Best Heads for 347 Stroker

[2000xp8]

I don't dislike afr, just don't see any real world track numbers from them that impress me. They can recommend whatever they want, but i prefer proof in the form of ET's than dyno numbers.

I see NA 347 cars in the 10's quite often, not one ever have i seen with afr's.

And justin, done right with the 347 and victors, the right intake and cam, you can expect 10 second timeslips.

 

[5spd GT]

E.T's vary on drivers/suspension/power.

Dyno numbers (under the curve) matter most because it shows the potential.

You can have to equally equipped cars but one with drag suspension and the drag equipped car is going to run quicker. How does that compare heads?

I bet you could put a afr 165 equipped headed stroker with suspension work against a vic jr. equipped stroker with stock suspension and the afr 165 would run quicker. Does that mean that head flows more for the combo and better. Nope.

Dyno numbers in this case are more reliable...less factors to factor in.

I'm not for sure why you haven't seen good numbers...look around

 

[Paul Perreca]

my buddy is running the performer RPM and E cam, corba intake- thing takes off like you wouldn't beleive, in what feels like all RPM ranges, ppl think it's got a blower cuz it totally whoops up the LS1 cars

 

[2000xp8]

E.T's vary on drivers/suspension/power.

Dyno numbers (under the curve) matter most because it shows the potential.

You can have to equally equipped cars but one with drag suspension and the drag equipped car is going to run quicker. How does that compare heads?

I bet you could put a afr 165 equipped headed stroker with suspension work against a vic jr. equipped stroker with stock suspension and the afr 165 would run quicker. Does that mean that head flows more for the combo and better. Nope.

Dyno numbers in this case are more reliable...less factors to factor in.

I'm not for sure why you haven't seen good numbers...look around

Link me to people that have put down more than 425 to the wheels with afr NA combos, so i can see.

 

[CoupedUp]

I'm all up on that AFR jock :Word:

I completely agree the AFR's are not the end all of performance.
I personally have experienced great reliability and good track times with the 185's on my 331. They are an excellent head and I don't challenge your opinion on the victors ... If I was gonna boost the car or wanted more top end I would have gone with vic's.

My SSP runs a low 12 on street tires and makes in the neighborhood of 360rw with my combo ... also dependent upon the atmosphere.

I'm completely satisfied with my car and if that makes me up on jock ... then up on jock is where I want to be. :SNSign:

 

[2000xp8]

I'm all up on that AFR jock :Word:

I completely agree the AFR's are not the end all of performance.
I personally have experienced great reliability and good track times with the 185's on my 331. They are an excellent head and I don't challenge your opinion on the victors ... If I was gonna boost the car or wanted more top end I would have gone with vic's.

My SSP runs a low 12 on street tires and makes in the neighborhood of 360rw with my combo ... also dependent upon the atmosphere.

I'm completely satisfied with my car and if that makes me up on jock ... then up on jock is where I want to be. :SNSign:

360? Guys make more than 360rwhp with 306's.

12's? 12's are great, but a good combination with a 331 should produce low 11's or at least a mph around 120.
And a good combination on a 347 should produce either 10's, or mph's in the low to mid 120's.
I see these cars first hand nearly every day, at the guy in my signatures shop. One of the cars sported a 347, an old set of canfields, victor intake ran 11.0 on slicks. No suspension mods, no cage, nothing out of the ordinary, it's acutally an ugly ass brown lx.
Another went 10.70@124 w/ track heats ported on the exhaust side, victor intake, this car had a full drag setup.
Dyno'ed at 444rwhp.

I don't see any cars with afr 185's doing this, maybe they can, maybe they can't all i said it that they are unproven.
I didn't say i don't like them, in fact my head guy said they are some of the best box stock heads, meaning that the factory valve job is usually near perfect, and the spring seat pressures aren't a mess.

Only one car on this site i've seen with afr's impressed me, but the rwhp number did not match the mph or ET at all.

I believe things when i see them, and i haven't seen anything yet, not to say i never will.

 

[304billet]

Show me all the proven track and HP numbers 185's have made with 347's?


I see first hand what victors can do on 347s, along with canfields, and tw's.

