Ls6 heads

**98maro** · 03-20-2010, 03:39 PM

Hello,
I have a question, some guy is selling ls6 heads for $200
I'm thinkin bout gettin them for my ls1. The question is. Is it really worth it?
Or should I just get some aftermarket heads
is it a good deal for $200?
If I get em I'm thinkin bout do the port to them
bt I jst need to knw wat you guys think
and how many horses will that add.
thanks

**importhater81** · 03-20-2010, 04:14 PM

Anything wrong with them? For $200 bucks that's a hell of a deal.Sounds almost to good to be true.

**98maro** · 03-20-2010, 04:23 PM

Nothin wrong with them. He bought some aftermarket heads
I guess better than ls6. Cuz I knw ls6 are good heads
I'm thinkin bout gettin them.
Will that be a good idea?

**importhater81** · 03-20-2010, 04:38 PM

For that price,yes it's a good idea! As long as you're sure they aren't cracked, warped or anything else that would require big$$ to fix

**midi_2001** · 03-20-2010, 04:43 PM

Dude, I bought a set of 243's with <3k on them. Great set of heads but yes...they can be better. I did the work myself and trust me...don't get too crazy with it or you'll scrap out a great set of heads.

I did a bowl blend & polish on the exhaust side, mild polish on the intake side, 30º backcut on all valves, polish on the exhaust valves and lapped all valves.

These heads rock...

**midi_2001** · 03-20-2010, 04:44 PM

Oh yeah...paid $150 for them.

**blackSS01** · 03-20-2010, 04:44 PM

If nothing is wrong with them (ie cracked, warped, etc) and they come with complete valves/springs.........BUY THEM ASAP!!

**98maro** · 03-20-2010, 04:45 PM

He say they are in good condition never overheated or anything like that
car has like 26k miles on it
I knw some dude at a machine shop he's gonna check em for me and make the holes bigger
bt I jst wanted to make sure if it would help my car addin some hp.

**98maro** · 03-20-2010, 04:58 PM

You did all polish your self? Damn Dat was a great deal
I have no idea bout doin that lol
and did you feel a diference?hp?

Yeah nothing wrong with em.
So I'll buy them then
thanks for da help.

**midi_2001** · 03-20-2010, 05:00 PM

http://www.ls1.com/forums/showthread.php?t=107554

**midi_2001** · 03-20-2010, 05:03 PM

Sorry..I lied...double that...it was $350.

http://www.mifbody.com/vbulletin/sho...y-What-I-Found

**midi_2001** · 03-20-2010, 05:33 PM

I know I'm babbling a bit here BUT:

I'm a machinist by trade. Certain things just make sense to me. When it comes to the heads, smooth flow is very important. You can take a set of 243's and make them flow better in a very short period of time (best performance takes several hours).

Think about water flowing through them. Think smooth flow. Without getting too crazy, what would make water flow most smoothly without turbulance?

Don't just attack it without thought; without a well thought game plan. Additionally, each and every port should flow the same (or very close to it).

**garygnu65** · 03-20-2010, 05:45 PM

you will gain at lease 20 hp.if the valve guilds aren't too lose ,new seals,valve job ,and good springs.now you need a better cam,fun stuff.

**98maro** · 03-20-2010, 05:56 PM

That still a good price. I seen em for 400 or 450

so jst do polish and port but not goin to deep on them or something?
Would you recomend me to do it my self or go to the machine shop?

Those look good. Was that when u bought em?

**98maro** · 03-20-2010, 05:58 PM

I was thinkin bout néw valves, springs , and any other parts needed on the heads. But any idea bout what's a good stuff w/o spendin to much?

**c5z28** · 03-20-2010, 06:43 PM

Just leave it at porting, you want turbulence to help mix the fuel and air. Depending on the year vette they came off of they are sodium filled valves which are lighter. You decide on a cam yet? Oh and if you haven't bought them yet i'll take them

**shady milkman** · 03-20-2010, 06:45 PM

Originally Posted by 98maro

I was thinkin bout néw valves, springs , and any other parts needed on the heads. But any idea bout what's a good stuff w/o spendin to much?

slow down...ls6 243s have awesome valves already...the best way to find this out..is look at the springs ..if these heads are stock and from a ls6..the springs will be yellow.

personally i would get them ported by a professional. also i would wait on springs and etc..just get them ported...pick out a cam. Then match them to the proper springs etc.

dont install the heads without the cam if you plan on doing a cam swap in the future.

**midi_2001** · 03-20-2010, 07:15 PM

That was the condition of the heads when I bought them.

Do I recommend you doing your own work on the heads? "Hell no." I don't know you, therefore I don't know your abilities. (My disclaimer.)

Springs are Dependant on cam selection. The cam I went with exceeded the limitations of the stock 243 springs. (FWIW, I have PSI LS1511ML springs.)

There's a lot of info out there regarding head work. Do your homework prior to molestation.

**98maro** · 03-20-2010, 07:17 PM

So jst leave the stock springs and valves?
They are yellow.

I do want to get the cam but I dnt nothing bout them. What could be a good one?
Ls6 cam?

Haha na I talked to the guy already.
I'm gettin them on Monday

**98maro** · 03-20-2010, 07:21 PM

I'm gonna take em to the place to make sure they are ok. For that he charge me $170
for the portidk yet. But he said he could put them on for me
of course for extra$$
I wish I could do all that work my self
to learn a little more