HD Head Studs

[bah1491]

If I go with a 13.5:1, do i need to repalce with heavy duty head studs? Also how about the 12:1?

[Ginxd00]

I would, I would also not run a stock rod with that compression.

[underpowered]

a must with 13.5:1, and 12:1 is really pushing it on the stock one. also, Ginxd00 said i would get a new rod atleast with the 13.5:1.

[bah1491]

im still undecided, i cant find a freaking 416 thats 12:1 anywhere on ebay....its all 440 kits....i dont really believe in having to have the largest amount of CC's, i think you can work most of it out with gearing and tire size....i might end up going with an 11:1, they seem to be cheaper, and more avaiable, what about studs on those?

[400eXr1d3rZ]

Originally posted by bah1491
im still undecided, i cant find a freaking 416 thats 12:1 anywhere on ebay....its all 440 kits....i dont really believe in having to have the largest amount of CC's, i think you can work most of it out with gearing and tire size....i might end up going with an 11:1, they seem to be cheaper, and more avaiable, what about studs on those?

The size of the bore doesn't really make a difference :ermm:

[Ginxd00]

I think you will be ok with stock studs on 11.1 CR.

[bah1491]

i know the bore size doesnt matter, but they come in kits with the correct rings, and some with correct sleeve....i dont want to hassle with exchanging parts

[ohsobad_chevy]

My 2 pennies:

If you are bumping comression at all, go ahead and get a new rod, HD studs and make sure to run efficient octane ratings........look at it this way, you can bump your compression to 13.5 and not buy a new rod or HD head studs (which will be easier to do now because you are allready inside the engine) or you can have a hassle with blowing head gaskets or even worse.....breaking a rod, which will be very costly, so if your going to do it, you might as well save you some time and money from the git go.

*Steps off the soap box* :p

:cool:

[bah1491]

I think im going to go with an 11:1 ratio wiseco 416 kit....I dont feel like splitting the case, and the crank to replace the rod....Although, in the future, i'll probably end up doing it sometime or another....

[02silverpile]

Im running a 426 kit with 11:1 AND i RUN 50/50 GAS. However, I blew a head gasket last summer. I haven't decided if it was due to warping of the head, of If I really need to add the HD head studs. I dunno. either way you need to disassemble at least the top end.

[bah1491]

alrighty, that helps a lot too....im going to get the studs, new valves, new valve springs and retainers....anyone know what brand valves and springs to use? i dont know of any