But you don't see many 347 afr 185's setups.
So as i said above, everyone is on afr's jock on this website because the 165's work good on a 302, but afr 185's on a 347 are unproven.

Afr's are not the gods of all heads, just because the internet makes it look that way.

Wrong!!!!!

What r u talkin about. U see a bunch of 347 strokers w/ AFR 185's. Do a search on the boards dude before u make stupid comments like that.

347 stroker w/ ported AFR 185's, ported Downs lower, Comp Cam XE282HR, 10.3:1 comp, 93 octane, 30lbers, 400rwhp and 400rwtq, NA. There was more left on the table.

Either head the AFR 185/205, the TFS R or the Victor Jr r all great heads. It's the head, intake, cam, combo that set's u apart.

 

[CoupedUp]

360? Guys make more than 360rwhp with 306's.

12's? 12's are great, but a good combination with a 331 should produce low 11's or at least a mph around 120.
And a good combination on a 347 should produce either 10's, or mph's in the low to mid 120's.

Why are you knocking my car.
It is right where I built it to be.

We all know a 306 can make good peak numbers, that is not at issue.
I built the car to have a nice broad power curve, pull hard on the street and still be able to lug it down to 1500 without bucking or acting up. It ran a low 12 on a 17" street tire. Yes traction was a major issue as I trapped with a decent mph and a less than stellar 60' time. Some run better and I know, I built the car to carve corners and be a clean street car ... not a strip queen. I achieved my goal and I'm more than happy. Of course with traction woes I prefer running it from a roll. I know I could have built more and then harness the extra power better, but I prefer the reliability tradeoff to max performance.

I don't see any cars with afr 185's doing this, maybe they can, maybe they can't all i said it that they are unproven.
......
Only one car on this site i've seen with afr's impressed me, but the rwhp number did not match the mph or ET at all.

We are of course talking about cars that were not built with street intentions. We can all build for launch prowess and 1/4 mile slips ... but there's always a trade.

I believe things when i see them, and i haven't seen anything yet, not to say i never will.

Well don't go stickin' your finger in an outlet ... there's electricity there even if you can't see it.

I take peoples word for many things when the general concensus from users is mapped out. People that use and have used vic jrs say they are a nice head ... I believe it. Would I consider the head more of a large cube or strip head ... yes.

 

[5spd GT]

360? Guys make more than 360rwhp with 306's.

And how streetable is that? What accessories are taken off? Horrible argument. How high does it have to be revved?

12's? 12's are great, but a good combination with a 331 should produce low 11's or at least a mph around 120.
And a good combination on a 347 should produce either 10's, or mph's in the low to mid 120's.
I see these cars first hand nearly every day, at the guy in my signatures shop. One of the cars sported a 347, an old set of canfields, victor intake ran 11.0 on slicks. No suspension mods, no cage, nothing out of the ordinary, it's acutally an ugly ass brown lx.
Another went 10.70@124 w/ track heats ported on the exhaust side, victor intake, this car had a full drag setup.
Dyno'ed at 444rwhp.

So is it all about power and track times when someone wants a stroker. That is a big NO. People put those bigger heads on there to go just that much faster and not have the same style port velocity and under the curve characteristics. More track oriented. Another poor argument on your part.

I don't see any cars with afr 185's doing this, maybe they can, maybe they can't all i said it that they are unproven.
I didn't say i don't like them, in fact my head guy said they are some of the best box stock heads, meaning that the factory valve job is usually near perfect, and the spring seat pressures aren't a mess.

So just because you haven't seen them means they are unproven. I would suggest searching around the forums and get the whole combo and not just what the head is and you will see how close they really are as long as the variables/car type are similar.

That isn't what that means, they also outflow any in their class in most of their respective classes, particularly under the curve flow numbers.

Only one car on this site i've seen with afr's impressed me, but the rwhp number did not match the mph or ET at all.

So I guess the driver had nothing to do with it at all?...

Bad argument.

Under the curve is a strong point on AFR's and your going against that based on driver skill

I believe things when i see them, and i haven't seen anything yet, not to say i never will.

