gapimpin

I was looking at getting a new set of heads when tax returns come in.
i was thinking about the patriots because they had such a good name with the lsx crowd but the intake flow numbers are almost the exact same as vortecs. the exhaust flow is about 40cfm more at .500 but would better exhaust flow alone make them worth 400bux more than the vortecs?

what heads would you guys recomend ? specs in sig.

also anyone have any dyno numbers with patriots on a 350?

gapimpin

no one knows anything about these?

Pat Hall

iTrader: (31)

Here's a huge thread on the Patriot heads. Should tell you everything you need to know. https://www.thirdgen.org/forums/afte...iot-heads.html I read through that thread a while back, and the final conclusion seemed to be that they're pretty much comparable to the Vortecs flow wise. Probably the biggest benefit of the Patriots over the Vortecs is that they're aluminum instead of cast iron, so they're lighter of course, and if you want to run over 10:1 compression, aluminum is better for higher compression ratios.

gapimpin

yea i noticed the intake was about the same i was hoping to get some actual dyno numbers from someone with them on a 350 to see if it was even worth it. I put them on desktop dyno and came up with 436fwhp @ 5500 and 451ftlb @ 4500. prolly not quite that high but i put in 3 of my friends engines that had dyno graphs and it was damn close when i accounted for drivetrain loss.

a stock set of vortecs on the same engine setup shows 424fwhp @ 5500 and 443ftlb @ 4500.

so its not a huge jump in power but hey its aluminum heads fully loaded for 800bux... plus i need angle plug cause i was a retard and ordered the hedman longtubes... that was a fun install i cant get my sparkplugs out now but i swear when i ordered them on summit it said not for angle plug... now it says for angle plug only.

customblackbird

iTrader: (15)

i purchased partiots 195cc aluminum heads with all the upgrades and i couldnt beat the price and the quality, the heads look great.

as far as the vortechs vs the freedom series... i read an article where CHP did a comparison and they basically made the same power.... only advantages would be iron vs aluminum etc... but vortecs make the most power at low lift so if u where to run a larger cam with close to .6 lift the freedom series would make a good bit more power cuz they flow more.

i got mine fully asslembeled and shipped for 860$ and i had 2.02/1.6 stainless valves, vitton seals and a 5 angle valve job, partly CNC ported 64cc chambers, 3/8 screw in studs, guidplates, and a roller spring upgrade good up to .670 lift. beat that!
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also how u get the albility to run vortec or chevy style intakes and perimeter or centerbolt valve covers. thats a universal head

gapimpin

ehh im not running a huge cam but with the patriots im gonna run 1.6rockers should be in the 540 lift range. will the beehive springs fit on these heads? i put them on my 305 vortecs and they only have 5k on them so i dont really wanna throw them out since it was $300 upgrade.

cc 82Z-28

iTrader: (7)

I'm getting the Patriot 215 Super Street heads with only the valves and putting Comp Cams Beehive springs on them. Great deal since they are already cnc ported with 2.08"/1.60" valves.

customblackbird

iTrader: (15)

ud have to ask patriot that. i would think so if there machined for the diameter of the springs u will be using. and since u have the retainers and locks u should be ok, just give them a call to be sure.

cc 82z-28... i was gona get the 2.08/1.6 valves as well as the only other upgrade i could get on them, but i felt like i didnt need it, i think it was an extra 60$ or so too. but those heads flow good dont they? i didnt notice but ive had the heads for 4 months and i just looked inside the intake runners/exhaust ports and they ported them out!! i love them. intake was hand ported about half the runner by the valve and exaust was done about a inch up from the valve.... sneaky bastdar!s

cc 82Z-28

iTrader: (7)

Yea, they are ported and flow like crazy for the money. I figured for the way they make LS1 heads flow and now they are into the GEN 1 heads, they ought to hve a good head. Their price for the assembled heads are 1295.00 but I talked to their rep to see what they would do for me without the valves and hardware since I had the Beehive springs and hardware. I told them what I had and what I was putting together and they will even drill the holes for my 400. Now that's what I call service.

gapimpin

yea im not looking to spend serious money on a set of heads just yet so im gonna go with the $800 freedom series... ill throw down 1500 for some afr when i build my stroker then this motor is going into the chevelle. with a shim head gasket on these i should get close to a .035 quench and around 11:1 compression so it should be a nice little street motor.

gapimpin

someone pmd me and said the heads arent all that great and the extra 40cfm on the exhaust was at 30" pressure drop... i plugged the new flow drop into dd and lost a lot of power but decided not to write patriot off... i called gunner at patriot and he assures me that there flow numbers are at 28" water not 30. he also said they flow about the same as vortecs under .300 lift but anything over that and they eat the vortecs lunch. just some info incase any of yall got discouraged by that info.

cc 82Z-28

iTrader: (7)

I'm still getting them, right now my choice is the 215 but I may scale bacle back to the 195cc heads since this will be 99% street driven vehicle and the smaller 195's would be better for low end torque. The price is the same, just not sure what to do, I'm running a cam in the .528/.539" lift range with 1.5 rockers with a .230/.234 @.050" duration. My gut says 195cc, what do you guys think?

customblackbird

iTrader: (15)

it really depends, if its a 350 id go wit the 195cc unless its gona rev to 7000+. the cam ur running is alot like mine, 230/236 duration at .050 and .567/.570 lift with 1.6rr. when a cam has more duration it likes to rev and makes more power uptop and loses driveability and low end grunt. our cams arent too aggressive but ours will make power in the 2000-6000 rpm range. so i would choose a head for that power range with ur motor combo/intake combo. on my 383 with the HSR the 195ccs will and cam will pull to about 5500-6000.

gapimpin... the vortecs are good heads but they are going up in price. and all the machining work needed for a cam with lift higher than .470, they need machining for larger springs and screw in studs. vortecs suck after .4-.5 lift they max out and porting does no good, they flow best out of the box. the freedoms will make more power bc they flow more where the vortecs drop off. i would get the freedoms bc of there price like 150$ more than vortecs. and if u port them alil ull get more outa them. just match it with a cam that has the right lift for max flow of the heads.

gapimpin

guess im gonna end up getting the patriots... if anyone has some dyno numbers with them i would love to see them. heads + suspension and the performance aspect of my car is gonna be all done. then i gotta do paint and interior still but thats the easy stuff.