camarozz383

iTrader: (3)

Hey guys, can some one answer some questions form me, I have a 5.3 with the displacement on demand, I want to put a new comp cam in it, do i have to change the lifters, lifter valley and push rods? iwas reading that i should go with ls7 lifters? thanks

Prorac1

iTrader: (4)

Most people are using the stock LS7 lifters. Most newer LS series motors came from the factory with them. And from what I understand you use a non DOD valley cover, regular lifters and the correct length push rods for your new cam. Hope this helps, Eric L

camarozz383

iTrader: (3)

as far as i know the lifters are different? they got an external spring, so i need to make sure that its right, and I have no idea about the valley tray.

Prorac1

iTrader: (4)

Yes, sorry I wasnt clear. The lifters ARE differant. LS7 lifters are stock replacement now, but not in DOD motors. Sorry for the confusion. You will also need a regular valley cover. Aftermarket push rods would be my recomendation for an aftermarket cam with higher spring pressures. Hope this helps, Eric L

Prorac1

iTrader: (4)

So you should use LS7 lifters in that motor for a regular cam. Thats what im saying. Lol, sorry. Guess im having an off day, lol. Eric L

S-10 money pit

Yes change the lifters,I used LS7 lifters,LS2 valley cover on my LH6,The pushrods are the same as non DOD engines.The thread doesnt say if this is a engine swap,What is the 5.3 going in?If you have to change the oil pan,you will also have to use a non DOD oil pump.Depends on what your plans are,but i have experenced what your doing.I got my information here,but was LS2 forums where i got part#s-search dod delete,Your engine is based on a LS2 rather than LS1,Our blocks have oil passages in the valley,and thats why the LS2 valley cover has to be used,the cover has block offs for them,Like you will learn.most tap them and plug them,I didnt just used the cover(o-rings)

camarozz383

iTrader: (3)

here is the one thats on mine, I would like to just have a nice flat peice of aluminum to put there? this engine is going in my 89 camaro, i notched the k-member, cut the base pan 2", Im also going with a filter relocation kit to make up for the oil i will be loosing from the base pan, i hate that valley cover! and its heavy! thanks for the info guys, keep it coming,here are some pics of the valley cover

S-10 money pit

This is what it takes to do it right,Again parts list is on LS2 forums(search dod delete)

S-10 money pit

Is your engine 24x or 58x??If its 58x you will have to get a LS7 cam sprocket to use a 3 hole cam,and get rid of the prone for breaking timeing chain dampner,by useing a LS2 dampner,As for the lifters being different,so are the lifter holders

S-10 money pit

http://www.ls2.com/usa/printthread.p...hreadid=659175