View Poll Results: patriot ls6 stage II vs dart 225ls1
patriot ls6 stage II
66
56.41%
dart 225ls1
51
43.59%
Voters: 117. You may not vote on this poll
patriot ls6 stage II vs dart 225ls1
11-18-2006, 10:40 PM
#2
well, i have an LS6 intake, the Patriots with the 2.055 ferrea intake valves, i have a cam with more duration and a bit more lift then the one you specified and all the supporting bolt ons, through an M6 on my friends mustang dyno i put down 430ish to the tire.
so i think your 450 to the tire is a bit out of reach with the patriots, unless you're using a dynojet/egobooster
i'm not sure how the Darts stack up against the patriots,
so i think your 450 to the tire is a bit out of reach with the patriots, unless you're using a dynojet/egobooster
i'm not sure how the Darts stack up against the patriots,
11-19-2006, 02:28 PM
#4
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The Dart heads will probably have better port velocity than the Patriots. The CNC LS6 heads from GM are 243 cc intake runner heads. I would imagine the Patriot heads are pretty close to the same. I wouldn't use either head myself, I would use a set of ET Performance 225 cc heads. My cousin's vette has made 445 rwhp and 406 rwtq SAE corrected on a dynojet 248C. The tuning is on hiatous due to an electrical problem on the dyno(this was a week after the last dyno pull on the vette). Right now the ECM is about 80% tuned for the combo.
- FAST 90mm intake with ported 90mm LS2 TB
- 302 adv. dur. intk/exh 234 @ .050 112* LSA with 108* int centerline .578" lift
- new timing chain on stock 93,000 mile short block
- Jesel SS series shaft mount rockers 1.7 ratio
- MSD coil's
- 36 lb/hr injectors
- SLP 85 mm MAF
- FAST 90mm intake with ported 90mm LS2 TB
- 302 adv. dur. intk/exh 234 @ .050 112* LSA with 108* int centerline .578" lift
- new timing chain on stock 93,000 mile short block
- Jesel SS series shaft mount rockers 1.7 ratio
- MSD coil's
- 36 lb/hr injectors
- SLP 85 mm MAF
11-19-2006, 02:35 PM
#5
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Stock ls6 heads are 213cc intake runner. 243 is the casting # on the heads. The patriot heads are honed out to a 227cc intake runner. The TSP ones were hogged out to something like 247cc.
I would go with AFR 205's. If not that patriot's. I would avoid the Darts.
I would go with AFR 205's. If not that patriot's. I would avoid the Darts.
11-19-2006, 03:19 PM
#6
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Originally Posted by davered00ss
The TSP ones were hogged out to something like 247cc.
https://ls1tech.com/forums/generation-iii-internal-engine/600033-improvements-prc-ls6-street-heads.html
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11-19-2006, 03:24 PM
#8
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I'm running set of Dart 225 heads on my motor, the valvetrain is decent, stainless valves (Ferrera?) Titanium retainers and PSI valve springs. If only Dart CNC ported the heads? The flow numbers of Dart 225 heads are on par with AFR 205 heads.
Patriot offers good valvetrain (dual springs titanium retainers), CNC ported and you can order them milled down to 58cc or larger 72cc chamber; and every size between.
Dart really needs, dual springs and CNC chamber then they would be more competitive with patriot and rest of offerings, my .02. Most distributors normally have Dart heads in stock, big plus.
Patriot offers good valvetrain (dual springs titanium retainers), CNC ported and you can order them milled down to 58cc or larger 72cc chamber; and every size between.
Dart really needs, dual springs and CNC chamber then they would be more competitive with patriot and rest of offerings, my .02. Most distributors normally have Dart heads in stock, big plus.
Last edited by Fraser@speedinc; 11-19-2006 at 03:29 PM.
11-19-2006, 08:04 PM
#10
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Originally Posted by davered00ss
Stock ls6 heads are 213cc intake runner. 243 is the casting # on the heads. The patriot heads are honed out to a 227cc intake runner. The TSP ones were hogged out to something like 247cc.
I would go with AFR 205's. If not that patriot's. I would avoid the Darts.
I would go with AFR 205's. If not that patriot's. I would avoid the Darts.
11-20-2006, 08:22 AM
#11
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Get the dart 225s. the dart 205s are what I have and for later upgrades they are limiting me. I personally put down 452 rwhp and 423 rwtq with bolt-ons, dart 205s and a futral f14 cam.
11-20-2006, 08:23 AM
#12
Originally Posted by 1997bird
The CNC LS6 heads from GM are 243 cc intake runner heads. I would imagine the Patriot heads are pretty close to the same.
Our runner volume is 227 +/-. This is one of the smallest 243 ported runners available. Our stage II heads are built with only the best products available, Patriot Gold springs, ti retainers, machined Super 7 locks, Ferrea valves, etc. These heads will perform very well for you. Yes, there might be a short wait for them, but the wait is well worth it.
11-20-2006, 10:07 AM
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Originally Posted by Fedge
on AFRs website it says that the 225s are ideal for 369 cid or greater or FI...shouldn't he stick with something 'smaller' like the 205s?
just curious, it's why i made the choice for the Stage II Patriots (not LS6)
just curious, it's why i made the choice for the Stage II Patriots (not LS6)
As for useing the AFR heads their 205's out flow both heads. So yes this would be a better option if you don't mind paying more money and waiting 3 month's for a set(unless you found a set on the shelf). But if your going to pay that much money I would use a set of ET Performance's 225 cc heads. With the ETP heads the angle has been rotated to 11 degree's rather than 15 degree's. By doing this your port velocity is greater on the 225 vs a 205 head because the runner is narrower and longer. One of the other advatages is better air flow number's!
11-20-2006, 10:35 AM
#15
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Go with the PRC Stage 2.5 5.3L heads for 1199.99 assembled with the PRC double springkit. Smaller runner than either head mentioned above, should be your best bet getting to 450rwhp!!
Let me know if you need any more info or can help out in any way!
Thanks,
Zach
Let me know if you need any more info or can help out in any way!
Thanks,
Zach
11-20-2006, 11:33 AM
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Originally Posted by Zach@Texas-Speed
Go with the PRC Stage 2.5 5.3L heads for 1199.99 assembled with the PRC double springkit. Smaller runner than either head mentioned above, should be your best bet getting to 450rwhp!!
11-21-2006, 02:33 PM
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hey zack what do the 2.5 5.3L heads flow
never mind I my lazy actually did something and looked it up on your site
never mind I my lazy actually did something and looked it up on your site
Last edited by lt1formula2000; 11-21-2006 at 06:49 PM.
11-21-2006, 03:11 PM
#20
Our runner volume is 227 +/-. This is one of the smallest 243 ported runners available. Our stage II heads are built with only the best products available, Patriot Gold springs, ti retainers, machined Super 7 locks, Ferrea valves, etc. These heads will perform very well for you. Yes, there might be a short wait for them, but the wait is well worth it. THANKS GUYS,I SELECTED THE CNC 243 FROM PATRIOT, DO TO THE PRICE AND UP GRADED SPRINGS.