I just ordered my 224/224 cam with 561 lift and manley springs. Do i need pushrods or are the stock ones on the 5.3 fine?

 

i would get the hardened pushrods 7.400 from comp cam, its extra insurance.

 

off topic but is it highly suggested to go to these 7.400" pushrods when you swap cams to an aftermarket one

 

yup. I have a friend that has a WS6 and he bent the **** out of 2 stockers. Im doing it...jump on the bandwagon.

 

I believe the 7.400 is stock size but just hardened pushrods...

 

I went with 7.425 with the TR224 cam in a 4.8L, and it runs perfect!!!

 

Ahh, thanks. I hear a small amount of valvetrain ticking when idling down from around 2,000 but none other than that. So is the .025 increase suggested, or willit lead to valve float in the higher rpm range.

 

Thanks, I just ordered a new set of comp cams chromoley 7.4 rods.

 

you could go with the 7.4 length and i might get rid of some of the ticking, just make sure you get the hardend set....if you dont there is a chance that you will be bending them and that wouldnt be a fun project......

 

What about using a pushrod length checker?

something like
http://store.summitracing.com/partde...5&autoview=sku

I dunno...im just a dork with a computer