01CaMMMaro

iTrader: (25)

I found a pair of 243 heads on Craigslist. The guy says they are milled 30 one thousandths, I'm not too familiar with milling heads, is that a very big difference or just smoothing it basically to get a smooth surface? Will this effect rod length? Also the guy bought them for a project and isn't using them but he's not sure what car they came off of, the springs are silver. Possible to tell based on color of springs?

1nasty86

iTrader: (63)

if they have silver springs they are possibly not the ls6 style 243 with hollow stem intake and sodium filled exhaust valves, depending on your application you should still be fine with them milled .030.. i had a set of 317's milled .040 and didnt have any problems... how much are they? lol if there cheap enough i might steal them from ya

01CaMMMaro

iTrader: (25)

Cheap enough

01CaMMMaro

iTrader: (25)

The guy said he thinks they are from a GTO

1BAD02WS6

iTrader: (-1)

30 thou isn't alot but it's more than a clean up. It really depends on your set up, cam size etc

01CaMMMaro

iTrader: (25)

Stock 2002 LS1 cam

1nasty86

iTrader: (63)

oh yeah your fine with a stock camshaft lol

redbird555

iTrader: (14)

just make sure you get some new pushrods a .030 mill will effect your pushrod length but you should be fine running pretty much any medium sized cam with those heads should you ever choose to do so.

wildcamaro

iTrader: (15)

Yea you will need to switch pushrods at minimum to use those heads...I would also very they are only a 30 mill and not too far to the point the intake won't line up...Craigslist ppl can be shifty just cover all basis

Blk98Vert

iTrader: (2)

As said they should be fine, they just have regular valves. I plan on doing the same thing with my setup.

sepsis

iTrader: (7)

$300 a decent deal for a good used set of 243's?

Blk98Vert

iTrader: (2)

Yep thats around the going rate

01CaMMMaro

iTrader: (25)

$300 is the lowest I've seen. For low mileage, 40k or less, I've been seeing them for around $500. The set I found is $375 and 35k miles.

Rare96LT1Formula

iTrader: (32)

$300 is a great price imo. If it needs any unexpected work, you got them on the cheap.

wildcamaro

iTrader: (15)

Yea $300 good deal i got mine for $320 locally like 6 months ago...i used to sometimes see cheaper but the cat is out of the bag when it comes to LS's now, all you gotta do is drop one in and you are instantly a threat to everyone on the streets!!