scott5
Active Member
Currently i have a 306 and thinking about going up to a 347.. you guys think its worth it? it would still be bored .30 correct? i would just need crank and rods right?
any 347 guys?
- Thread starter scott5
- Start date
scott5
Active Member
I was thinking scat crank and rods?
mattman347
New Member
- Joined
- Jan 16, 2008
- Messages
- 13
- Reaction score
- 0
I know its not in my car but, i have a 347 in my broncoII and i love it!!! It would out run the cobra. I bought the kit from jegs about 4 years ago. I have a vid of it running...http://myspacetv.com/index.cfm?fuseaction=vids.individual&videoid=4730802
347stangn2o
New Member
- Joined
- Jan 4, 2008
- Messages
- 13
- Reaction score
- 0
I'm running a 347 built by Saum enginering on spray and I love it....but its comming out soon. I have plans for something bigger!
scott5
Active Member
yes the 306 is stock block..
i was thinking 331 but i already have one of those under the knife for a TT setup.
i was thinking 331 but i already have one of those under the knife for a TT setup.
Stangbangin
Active Member
- Joined
- Aug 16, 2006
- Messages
- 642
- Reaction score
- 0
393 or bust... I wish they were less expensive.. If I could do it over I'd build a 347. JUst swap over all my 306 stuff after the short block was built. But I'm about 3500 in on a 393 and still need the oil pan , lower intake, etc etc etc. DO it you won't regret it.
347 without a doubt...10:1 final compression with the heads...
Like Kevin said, you'll love it.
CHP makes a nice 347 kit. Uses a 5.315 long rod, a 3.400 stroke and a nice forged piston. Not too expensive either
AFR 185 heads, Ed Curtis/Jay Allen Custom Cam and a Holley SM2 intake...It's a proven power maker.
You'll hear a 331 is better cause it has a taller piston and better rod ratio. The 347 doesn't last as long as a 331 blah blah blah.
Rod ratio = eight rods per crankshaft... Rod ratio is nothing but BS and internet neophites trying to sound important. Same with rod angularity, piston compression heights and any other BS some idiot wants to say. Ask how many engines these people actually built. It'll bring out the truth. :coolsmiley:
Like Kevin said, you'll love it.
CHP makes a nice 347 kit. Uses a 5.315 long rod, a 3.400 stroke and a nice forged piston. Not too expensive either
AFR 185 heads, Ed Curtis/Jay Allen Custom Cam and a Holley SM2 intake...It's a proven power maker.
You'll hear a 331 is better cause it has a taller piston and better rod ratio. The 347 doesn't last as long as a 331 blah blah blah.
Rod ratio = eight rods per crankshaft... Rod ratio is nothing but BS and internet neophites trying to sound important. Same with rod angularity, piston compression heights and any other BS some idiot wants to say. Ask how many engines these people actually built. It'll bring out the truth. :coolsmiley:
94IVGT
Active Member
LAFENATU said:
thats not coming from just internet neophites, its coming from engine builders themselves. so you are telling me that DSS, ADPerformance are wrong??? cause i dont think so. ive got my 331 on the way with my dart block.
LAFENATU said:
This coming from a person who has actually spent MONEY for extrude honing and made 251 whp? Seriously? Come on...to say that a 347 can't make power is one thing but to say it DOESN'T have SOME disadvantages is ridiculous.
BOTTOM LINE: A STROKER MOTOR IN A STOCK BLOCK IS D-U-M-B.
<---knows frm experience.
Stangbangin
Active Member
- Joined
- Aug 16, 2006
- Messages
- 642
- Reaction score
- 0
well I would say a stroker on a stock block would be alright if you plan to stay NA and only make under 400 hp and it just be a street car. But like alot of us we want to go to the track and spray and supercharge so the stock block is just dumb. So I'd def look int getting an aftermarket block... I've split my fair share of blocks and none of them were strokers.ryclef331 said:
ryclef331 said:
Those words you read are copied and pasted from an email directly from Ed Curtis when I talked to him about building a stroker.
Ed must not know what he is talking about, right?
If you need me to, I can forward the email to you. :coolsmiley:
Let me know your email...I'll send it over.
When did I encourage anyone to build a stroker in a stock block?
So, since I have a motor with EH pieces on it, I don't know what I am saying right? That is what you are saying??? :idiot2:
Just to let you know, I didn't spend a dime on the EH. It was free from someone that works for EH...so does that still mean I don't know what I am talking about?
LAFENATU said:ryclef331 said:
Those words you read are copied and pasted from an email directly from Ed Curtis when I talked to him about building a stroker.
