im going to swap a milder cam and springs into my motor comp cams says i should use #863-16 i have crane cams #11553-16 whats the diff in these lifters i know the complifters are retro fit and that part is not important they are both the same type of lifter i just dont understand are there milder lifters to go with milder cams are they all basicly the same

 

Are listed as regular flat tappet lifters
http://www.summitracing.com/parts/CCA-863-16/

Unless you put the wrong numbers up I am seeing the Comp lifters as flat tappet and the Crane as roller lifters.
Completely different types that don't interchange.

Not withstanding that the 11553-16 are listed as mech roller lifters which go on a different type of cam to a hyd roller cam

What cam are you going to install ?

 

sorry wrong part # com#853-16 the cam i have is comp#12-415-8 springs comp#986-16p thanks

 

The 853 lifters are retro fit for hyd roller cam ( right type for the cam you list )
but the Crane ones you say you have are for a solid roller cam.
Is that correct Crane part # ?

Do they look like this?
http://www.oreillyauto.com/site/c/de...325P&ppt=C0146

What cam ( solid or hyd roller ) do you have them on at present?

 

yes the crane # is correct i got them in a pkg deal with a big *** hyd rooler cam and some heads with springs i gave comp my engine specs and they suggested those parts just wanted to know if i could save a few hundred bucks by using those lifters
THANKS FOR ALL YOUR TIME AND HELP