[derek32303]

Can you change valve springs out with heads on truck still. or do i need to take off the heads to make it easier??? I am doing my first cam,intake,carb,valve springs swap tonight. And the one weekend it is going to be like 23 tongiht and a high of 42 or something tommorrow. all month it has been nice out but now it has to be cold.

[TechnTool]

Remove rocker arms, pressurize cylinder with compressed air, swap valve springs, decompress cylinder, reinstall rocker arms. Done

[derek32303]

i don't have a air compresser. brother in law has a tool to do it

[MI2600]

I've heard of guys reportedly cranking the piston to the top and stuffing the chamber with rope or something to keep the valves from dropping down. I don't know if it works or not.

Failing that, without a compressor, I'd say pull the heads.

[Vortech 4.3]

Originally Posted by MI2600

I've heard of guys reportedly cranking the piston to the top and stuffing the chamber with rope or something to keep the valves from dropping down. I don't know if it works or not.

Failing that, without a compressor, I'd say pull the heads.

YES, that works VERY well. i use a spark plug wire. just don't push it in all the way. and put the rope/plug wire in before going to tdc. with air, it is possible to drop the valve. its not possible with rope/wire.

[derek32303]

well i tried to get them off with head pulled with the tool didn't work at all. rented a tool from autozone still didn't work so i had a my friend use some tool from oriellys machine shop and took 5 min to change springs.