Rocker Arms? Manifold?

Does any body make roller rockers or different ratio rocker arms for the 3400? Also are the ported manifolds worth the money and/or has any body tried to port there own manifold or have a local machine shop port it? Thanks for the info new member to site and alero but not to cars in general.

[jackal2000]

last i knew crane made a set of gold race adjustable roller rockers but you need custom guideplates for them to work. 60degreev6.com has a bunch of info on them.

about the ported manifolds...you'd be better off doing the 3500 top end swap and again see 60degreev6.com for more on that.

[alerored04]

/\ 60degree is the best source for info on this kind of stuff, last i read you could install higher ratio rockers on a 3400 but they required a little "clearancing" on the valve covers.

[Gr1m]

well i found someone willing to sell the ported RSM UIM and LIM for pretty cheap..i think im just gonna go with those instead of doing the 3500 UIM swap...what do you think?