Ed must not know what he is talking about, right?
If you need me to, I can forward the email to you. :coolsmiley:
Let me know your email...I'll send it over.
When did I encourage anyone to build a stroker in a stock block?
So, since I have a motor with EH pieces on it, I don't know what I am saying right? That is what you are saying??? :idiot2:
Just to let you know, I didn't spend a dime on the EH. It was free from someone that works for EH...so does that still mean I don't know what I am talking about?
There is more than ONE engine builder in the world other than Ed Curtis. I have my sources...you have yours. He knows his shit don't get me wrong but I'd put a 331 in a stock block BEFORE I EVER put a 347 in a stock block any day of the week. Rod angle is Rod angle and a 331 has better a rod angle which produces less side loading of the block which (in a stock 5.0l block) is a major cause of splitting.
If you're talking aftermarket blocks....GO BIG OR GO HOME! Stroke it to the moon. IF i were to do it all again, I never would have BOUGHT a stroker motor...I'd be running a 306 on a fogger...but hey, live and learn.
Extrude Honing is garbage...if it was free...sure its better than stock but compared to professional hand porting, its crap.
and apparently you get free parts and ED CURTIS knows what he's talking about...
-Warm Wishes,
Ry
ryclef331 said:
Just out of curiosity...I am NOT trying act like the better one.
I just wanted to know what his opinion was.
I showed Ed this thread...I talk to him all the time
Here is what he had for you...
Ask this genius what the rod angularity is on a big block Chevrolet? A 454 in particular. Also the 400 small block Chevy. A 3.75 stroke and a 5.535 rod!
When a small block ford cracks, it's in between the main saddles and the cam bores. They are weak in that spot whether there's a 2.890 stroke or a 3.500 stroke crank in there. They usually crack from detonation and not rod angularity.
Some people are just so intrigued by internet rhetoric with absolutely no practical knowledge....
I built a few 358 inch small block Ford stroker engines with reground, cast iron 351C (3.48 stroke) cranks from CHP and their H beam 5.500 rods. All in stock blocks. Shifting at 6000 RPM and they'll run forever! One of the combinations from a while ago was street racing and toasted a DSS built, long rod 306 with an S-Trim! It consistently ran 11.00s at the track, all shifting the C4 at 6000 RPM.
Imagine that...
imp:Jasperstang308
Member
- Joined
- Mar 18, 2007
- Messages
- 212
- Reaction score
- 1
i wouldnt be scared to build a stroker in a stock block again.
you just gotta know how keep the block safe: good tune good balance job and wath your revs. hell i was talking to a guy today that spins his stock block up to 8k all day long
you just gotta know how keep the block safe: good tune good balance job and wath your revs. hell i was talking to a guy today that spins his stock block up to 8k all day long
I would NEVER put a stroker in a stock block ever again....the cubic inches gained can easily be made up with more head flow, boost, nitrous, cam, and/or intake in a 306. Its a general rule that 500hp is the limit of a stock block...yes you can push it past that but you're gambling. Noone can disagree with that. I'm spraying mine to 550hp...I know I'm gambling. I don't care.
Now, NOT EVEN GOD a.k.a. ED CURTIS, JAY ALLEN, or mother fucking SANTA CLAUS can tell me that a 331-347 doesn't side load a block more than a 302-306. I NEVER said that stroker motors were a LEADING cause of splitting blocks but they've been contributing factors to splitting blocks. Its physics people.
Now, NOT EVEN GOD a.k.a. ED CURTIS, JAY ALLEN, or mother fucking SANTA CLAUS can tell me that a 331-347 doesn't side load a block more than a 302-306. I NEVER said that stroker motors were a LEADING cause of splitting blocks but they've been contributing factors to splitting blocks. Its physics people.
scott5 said:
Your block is bored .030" over rather than .30"
I built a 331 stroker for my wife's '66 Mustang. The block is a 1968 so it is the beefiest incarnation of the stock block. It still is by no means comparable to a race block though. The engine was built for street torque and longevity. It should outlast my wife. If you are looking to build something that rev's to 8K RPM though then you are going to be cutting the life shorter. For the guy with the stock block that already rev's his engine like that, I take it he has valve springs engineered with enough pressure to be able to take that kind of reving so that the valves don't float? Stock valves won't do it.
And you don't have to rev over 6,000 to be fast, it's all in how you match things. Keeping it below 6,000 will make it live a lot longer too, but you guys have grown up in the "throw away" society so that may not be important to you.
Steve
Similar threads
