Thread: Opinion on Patriot Heads

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Ok experts like Pat, ERIK and all the other motor masters on here...regardless of your opinion regarding that these headsa are cast in New Zealand and manufactured and machined here in the US....I have a shot to get a set brand new close to nothing. Someone owes me a huge favor.

So these Patriot Perfomance heads are Aluminum, 2.30 intake/ 1.88 exh; 320 runners and 119cc combustion chambers.

Motor Im gathering parts for is a 454 .030 over. Stock crank. Truck Rods with ARP Hardware. TRW Forged L2349 .030 over pistons. Cam I wont choose till I get heads. alos have not chose intake and Carb but will most likely be high rise dual plane aluminum and 750-850 cfm carb.

Car is a 66 Chevelle with TH400 trans and rear gears at 3.73. Would like to keep stall at 2800-3200 range. Car is not daily driver and just for fun; 905 street with a handful of track trips a year for fun.

Cam I am open to Hydraulic roller and solid flat tappet but not solid roller due to occasional stop and go traffic here in florida and its primarily street use.

Ive done as much research as I could find and the most convincing arguement I have is 2 examples: One is CHP magazine did a 505 build with these and the heads produced impressive #s but thats 50 more cubic inches and a solid roller cam. The results did show high torque #'s down low suggesting the velocity of the heads to be good correct?

The best example I have is GMs 454 HO uses 325cc rectangle port heads and with weenie hydraulic roller cam produces 500 ft lb and 425 hp, with max torque figure down low in the RPm range. Im thinking with this info I cant go wrong with these heads?

Opinions please?

Thanks in advance for any replies.

The price seems to be ok. I think they should be ok.

Opinion on Patriot Heads

On a platter after sunday! Sorry you left that one wide open!!

big head heavy car not much gear .not the best pick O port for a driver/track i would lean to a smaller runner but for a bigger engine i would use them

Oh yeah forgot to mention with 119cc chamber head I will be at approx 10:1.

Originally Posted by pat mccarthy

big head heavy car not much gear .not the best pick O port for a driver/track i would lean to a smaller runner but for a bigger engine i would use them

I agree Pat but here is where Im at. A set of 781 or 049 ovals reworked are gonna cost $900-1000 for all new parts and mild port work, larger vavles installed and all parts. A set of brodix RR ovals are about 2K and add another $250 if you want the CNC option. The Edelbrocks and GMPP aluminum heads are semi open chambers and I dont think they will work with the 2349 pistons, and are about $1800. So lets say I have a budget of $1500 for heads, are you suggesting a 20+ year old set of ovals reworked will be more efficient and more effective than these Patriot Aluminum heads for about the same price?

Originally Posted by 30-A Rider

I agree Pat but here is where Im at. A set of 781 or 049 ovals reworked are gonna cost $900-1000 for all new parts and mild port work, larger vavles installed and all parts. A set of brodix RR ovals are about 2K and add another $250 if you want the CNC option. The Edelbrocks and GMPP aluminum heads are semi open chambers and I dont think they will work with the 2349 pistons, and are about $1800. So lets say I have a budget of $1500 for heads, are you suggesting a 20+ year old set of ovals reworked will be more efficient and more effective than these Patriot Aluminum heads for about the same price?

did not say old iron heads i said your 325 is a bit big for a low rpm engine that will see stop and go lower rpm in a heavy car your limit for cam gear and stall plus cid they would not be my first pick but do what you want

Originally Posted by 30-A Rider

Ok experts like Pat, ERIK and all the other motor masters on here...regardless of your opinion regarding that these headsa are cast in New Zealand and manufactured and machined here in the US....I have a shot to get a set brand new close to nothing. Someone owes me a huge favor.

So these Patriot Perfomance heads are Aluminum, 2.30 intake/ 1.88 exh; 320 runners and 119cc combustion chambers.

Motor Im gathering parts for is a 454 .030 over. Stock crank. Truck Rods with ARP Hardware. TRW Forged L2349 .030 over pistons. Cam I wont choose till I get heads. alos have not chose intake and Carb but will most likely be high rise dual plane aluminum and 750-850 cfm carb.

