boostedpower

Okay guys, so i have my motor on the engine stand, oil pan is off, the valve springs are off, now just the valve valve seat/seal, and the bottom retainer, I have a leak down test, could i use this to fill the chambers one by one, so i can change these springs seats, seals, and bottom retainer? also i ordered the part number: 12555884 - GM Z-28/LT1 High Volume Oil Pump - Use with .620' diameter, but the driveshaft to the drive gear is like really little compared to the old one and it has no pick up tube, can i use the old one?

gregrob

iTrader: (8)

On the valve question, yes you can fill the cyl with air and use it to hold up the valves.

That or put the piston for the cylinder you're working on at TDC...

shbox

That pump has a 5/8 (.625) inlet (early LT1s came with 5/8 inlet pumps, but they switched to 3/4 inlet around 1995). I don't believe that is an HV pump (which you don't want/need). Not sure what the difference in driveshaft is you are referring to (there should be none). I don't ever reuse a screen, but I guess you could if it was cleaned up and welded on.

I would use a pump like the Melling 10554 instead (3/4 inlet).

boostedpower

Okay so I've done 3 valves now, no issues, pull the seal up take the bottom retainer off and push the seal back on, now that I pulled the seals off with pliers, i can pull them off by hand, and these bottom retainers look the exact same! size and everything, could i just leave the old retainers and seals on and just replace the top retainer, and locks? this would make my life so much easier!

shbox

Always better to replace the seals when you have the chance, IMHO. You have the motor on a stand. You can't get any easier than that.

boostedpower

due to timing, and not having any, I kind of need to get this done and out of my garage by next week, so I was wondering if I could just use whats already there?, replacing the seals later will only take an hour or two so can i just use the old seats and seals? literally at this point i am running out of rides to work and school, and my bank account is on E...

shbox

I changed my springs and seals with the engine in the car and it only took me a couple of hours. I don't see what the time problem is. Once the spring is off, it takes about a minute to change a seal.

boostedpower

But I don't have replacements, It will take up to 2 weeks to get the seals here, and by that time I will be out a job, out of school, and out of money!

boostedpower

did you make these detailed posts by the way? ---> http://shbox.com/ci/valve_spring_swap.html ..... I have used this thread many times

boostedpower

would a chevy dealership have them? and how much would they cost there?

wllbndthrw

iTrader: (8)

seals are $20 at autozone

shbox

shbox.com is my website. You can get valve seals just about anywhere.

RamAir95TA

iTrader: (2)

Every part store known to man should have valve seals dude.

boostedpower

Got them today, thanks guys!