SBC roller vs non timing chain cover?

[Stomis]

My buddy and me are gearing up to build his s10 when my truck is rolling. Hes got a factory roller 350 for it, currently no cam in it and hes been asking me about what he actually needs for a cover in regards to cam buttons and thrust plates etc. I told him I really had no idea with factory stuff because I had thought the thrust plate design was a retrofit thing.

Could someone shorthand school me?

 

[sweetk30]

factory roller blocks have bolt on cam holder plate and make sure timming chain set is made for the roller block using roller cam .

good little cheep stock cam is lt1 350 cam from the Camaro / firebird guys that swap them out a lot.

lifter valley just need the lifts and tie plates and the big hold down spider and all good.

I converted a 350 flat tappet to roller this way .

 

[Stomis]

factory roller blocks have bolt on cam holder plate and make sure timming chain set is made for the roller block using roller cam .

good little cheep stock cam is lt1 350 cam from the Camaro / firebird guys that swap them out a lot.

lifter valley just need the lifts and tie plates and the big hold down spider and all good.

I converted a 350 flat tappet to roller this way .

OK I thought so but didnt get a chance to look at the block yet. So its got a retainer just like an LS1 and the button/thrust plate is retrofit only.

 

[sweetk30]

ya stocker is bolt on plate to block to hold cam in .

 

[n4xplay]

I would still make Shure to check your cam movement with the timing cover on before dropping the lifters in. I did a retrofit so I am not familure with the roller SBC but I do know that roller cams do have to potential to walk for and aft and that affects timing. I used a pry bare threw the lifter hole placed on the side of the cam lobe to ease the cam back and forth and my dial caliper positioned against the timing chain and dimple on the block I made with a light center punch to check my cam movement. probably not the best way but it worked. had to get the wife to help I just didn't have enough hands.

 

[Bowtie85]

Old style timing cover works fine, on my vortec block I had to drill/tap a couple holes that weren't put in as well.

 

[Stomis]

I would still make Shure to check your cam movement with the timing cover on before dropping the lifters in. I did a retrofit so I am not familure with the roller SBC but I do know that roller cams do have to potential to walk for and aft and that affects timing. I used a pry bare threw the lifter hole placed on the side of the cam lobe to ease the cam back and forth and my dial caliper positioned against the timing chain and dimple on the block I made with a light center punch to check my cam movement. probably not the best way but it worked. had to get the wife to help I just didn't have enough hands.

If the cam plate is like an LS1 like they are saying its not possible for the came to walk. This is the reason I asked. Because retrofit and OEM are two different animals.

 

[n4xplay]

Stomis I understand that the blocks are different...all I was tiring to get across is that it should still be a measurement to check if possible.

 

[Stomis]

Stomis I understand that the blocks are different...all I was tiring to get across is that it should still be a measurement to check if possible.

I got ya. Im only saying that if the retainer is the same I dont think its possibly for it to walk because its bolted to a thrust bearing. Its still worth double checking.

 

[Bowtie85]

Should be all good with the right parts, never checked mine upon assembly for end play.


Looks like yeah got Er figured