prjctSILVERKNIGHTy2k

ok. i have an 00 trans am. I have my cam and springs and just wanted to make sure im not gonna need anything else other than the obvious stuff needed for the swap. heres the specs on the stuff

cam: .580/.590
288/294
236/242 @ 050
114 lsa


springs: 1.290"/.885" OD
1.055/.650" ID
130 lbs @ 1.800" -valve closed, spring instralled height
320 lbs @ .600" lift (1.200")
345 @ .640" lift (1.160")
max lift- .640"
rate- 313 lbs
average coil bind @ 1.090"
higher pressures than comp 26915 springs

Armageddon

iTrader: (41)

Did you get new keepers? Make sure you get all the gaskets and a new crank pulley bolt.

Armageddon

iTrader: (41)

Also, figure out in advance how you're going to keep the lifters from falling in if you don't plan on taking the heads off.

prjctSILVERKNIGHTy2k

my springs came with retainers and locks.
I'm getting the new crank bolt (m16 x 2.0 pitch x 120mm long)
and im using the retractable magnet method for the lifters.
I know my cam is decently big. Am i gonna need to do anything with the lifters or the pushrods or anything?

prjctSILVERKNIGHTy2k

anyone?

disc0monkey

iTrader: (10)

pushrod length checker, this will make or break you

prjctSILVERKNIGHTy2k

how do i figure out what length i should be using?

kj598bbc

With the before mentioned pushrod length checker. GL with the cam swap.

Sid447

You'll need,

stronger pushrods if you still have stock items.

Pasted from a Tech site for your help:

Checking Pushrod length.

1] Using the EO/IC method, get the lifter to the base circle of the cam.
2] Using a known length pushrod (7.400" is a good start with stock rockers) run the rocker arm bolt down to zero lash. This is easily done with your fingers "wiggling" the rocker, the point at which the "slack" is just gone is zero lash.
3] Set your torque wrench to 22 lb./ft. Tighten the rocker to full torque and count the number of turns it takes to get there. 1 full turn with a stock 8mm X 1.25 bolt is ~.047" preload as measured at the pushrod/rocker interface.
4. I normally shoot for 1 1/4 to 1 3/4 turns with stock type lifters like Comp 850's, LS1, LS7 etc.

For an example, if you use a 7.400" pushrod and come up with 3/4 of a turn, you will need at least .025" longer pushrod to get into range. If you end up with 2 1/4 turns, you will need one .025" shorter...
If you are not familiar with the EO/IC method for determining valve events in a 4 stroke engine, its very simple:
For a given cylinder as the Exhaust valve is Opening, the intake lifter will be on the base circle of the cam and lash/preload should be checked for that intake valve.
For a given cylinder as the Intake valve is Closing, the exhaust lifter will be on the base circle of the cam and lash/preload should be checked for that exhaust valve.

00MaroonZ28

iTrader: (3)

IMO I would try to change the lifters and trays, but you don't absolutely need to. Just more for precaution. It will require pulling the heads off though.

vettenuts

iTrader: (4)

Timing chain

Tool for pulley installation (don't follow LS1howto for removal or installation or you might damage the crank threads)

Oil Pump? (Optional)

Coolant

Oil Change

Adjustable pushrod to measure for correct length

Pushrods

Are you sure you want to use the magnets, a few guys have had them dislodge and stick to the lifters?

What tool are you using for the valve spring swap? Don't use the type with the **** on the top.