rcdynamic88

I would like to upgrade to an adjustable valvetrain set-up on a 1965 330. I've seen other posts on here that say the Comp Cam 1441-KIT has everything you need for an Olds 350-403. Will this kit also work on a 330? It comes with the studs, guide-plates, rocker arms and pushrods. For those of you that have this Comp Cam set up, are all of you using the same length pushrods? Is there a standard length that they include with this kit that will work for every application, or should I use a pushrod length checker to figure it out? Does the 45 degree cam bank angle on this 65 330 figure into the pushrod length equation, or is it a non issue? What other factors do I need to think about with this upgrade?

rogue_ryder

It's Definitely too late to help the OP, but here's what I've discovered with this kit. https://www.compcams.com/rocker-arm-...de-plates.html

Comp cams is selling you a Kit with 8.5" Pushrods. I think Comp cams knows their stuff and that's probably the right pushrod length to give optimal rocker arm geometry for a stock factory Small Block Olds. BUT once you start milling heads, using different head gaskets, decking blocks and using aftermarket cams (smaller or larger base circles) that goes right out the window. When I first uncovered this damage I thought it was Comps fault, but in actuality it was the engine builders fault. I tried the factory 8.230" length in place of the 8.500" at first but those were too short, turns out my combo needed 8.350 to get everything right. I found 15 used CV Products for $30 and leaving me to buy 1 more @ $19 (ouch) but the .080 wall push rods will be far stronger than the high energy pushrod Comp provides in the kit. The Nuts in the kit need to go in the trash as well and be replaced with Poly Locks. Once you do that this kit is fine. Since I didn't buy this kit, I don't know what the price would be buying the plates, studs and rocker arms individually would be vs the Kit price, but normally Comp's Kits are much cheaper than buying the items individually.

I bought an engine with this kit installed but because the heads were milled along with the decks the pushrods were too long. Resulting in damage

oddball

The Comp push rods are noodles and the pinch nuts are a PITA. But it's a cheap way to get started and easy to replace the pushrods and nuts.

v8al

Yikes! You have a multitude of valve train problems in this one picture!