http://sites.reachtheworld.tv/waterN...05240&DID=1225

 

Nice find but that's a bit much for performance heads.

 

When you want performance you have to spend the $$$$$$$.

Be happy you don't have to spend 700 dollars for a custom ground cam or 3K for ported heads.

 

Well I've seen performance heads run around $800 on the 2.2 in the past, maybe these are a bit different.. Hell a new set of standard heads are like $600 from the factory

 

what type of gains can u expect from heads?

 

Could probably expect 30-40 horsepower with cams. Probably more.

 

That actually seems reasonable to me, for what they are.

 

Aren't the 2.0,2.2, and 2.4L heads interchangeable?? If so, I will buy stage II heads right now. LOL

 

Seems like a pretty good deal. A Patriot Stage II head package for an LS1 goes for pretty much exactly double that, and those heads appear to be a bit more complicated and larger than an LSx head, so the price seems fair considering those two facts. Not to mention theres twice the ports and twice the valves to massage. Im sure machining on those takes a bit of time. And we all know Time = money

 

the 2.0 and 2.2 heads are NOT the same. they have the same overall dimensions but have differnt holes and attachments and passages. i have the two diff heads in my garage rite noe, i been poking around them for a couple weeks. i think that the 2.0 head will work on the 2.2 but not vice versa. dont quote me on that just going by my observations so far.

 

holes and passages as in the intake and exhaust ports being different? In dimensions or in locations? Where'd u get the 2.0l head?

 

no, the ports appear to be the same overall size, of course the 2.0 ports are a little smoother. im just taking about random holes and passages throughout the heads. i have no idea what most of them do but they are different. got the head from a wrecked ss. im still trying to sell it if ur interested pm me.

 

oooh okay gotcha, definitely interested in the SS head. PM sent.

 

Probably coolant passages.

 

Any drawbacks to upgrading the heads? Or is pretty much a good investment?

 

None that I can think of other than your bank account and/or wallet shrinking a bit

 

Thanks! So better performance, no mechanical drawbacks, sounds good!

 

forgot to add, chevy high performance magazine tested the patriot head and cams on their eco project and gained 25 hp and 30ft/lbs of torque. seems like a good investment to me.

 

NICE. that was definitly a good thing to add. i'm think i'm going to have to set aside 1000 bucks for this.

 

Unfortunately, The heads only work for the 2.2L just got an email from the guys at patriot. They're getting back to me on if they are making heads for 2.0L and 2.4L.

 

25 HP and 30 LBS is definately worth the money if you ask me. Do you have to upgrade anything else in order to run these??

Sorry for the questions, but I have never done internal work, its always been bolt ons.

 

Patriot sells junk - just do a search on ls1tech.com and see for yourself. They can't give them away now

 

Well thats the first time ive ever heard anything like that. Ill head over there and do some research, but I cant believe Patriot is selling junk now.

 

http://www.gmgoodwrench.com/perfpart...284&section=pp

No prices, but these are the GM performance parts on the Phase 5 cobalts. Somewhere on the site is a twin screw supercharger for the 2.4 in the cavs and sunfires.

 

all those parts have been out for years, go here:

http://www.paceparts.com/index.asp?P...tSearch=ecotec

the s/c for the 2.4 u speak of is a tiny little eaton m45 roots blower