs for piston, rings, etc.

Calderone

Yes,im lookin for info about the pistons
i got them from an online dealer
i want to know more about the pistons / rings

Calderone

I Want to know the compression with the 58cc heads

JackDidley

Are they flat tops with 4 eyebrows?

Calderone

yes

JackDidley

Should be around 10.5 to 1 depending on the variables.

Calderone

Yes,that's what i bought for
i think those were ther numbers with the 58cc but i need the specs
where did you get them ?
i might buy another set for another engine but i need the spec sheet to know which heads to use on that engine.-
thanx !!

JackDidley

Try this link, it may help.


http://kb-silvolite.com/calc.php

89onlyZ51

Those don't look like ZZ4 springs to me (were they supposed to be?). ZZ4 springs are single w/o the internal damper.

Calderone

Yes,they were supposed to be ZZ4 Springs
hmmm i wonder which springs are

Calderone

any info ?

rodj

ZZ4 /LT4 have green stripe.
Who is the maker of the pistons?

Calderone

MAHLE ORIGINAL its the maker's name
Damn,i have blue stripe,what does the blue stripe means ?

AGENT 86

This is what ZZ4/LT4 springs look like.

Calderone

thanx agent,i got blue ones
i dont know where my does come from
i need to find out

Calderone

i came up with this data :

599911CWR-030 5999113080308 GENERAL MOTORS 5.7L (350 CID) OHV V8 w/ rings installed (2M139) CLEARANCE: 0.0018" @ 0.709" from bottom of the skirt .030 4.0300" 8

How can i calculate compression ratio with my 58cc heads ?
thanx a lot

rklessdriver

The springs you have appear to be the old style "Z-28" spring. There are several versions made by several companies for limited class race cars. Here is a link to the most popular one made by Pioneer. 110lbs@1.700 and will stand .550lift. The other brands vary a little but are all pretty close.

http://www.jrmotorsports.com/product...uctID/7984.cfm

You need to put your springs on a spring tester and check them against the specs I gave you in the link.

There are is also a stronger version that will stand over .600lift and has about 140lbs@1.850.

Any of these will run the ZZ4 cam fine.

If your springs check like 45-60lbs@1.750 then you have just stock replacement springs and they will need to be returned.

Will

Calderone

thanx a lot rkless !
Yes,i asked my dealer and he told me that those springs will be fine and will handle the zz4 cam excellent.-
i will try to test them on the machine this week soon.-
Thanx a lot
any info on the compression ?