guide plates-push rods.????

[409hotrod49merc]

Hey guys,
Not to far from ordering push rods for my 340 h.p. 409 build... What about the oem 5/16" push rods at s.c's ?? or step up.... will be using 817 heads w/screw in studs.. and what about guide plates ???
Thanks, Steve

 

[models916]

I use Manley 5/16 at a custom length. I don't think stock are going to hold up to added spring pressure and they are not hardened for guide plates.

 

[409hotrod49merc]

I use Manley 5/16 at a custom length. I don't think stock are going to hold up to added spring pressure and they are not hardened for guide plates.

Thank You, It's little bits of iformation like this that helps us new w motor guys, out !!!

 

[64ss409]

I am using the Isky 3105-D springs with stock pushrods, no guide plates, since 2004. No problems, but rarely ever go over 5000 rpm. Mostly stock build except for a little more cam.