buy unassembled heads and have someone you trust assemble them with good parts. those castings may be pro comps, and contrary to old reports since about 2009 the quality improved dramatically . they are the basis for the Airwolf heads. i agree the 882 heads are also worthwhile with a little work they flow well but you can only get so much compression with them. i have pro comp 190 heads with manley components and my rockers are straight the seats haven't fallen out and i contributed almost zero to californias economy

 

Same as it is now. Smog era heads ('71 and later) are all 76cc nominal chamber volume. L82 882 heads are nothing special. You will see little to no performance gain from them, if boosting power is what you're after.

 

With the dished pistons in the L48, you can go with a small cc combustion chamber, like the 58cc in the aluminum L98 heads off've the 87-91 Corvettes. I had about $1,000 in mine total and that's new heavy duty valve springs, retainers and a three angle valve job, including the purchase price.

These heads use self-aligning rockers, because the guideplates are really just placeholders for the push-rods. They're the only Chevy Heads that use guideplates (L98 specific) AND self-aligning rockers. With a long duration RV style cam, you'll easily get 300 horsepower. I used the Lunati Voodoo 262 RV-Marine-4x4 cam and it pulls hard through all the gears. The cam will run you about $275, complete with lifters.

My 74' has the stock L48 block and pistons, Lunati Cam, L98 Aluminum heads, headers and an older Edelbrock Performer Manifold along with a brand new Holley remanufactured 650 double pumper with mechanical secondaries (you can go vacuum for better mileage) and this car will now squat and lay fifty feet of rubber down on the road. The performance is really good and I'm pleased with the combination.

 

Im looking for 9.0-9.5 cr, im going to be running a set of 0.30 over flat tops with 2 valve releafs. Im headed right now to pick up a 78 z28 350 engine with 103k miles to rebuild how i want so i can stash the numbers matching engine if i ever wish to sell the vette

 

Mmnnnn.. Seems AWFULLY cheap for a pair of complete heads..
Or is it a pair?
The description does not state anywhere if you are getting one or two heads for that price?
If it's for one head, you can do better (I bought a pair of Profiler heads last year for about $800 bare- MADE IN THE USA!).

If it's for a pair, I'd question the components used- My guess is that everything is a knock-off. A decent set of valves and springs for one head will run you $200-$250 alone..

Not sure 200cc is appropriate for a mild 350 either?

 

Wrong, These are some quotes about American made patriots.....

" Guide work that apears to be done with a cordless drill, cnc ports that flow less than a stock vortec, variation in spark plug depth ( some plugs need over .100 worth of index washers to not hang out into the chamber)

Whats not to like.

UrbanHunter

The reason you have not recieved any replys on this is because most of the population on this forum is made up of engine builders like myself who are not willing to risk their reputation to a inferior product whether real or perceived. I have no axe to grind with Patriot but a turd is a turd no matter what country it is laid in. I have not seen any as cast aluminum head outperform the Dart Iron eagle platinum which is a pretty good bargain by the way. But if shiny is more important than speed the Brodix IK series heads are the cheapest that I know of."

" All I can say is don't waste your money. Seem them and they are "junk". Chambers vary +- 5cc's Guide sizes are way to big ect ect........"

In the same thread they have good and bad to say about the pro comp heads.... most of what I read about them is they were really bad when they started out but now the quality has dramatically improved..... chances of getting a bad one are reduced even more when you buy a set that have been machined and set up by a reputable seller like skip white....

http://speedtalk.com/forum/viewtopic...=11205&start=0

 

I considered these for a while and found they aren't as bad as everyone would like to believe....especially those selling a competing product....

Everyone's got something to say about them being from overseas but you rarely see anyone bashing a new crate engine from Mexico? Perhaps we should only suggest dart blocks? Or are those made overseas too?
If someones worried about getting what they paid for they can always pay me the markup of $1,000 and I'll buy the for $600.00 and ship them to that person.... :P

 

Flawless logic, I'm certain.....

Some of us are just trying to give 'fair' assessments on the product he specified. Whether you think some of us have an axe to grind...or not...is irrelevant, AFAIC.

 

I don't see how some people potentially bashing something based on no first hand experience isn't relevant...especially if some of the people are competing with these products...
I'm not singling anyone out since I honestly have no idea who might be biased against these heads or why.... Its just I see this kind of attitude often on forums and regardless of whether the product is or isn't crap its not doing anyone any good just filling every discussion with conjecture and preconceived notions that it must be junk... if you go back to all the older early threads about OBX stainless side pipes you see the same negative attitude putting them down before people even had any experience with them since they "had" to be crap since they were less than half the price of "Quality" headers and pipes even though they both have the same weaknesses except the box being better stainless construction. And back then even more people thought the hookers were American made and that's where the justification for the higher price came in their mind.
I dealt with this when I bought my stainless headers for my dodge truck to replace the plain steel pacesetters that rotted through and cracked.... I did a side by side review with measurements and specs pics you name it...... people could just not believe it.... they insisted all the stainless headers on eBay were the same junk even when I showed them side by side pics showing the manufacturing differences....
Some people just want to believe they couldn't possibly. Have gotten a better deal themselves so they put anything that seems like a better deal than they got down.


I just feel If your going to adamantly praise of bash something you should have some actual experience with what your commenting on to base this.

 

i just bought the OBX side pipes and they were the easiest header install i have ever even herd of plus they have a good flange which is uncommon on a cost effective product. i notice the newer pro comp heads get zero coverage in magazines it is probably because they don't advertise there, and it may be they are better than the big manufacturers would want us to know. i know engine builders who build pro level engines and they buy all the heads they use bare because even brodix dart afr etc get sloppy . people buy what the can afford or what works for them , there is garbage out there and some of it has a domestic label. now ,i think i will go get some chinese food

 

Sounds like a plan!

========================

When you get burned a few times by getting low-quality JUNK instead of a "good deal", one tends to shy away from that contingent of providers from whom that JUNK was procured.

Call that stereo-typing if you want. Actually, IT IS!!! Now, when there is enough evidence that proves to me such providers can be trusted with my safety, and the safety of my passengers, I will "change my tune." And not until....

 

guess what I had for dinner....Kung pou chicken and wonton soup.

I have been burned a few times....just as often from shady American Craigslist sellers....I try to do my homework by coming to forums like these and ask for. Reviews and opinions from those with experience. With the product before buying so you can understand my frustration when a search comes up with so little first hand info..... you know what they say bad news travels twice gas far as good.
I just got burned on a chrome plated power steering pump case that doesn't fit my original pump..... the opening is too small.

 

great minds think alike