Car is a 66 Chevelle with TH400 trans and rear gears at 3.73. Would like to keep stall at 2800-3200 range. Car is not daily driver and just for fun; 905 street with a handful of track trips a year for fun.

Cam I am open to Hydraulic roller and solid flat tappet but not solid roller due to occasional stop and go traffic here in florida and its primarily street use.

Ive done as much research as I could find and the most convincing arguement I have is 2 examples: One is CHP magazine did a 505 build with these and the heads produced impressive #s but thats 50 more cubic inches and a solid roller cam. The results did show high torque #'s down low suggesting the velocity of the heads to be good correct?

The best example I have is GMs 454 HO uses 325cc rectangle port heads and with weenie hydraulic roller cam produces 500 ft lb and 425 hp, with max torque figure down low in the RPm range. Im thinking with this info I cant go wrong with these heads?

Opinions please?

Thanks in advance for any replies.

I would say for a street 454 they are to large.
If you had a street 496 that would see 6,500 rpm's I would say they are fine.
In a 454 I would not even look at these heads un-less you planning on running it to 7,000 rpms.
I am not so sure about the magazine build-up using these heads.
The numbers seem a little on the high side to me.

Opinion on Patriot Heads

On a platter after sunday! Sorry you left that one wide open!!

Oh, that was a good one!

i have patriot: heads on my 496 bbc ive the biggest voodoo hyd. roller 625 lift 242@050 lift,900 cfm wieand stealth 373 gear,tremec tko 600 1969 vette,i shift at 5500 rpm...its a powerhouse! not too big i love it,you can feel that frame twisting so to speak under acceleration! i love it 10:25 cr

Originally Posted by buccaneer1961

i have patriot: heads on my 496 bbc ive the biggest voodoo hyd. roller 625 lift 242@050 lift,900 cfm wieand stealth 373 gear,tremec tko 600 1969 vette,i shift at 5500 rpm...its a powerhouse! not too big i love it,you can feel that frame twisting so to speak under acceleration! i love it 10:25 cr

boy did some digging to find this old post .that cam is about the same cam under howards and Erson Cam used many of them in my 496 builds

Originally Posted by pat mccarthy

boy did some digging to find this old post

He sure did, Pat. At the least, we can't accuse him of not doing his "search and research".

And, "good on ya'" for that buccaneer1961. Hang around, there are a whole bunch of well experienced craftsmen and top quality builders here - not including myself in that bunch, I'm just an old reprobate who has been banged up on too many times; I can't hold a candle to these guys.

Im with Eric on this. I know nothing is more frustrating than someone telling you to build something different than you intend but that is the rational decision. If you are saving money on the heads, take that money and look at competition products or ebay's 496 rotating assemblies. There some forged piston (18cc) kits that are $1150. You need to move that heavy car and those heads will work well with a 496 and a hyd roller in the high 240's to mid 250's duration. Im not as experienced as some of these guys but i have built a few 454/468 engines.

The original post was Feb. '08.....

Originally Posted by flanker1970

Im with Eric on this. I know nothing is more frustrating than someone telling you to build something different than you intend but that is the rational decision. If you are saving money on the heads, take that money and look at competition products or ebay's 496 rotating assemblies. There some forged piston (18cc) kits that are $1150. You need to move that heavy car and those heads will work well with a 496 and a hyd roller in the high 240's to mid 250's duration. Im not as experienced as some of these guys but i have built a few 454/468 engines.

seeing how we put this back up to the surface when i take about a cam with 640+ lift i am taking about a cam at 245-250 @ 050 and if your not willing to run some stall and gear and some loss of vacuum then this would not be a first cam pick how the car is being driven plays to what cam i use .i am still not sold on china heads ..i would use and have stock gm O ports and a AFR head or RHS or Dart before using any thing from china . i do not know how many bbc i built or machined its alot over 30 years as for buying on E bay parts make sure you know who your buying from. i like to look threw some of thes old post to see if i change my veiw in time .i still will go with what i posted