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Author
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Topic: Are these heads too much for my combo?
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boosted89Saleen
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Member # 2243
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posted
 
 
Was going to go with AFR 185's, but found these and they seem to be a killer deal. My question is, will they be too much head for my combo? I only looking to spin the motor to around 6500:)
New set of Canfields ported by Bennett racing. They flow 310/240 at 600. They have Ferrea valves, comp springs with 135#'s seat pressure and 340#'s open. Springs can handle up to a .625 lift cam. The heads have ARP rocker studs. The chamber is 61.5cc.
347
10.5/1
TFS Track heat
Hitech custom cam
Also, has anyone been able to get ahold of Brian at hitech in awhile? I ordered my cam almost 2 weeks ago, and have not been able to get ahold of him since then for an update. I have left several messages, emails etc:(
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1989 Saleen, 347, some mods
Posts: 221 | From: Sac, CA | Registered: Dec 2002
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Quick 88LX
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Member # 1950
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The amount of $ you would spend on the AFR heads to get them to flow like those canfield ones would probably be too much for most to dish out of their wallet. Shit, those heads will be VERY nice and if nothing else, they will accept a pretty big cam so you should be happy with 'em! I would be!!!
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"Men are Made, Not Born"
Car Picture : http://www.angelfire.com/theforce/quick88lx/
Original Member #495. Can I get my number back?
Posts: 1785 | From: Fairfield, CA/Okinawa, Japan | Registered: Oct 2002
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Joshs Ford
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Member # 801
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I didnt know you could have to good of heads. I guess its possible, just never heard of anyone saying "I need to put the old heads back on so i get more hp, cause these heads just flow way too much." The more cfm a head flows the better right? It just comes all down to the money, if you have the money, or come across a great deal. Get the heads that flow better.
Josh
Posts: 692 | From: San Ramon CA, | Registered: Jan 2002
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Jeff S
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Member # 371
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posted
Chico Stang,
It all comes down to OVERALL COMBINATION. Those heads on a stock 5.0 is obviously not a good combo and would probably make less power compared to stock heads.
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'90 Mustang LX: 8.53 @ 157.92 w/ 1.33 60' on DR's
'10 ZR1: FOR SALE
'14 E63 S: RENNtech ECU
'04 Gallardo: UGR TTG
Posts: 2121 | From: San Jose, CA | Registered: Aug 2001
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cobraman_1994
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Member # 467
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if you go by more is better, then we would all have 90mm throttle bodys on our cars. ![[Wink]](wink.gif) too much air=bad ![[Frown]](frown.gif)
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86 GT
Posts: 4882 | From: eldorado hills | Registered: Sep 2001
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93PONY
Mr. Valve Events
Member # 60
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posted
By no means are those heads TOO large for a 347 that spins 6500rpm.
FYI, canfields are not drilled for smog.
If you go with those heads let Brian know ASAP. He'll need as much info on the heads as possible to grind a cam to take advantage.
Not being able to get ahold of him is pretty normal. He's a very busy man.
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www.advancedenginedevelopment.com
SCT dealer
Dynotuning
(916)715-7569
Posts: 4266 | From: Fair Oaks, CA | Registered: Nov 2000
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JoeT
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Member # 298
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posted
If there isn't a power adder in the car other than N20 I doubt that AFR 185's would be much of a restriction.
I'm no expert but it *sounds* like those Canfields would want to scream way over 6500 rpms. You can go to big with a head, especially if you limit the rpms.
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1984 Ford Tempo AOD--- RIP
Posts: 6785 | From: San Jose | Registered: Jun 2001
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BlackNGold
CaliforniaFords.com
Moderator
Member # 655
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posted
If you can get the Canfield's cheaper than the AFR's I would go with the Canfields...Those look like great flow numbers for a 347ci...
Posts: 5132 | From: Bay Area, CA | Registered: Dec 2001
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boosted89Saleen
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Member # 2243
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posted
I have been trying to get ahold of Brian with no luck, I know he is probably busy but I have left several messages:(
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1989 Saleen, 347, some mods
Posts: 221 | From: Sac, CA | Registered: Dec 2002
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93PONY
Mr. Valve Events
Member # 60
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quote:
Originally posted by boosted89Saleen:
I have been trying to get ahold of Brian with no luck, I know he is probably busy but I have left several messages:(
Yep, that happens. Trust me, he's getting the messages. You can send flagged e-mails to him if you want to make sure he's recieving them. Once he reads the e-mail, you'll get a notice that he's read it.
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www.advancedenginedevelopment.com
SCT dealer
Dynotuning
(916)715-7569
Posts: 4266 | From: Fair Oaks, CA | Registered: Nov 2000
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boosted89Saleen
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Member # 2243
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posted
Oh well, gives me more time to spend on cleaning the engine compartment, lol. By the way, can I take the heads down to a machine shop and have them drilled for smog?
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1989 Saleen, 347, some mods
Posts: 221 | From: Sac, CA | Registered: Dec 2002
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93PONY
Mr. Valve Events
Member # 60
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Probably not. There has to be enough material above the exhaust ports in order to drill. It would really suck to have a machine shop drill it out, only to find out that they broke into the water jacket.
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www.advancedenginedevelopment.com
SCT dealer
Dynotuning
(916)715-7569
Posts: 4266 | From: Fair Oaks, CA | Registered: Nov 2000
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Stimson
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Member # 51
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posted
These canfields sound familiar. Is a guy named Paul selling them? Came off of a carbed 347 solid roller combo?
I think the heads are great for a power adder application or a stout solid roller 347, but they may be a bit too much for a naturally asperated "street" 347.
Posts: 2373 | Registered: Jun 2000
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93PONY
Mr. Valve Events
Member # 60
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I don't quite get why some of you guys say these heads would be great for a PA car, but too big for N/A.