So just because you haven't seen anything means the heads overall are unproven. Go talk with Ed Curtis, Rick, etc...or airflowresearch on their heads and you might get a different opinion. In fact, just check around on the web

 

[IntenseBlue]

AFR 185s

 

[2000xp8]

You guys love your afrs, i don't care enough to call ed curtis.
You guys get all wound up because i don't love them, just notice three of you responding, no one so far of any of you jsbr produced a car that even suggests over 400rwhp.

Where's the proof? I mean you guys act like you see it all the time.

Link me.

So far i have three guys that are all going on rumor, not fact.

If you swap to a 347 and don't produce 400+hp you wasted your money.

Couped up, i'm not trashing your car, but a 331 with afr's should be in the 11's, why haven't you said what your mph is?

 

[5spd GT]

You guys love your afrs, i don't care enough to call ed curtis.

That's your problem, not ours.

You guys get all wound up because i don't love them, just notice three of you responding, no one so far of any of you jsbr produced a car that even suggests over 400rwhp.

I'm not wound up. Your just thinking a combo is all about peak power or power and then you said E.T. is what matters. Lol.

Where's the proof? I mean you guys act like you see it all the time.

In the pudding.

Look around...

Link me.

Link yourself by using the search function.

So far i have three guys that are all going on rumor, not fact.

That's a first.

If you swap to a 347 and don't produce 400+hp you wasted your money.

Funny statement. Very funny. Go tell grn92lx that he wasted his money or others. They got what they wanted...it isn't all about power.

 

[89white50]

for a 347 i would personally go with victor jr's. then pick the cam and intake depending on how high i wanted to rev. 400rwhp shouldnt be hard at all NA. but the eddys have a lot of room to grow. The TFS R's are pretty sweet too though. i also could care less about afr's.

 

[5spd GT]

89white50 - Reason that you could care less about AFR's? 2000xp8 gets this "advice" (envy) from his engine builder....where do you get yours?

 

[stang2841]

this argument will never end..


ppl want a mean ass track car with serious power.. and great peak numbers...


then there are ppl who want a good driving stout street machine..


on the track I believe that the AFRs arent exactly the best way to go as well..


and I agree with the 400rwhp minimum if your building a 347...

if your spending all this money I'd want big numbers and a awesome ET.. but thats just me..

 

[5spd GT]

stang2841 - Been a while...got any proof of AFR's not performing at the track? Some are coming in here with AFR envy, I can already tell That's like me saying, I don't think the YS trim blowers are very good because I don't have one...lol.

Peak numbers are very irrelevant at the track...

 

[ms93gt]

So is it all about power and track times when someone wants a stroker. That is a big NO.QUOTE]

I would have to disagree with that statement. If your not looking for more power or faster times then whats the whole point of spending all that money and going through all the hassle to build a 347? Why not just refreshin up a 302 or do a 306? Majority of people who build strokers are looking for more, not less.

 

[2000xp8]

5sd, you guys kill me, first i say i want track numbers, and someone tells me there is too many variables, so i will adjust my thinking possibly after i see dyno numbers and still NOTHING.
I agree, i'd much rather see track numbers, but since they don't exist i'll take what i can get.
What i'm saying is i'll take either at this point, dyno number or times, but so i can't find any.

When you determine if a head works, you don't try to disprove it, you try and prove it. How the hell do you propose to get proof they don't work at the track like you request? When things don't go the way people plan, they don't speak up.

 

[stang2841]

5spd GT - yes it has been a while.. the old 91GT I had is gone and sold.. I had a 98 T/A m6 for a while and sold that and I'm back.. in an 88GT


dont have AFR envy.. but if I had the money I wouldnt mind some 165's for the lil 302..

as always I disagree with your way of thinking when it comes to engine building... I cant knock the motor you got because it is much more then what I have at the moment.


dyno numbers ? track times yet?

 

[5spd GT]

I would have to disagree with that statement. If your not looking for more power or faster times then whats the whole point of spending all that money and going through all the hassle to build a 347? Why not just refreshin up a 302 or do a 306? Majority of people who build strokers are looking for more, not less.

You took that comment out of context. Their is a difference betwwen a street car and a track car with a 347. Should I ellaborate on that?