Those of you that are using A HSR intake, What heads are you using? I need to get the best set of heads possible that will work with the Stealth Ram.

 

Im using a pair of AFR 190's. There isnt a "best" set of heads for the HSR. Im sure a pair of AFR 220's wil work real good on my engine. Your head choice is based on your budget and how you intend to drive your car. I chose my heads over the 220's because I felt that the package I came up with would give my car better drivabilty manners on the street where it will spend most if it time.

 

I didn't mean it that way. I want a top of the line head that will accept the intake ports of the HSR. I was looking at the AFR 220 cc heads, but it says they use a 1406 intake gasket. I would think that's a far cry from a 1205.

 

I use the 180cc AFR and when I rebuild the engine, I will port them out a good bit around 190cc but for a 220cc you have to add metal around the intake ports to seal them otherwise, your intake runners will be showing.

 

I just got this from Dave @ AFR

 

While I haven't asked around.
I don't think the bigger valves are of much benefit on a 355 due to the smaller bore.
The Brodix RR200's can be ordered with a 1205 port and come with a smaller chamber than the AFR210's. So it comes out cheaper. Make sure to order the right size rocker studs to match you setup too regardless of brand.
Or the Dart 200's come with a 1205 already as do the Trickflows. Which are cheaper still.
Brodix also has the IK200 with a 1205 IIRC.

 

I'm thinkin 10:1 383 stroker, 554/554 lift hyd roller cam, and N2O.
I was leaning towards either the AFRs or Trickflows.

 

AFR 210 Comp Heads. Welded HSR Lower. 1205 Fel Pro.

http://pg.photos.yahoo.com/ph/americ.../ph//my_photos

 

Well, I think that I would avoid using Pro Topline heads with the HSR.

 

I went with Brodix Track 1s. I had my intake welded and then re machined and then ported the stealth ram and port matched it with my ported track 1s and mine flowed 292 through the entire induction. In my opinion you need to port match every motor even stock motors.

 

ok, here's what I got: 383 stroker, hyd roller, Callies Stealth Crankshaft ,
JE Pistons
Oliver Billet Rods
AFR 220 Heads
Hydra-rev Kit
ARP Bolts
TPIS ZZ9 Cam

My intake is out getting welded up right now.

 

dart iron eagle.

 

What about the new patriot sbc heads? They flow as good as the AFRs and they come with good springs and are $1295 a set. Anybody know if they use the 1205 gasket? if they did i would buy a set for my HSR 383 im building!

 

Why such a small cam with those heads and intake?

 

With your combination you should have a bigger cam. That is why I'm changing mine.

 

That's how I bought it. It was in a 90 vette with a carb intake and s/c and ran a 9.87 quarter.

I also have another cam . Its a .554/.554 lift, 224/224 dur @ .050
But I was thinking about a Comp Cams 12-433-8

 

Patriots have mixed reviews on LS1 sites, known as a low cost alternative, a substitute for a true high performance head. You get alot for your $$, but don't think for a minute that they are the same as a AFR, Dart, or in the league of a Brodix. If you want the best call TEA (total engine airflow) they sell every major brand and have a strong reputation. They'll direct you to the best 1205 port for your application.

 

Do yourself a big favor and get a larger cam. I have already reached the limit on my ZZ9 cam with 1.6rr.

 

I already have heads.

Originally posted by DeHoyos
ok, here's what I got : 383 stroker, hyd roller, Callies Stealth Crankshaft ,
JE Pistons
Oliver Billet Rods
AFR 220 HEADS
Hydra-rev Kit
ARP Bolts
TPIS ZZ9 Cam

 

I haven’t dealt with or seen flow numbers for patriot’s more recent offerings, but the stuff has been around for a while is very middle of the road, at best…

 

Just to compare..

Patriot 195cc CNC ported super street heads..
valve lift Intake Exhaust
.200 140 105
.300 193 144
.400 230 176 $1295/set
.500 259 190
.550 265 195
.600 270 201

AFR 195cc street ported heads..
valve lift Intake Exhaust
.200 132 108
.300 198 156
.400 240 178
.500 260 190
.550 262 192
.600 262 194


Looking at the flow numbers they outflow the dart, brodix and maybe even the AFRs. How can you say they arent in the same league? I know their name isnt as big but these particular heads outflow all three of those. For $1295 a set, seems pretty hard to beat!

 

How about the competition port heads ???

.200 135 110
.300 201 157
.400 249 180
.500 275 195
.550 280 202
.600 280 208
.650 282 212

Or the 203CC heads with a 1205 port ???

.200 129 112
.300 188 145
.400 234 185
.500 263 205 @ 1499/set from AFR
.550 270 210
.600 275 215
.650 275 218
.700 272 220

 

As i said before at $1295/set the price is hard to beat. The 203cc head flows just slightly better but are also a few hundred dollars more. I posted those numbers for those that said they are average at best. The Brodix RR200 are more expensive and dont even flow what the patriots do. As for the quality, i don't know i haven't purchased a set yet. But those heads seem like an awesome head for the price!

 

Those are impressive numbers, are they patriot’s numbers or an independent’s numbers testing the patriot heads?

What casting do they start with? They aren’t some of the new style castings like the pro toplines with the tall/narrow ports, are they? I can’t imagine those working with an HSR…

Back to the original question… you’re actually asking the wrong question, OK, you want to run an HSR, what else are you running? What’s the rest of the engine combination?

FWIW, It’s hard to beat AFR’s out of the box. Usually you have to go roughly a step or 2 bigger on the intake port size with other heads to get similar flow numbers.

 

That's what I meant. from a quality standpoint some have had issues with their (patriot's) heads. Especially with them not living up to advertised #'s. or even flow 'under the curve' compared to the high end heads.

do a search on LS1tech.com about patriots- you will find some have had problems even with build quality.
Bang for the buck nobody will argue with you about patriots, but for a max effort, top of the food chain head patriot is not #1. If your on a budget and want to go fast get patriots - but as this guy said he already has AFR 220's which to me is a max effort street/race head. to go past them you start to get exotic, and really expensive

 

cylinder heads can be looked at several different ways. Out of the box if you don't want port work, or, which heads do well with porting. If you can afford a Wilson custom intake then the brodix
-12 is very desireable with around 370 plus CFM. This is the head Kinser and all the sprint car guys use. It is all about air flow. If you are using a stealth ram then you need to get it welded to fit a 1206 and seriously look at a ported head that works well around 600 lift so your cam won't be too crazy. You can get away with 110 lobe center but 112 is more driver friendly. There are guys with the fast burn heads and relatively small cams running in the 11s which is very fast. Do a search and talk to some different people who are head knowledgable (Porters) and especially people who use a superflow and they can give you some real world numbers. The brodix website list what there heads flow at every valve lift and explain what offset and all the special hardware you need with each head. Ed Wright (Fastchip) is very knowledgable about what works since he has seen about every known combination and has had the pleasure of dynoing them in his shop. Just my country boy commocn sense.

 

So since there are tons of people out their running the hsr, i was wondering since it provides no egr capabilities will my car still run ok with it? i have just recently purchased the stealth ram and throttle body and fuel rails. I noticed there is no EGR spot so i called Holley and they said it would run fine. I called Summit and they told me there is no way it would run without it, and a freind at the chevy dealer also said it would run like crap with no EGR. Who do i beleive?

 

You don't have to have an egr. That problem can be eliminated with a custom e-prom. My car does not have egr or vats.

 

will it run ok without a custom eprom??

 

So far it is on my car

I have the stuff to tune it, just now the time to do so.