IMO, PA motors don't need as much head as an N/A motor. Especially on the street.
Those heads on a 347 w/the proper supercharger or shot of N2O would put a 3200lb car deep into the 9's with ease.
IMO these heads would be great for a 400RWHP 347 streetcar. You just have to make sure you have enough intake & exhaust to support the heads. IE, ported Edlebrock or Holley intake, 1 3/4 longtubes, off-road H or X, free flowing mufflers, roller cam with 10+ degrees of overlap @.050, etc.
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www.advancedenginedevelopment.com
SCT dealer
Dynotuning
(916)715-7569
Posts: 4266 | From: Fair Oaks, CA | Registered: Nov 2000
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boosted89Saleen
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Member # 2243
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posted
Guy by the name of Jeremy Jensen is who I have been talking with about them, $1100 ![[Eek!]](eek.gif)
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1989 Saleen, 347, some mods
Posts: 221 | From: Sac, CA | Registered: Dec 2002
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JoeT
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Member # 298
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IMHO boost is a great crutch for heads that don't flow. It's also very easy to go to big with your heads. For example, an AFR 165 is great on a 302 till about 6500 rpms, much beyond that and the AFR 185 is a better choice. Still, from 3-5k the AFR 165 would be kicking the 185's ass.
On blown motors better flowing heads can give enormous gains relative to an NA combo, so sure E7TE heads can put out 400+ to the wheels with enough boost but put the right set of heads on there and you can crack the block with the same power adder
A good example of 'too much head' would be outlaw-spec trick flow heads on a humble 302 shortblock. WAAAAAY too much flow for the puny motor to handle, probably almost as slow as stock.
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1984 Ford Tempo AOD--- RIP
Posts: 6785 | From: San Jose | Registered: Jun 2001
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93PONY
Mr. Valve Events
Member # 60
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posted
HA!
I can't help but laugh.
If I were building a 306, I would have heads that flow 280+ intake at .550 lift. Use a mild cam, ported intake, free-flowing exhaust, etc.
I'd build it to pull 6500rpm, run on pump gas & have KILLER midrange torque.
Yes, you can go too large on heads, but IMO that has more to do with cross-section then flow.
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www.advancedenginedevelopment.com
SCT dealer
Dynotuning
(916)715-7569
Posts: 4266 | From: Fair Oaks, CA | Registered: Nov 2000
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boosted89Saleen
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Member # 2243
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posted
Has anyone heard of any quality concerns with the canfield heads?
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1989 Saleen, 347, some mods
Posts: 221 | From: Sac, CA | Registered: Dec 2002
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boosted89Saleen
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Member # 2243
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posted
Woo hoo, got ahold of Brian today! He didn't have any news for me though:( Anyway, what do you guys think about these cam specs?
.571/236 @.050 on intake, and .544/230
@.050 on exhaust, 111 intake centerline with 109* lobe separation
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1989 Saleen, 347, some mods
Posts: 221 | From: Sac, CA | Registered: Dec 2002
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93PONY
Mr. Valve Events
Member # 60
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posted
Nice cam. It will NOT pass smog though.
With that cam & the canfield heads 400RWHP will come easy.
That cam has 15 degrees of overlap at .050 lift!
You'd better get some stiff valvesprings. In fact, have Brian send some matched springs with the cam.
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www.advancedenginedevelopment.com
SCT dealer
Dynotuning
(916)715-7569
Posts: 4266 | From: Fair Oaks, CA | Registered: Nov 2000
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Chris M.
Ignore me, all I do is argue online!
Member # 1708
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posted
shade-tree, why does everyone of your posts have something in it about factory crap?
how can a thread about a 347 and 300+cfm heads end up with crappy E7TE heads in it?
Posts: 2828 | From: West Bay, CA | Registered: Aug 2002
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JoeT
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Member # 298
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posted
quote:
Originally posted by SIR Paint Job w/ '84 Tercel Sr.:
shade-tree, why does everyone of your posts have something in it about factory crap?
how can a thread about a 347 and 300+cfm heads end up with crappy E7TE heads in it?
to make a point, you missed it?
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1984 Ford Tempo AOD--- RIP
Posts: 6785 | From: San Jose | Registered: Jun 2001
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boosted89Saleen
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Member # 2243
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posted
quote:
Originally posted by 93PONY:
Nice cam. It will NOT pass smog though.
With that cam & the canfield heads 400RWHP will come easy.
That cam has 15 degrees of overlap at .050 lift!
You'd better get some stiff valvesprings. In fact, have Brian send some matched springs with the cam.
This isn't the cam Brian specced for me, it's one someone got for their car and never installed, wish I could run it though:( If anyone is interested, the cam is brand new and the guy is asking I think $250 for it?
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1989 Saleen, 347, some mods
Posts: 221 | From: Sac, CA | Registered: Dec 2002
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Stimson
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Member # 51
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posted
93PONY- When you stop laughing, why don't you go check out the runner volume of Bennet 300+ cfm Canfields and then come back and report your findings and then maybe recite a few passages from the testament Ed Curtis wrote with the help of God Almighty regarding flow vs port volume/cross section
I could ruin the fun and give you the specs right now, but learning is half the fun Here's a hint: flow vs port volume ratio isn't too hot....compared to lets say TEA TFS Stage III's.
Paint Job- If you need it to be spelled out for you... shade-tree was pointing out how you can have a 'weak nuts' running car with the good stuff (like your donkey) just like you can have a stout combo with stock stuff like shade-tree's old combo.
In closing, I'd like to quote a wise man from corral.net quote:
You're right Chris, you don't have to run race gas- because you feed that donkey, carrots!!!!!!
![[dance]](graemlins/dance.gif)
Posts: 2373 | Registered: Jun 2000
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