Estimate power? 347
- Thread starter wikdsvt
- Start date
wikdsvt
Club Member
It has to be "tame" enough for my wife to drive it with the baby, but quick enough so i can have fun with it. It's a cruiser, not a racer. not saying it might see the rare stoplight to stoplight race. LOL
SuperStang90
Club Member
A better set of heads would net you 50+ more HP. Like some trick flows or AFRS. Which at 350-375 HP it would be alot more fun and not extreme enough for your wife to not be able to handle it
camaromann
Forum Member
Depending on your compression, cam selection and converter selection you COULD make 330'ish to the tire with what you have. That is nothing to turn your nose up at either. 300rwhp is much more power then 9 out of 10 people think they have when they start changing parts on an engine. The fact that your NOT putting it in a 3500-4500 pound car, should be a fun time 
I believe you said this was a mid 60's Mustang??
I believe you said this was a mid 60's Mustang??
wikdsvt
Club Member
Depending on your compression, cam selection and converter selection you COULD make 330'ish to the tire with what you have. That is nothing to turn your nose up at either. 300rwhp is much more power then 9 out of 10 people think they have when they start changing parts on an engine. The fact that your NOT putting it in a 3500-4500 pound car, should be a fun time
I believe you said this was a mid 60's Mustang??
'66, which is very light.
Curb weight 2,445 pounds (1,109 kg) (base) (looked it up)
The stall is ~2800. I THINK, I'll have to look it up.
425rwhp/522rwtrq was a TON of fun in my 5000lb Lightning.
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quickstang1983
Club Member
I have a friend with pretty much that exact combo in his gt350 and it put down 287 to the tires. He has a 5 speed though.
Quick86
"New Thread" & "Post Reply" button abuser
How the fuck are these 347ci motors only making 300hp or less!? That's a waste of fucking money for a stroker kit only to make what I make with a fucking stock rod length motor. 306ci with iron heads, f cam, weiand intake, holley 650.....the rest of it is all bolt ons. OVER 300 to the tire. And I'm running with a pretty fat tune!!!
Billydroveit
Club Member
That's what i was thinking... I had the X heads a b cam on a 302 with a Demon 650 and made over 300. (according to Calculator about 330) It was tame enough for my wife to drive too. With a 3.73 it went 12.3x on motor in a 2900 Lb car and the tune way off. Reading Coral i don't get why guys can't make over 300 with simple shit, but they fail ALOT...lol
Quick86
"New Thread" & "Post Reply" button abuser
No shit. The day I decide to go with a 331ci motor and rev the nuts off of it - I am also going to be going for 400 to the tire naturally aspirated on pump gas. This whole "300hp out of a 5.0 block N/A is good!" shit has GOT to stop. lol.
camaromann
Forum Member
And what back woods trailer dyno was this on? Stock 302 makes roughly 220hp give or take a hand full. Cam, heads, intake makes you think your gaining 150hp or more? I think not.
Billydroveit
Club Member
He had it on a Dyno and had the carb tuned professionally. 300 plus on a stock block with a decent head is easy. We did it for my buddy, with a TFS street head and a 560 lift cam went 11.96 in a 3000lb car. which a calculator says 350...
And by my math he gained 100HP or give or take, not 150. But it's easily do-able, even without changing a piston. My last 302 was factory short block.
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TooSlo86
Club Member
Yup, stock, never opened 96 explorer long block with P heads, B-21 cam, all other supporting goodies, 317rwhp@5750 346rwtq@4300 in SAE correction, dyno sheet is somewhere on MM in a thread. Just a mild little 302 with a good tune. Back after that dyno it went 12.47@110. This year with all the changes it's gone 12.29@111. The new dyno #'s will be in tomorrow morning as it's going back on the same dyno! Very excited, and ready to listen to the haters telling me not possible :icon_smil
It always blows me away that there are so many that can't understand why they slap a set of aluminum heads on and can't make or run the #s this "stocker" can, even with stroker some times! Very easy to get 300 at the feet on iron heads.
camaromann
Forum Member
There is entirely to much dumb in this thread. OP, if you would like real help feel free to PM me.
TooSlo86
Club Member
Or you could simply interpret what has been stated here by several others as answering the op’s question as; yes, you are correct, with a 347 and p heads dependent upon cam/compression and other factors, you would most likely end up around the 300 watermark without a hassle. But that’s just using the “backwoods” air dyno of course :wink:
The catch is, the p’s on the stroker are going to be a BIG choke point, it should make a good amount of torque but will lack the ability to make a reasonable amount of HP for the c.i and it’s damn sure not going to be doing it at high rpms which sounds like he’s fine with for the intended purpose. I’ve looked into this myself and decided it’s just not worth strapping those little heads onto a 347, but he DID say he wanted good manners and it wasn’t a “race car” Have I actually done it myself? Nope! Have you built up one of these 302 based motors that performs like it can’t possibly says you? I’m guessing you must have tried hence the bitterness and lack of ability to accept what people that HAVE accomplished it are saying.
As far as all the dumb, you got me, and I’m sure everyone else that “says” it can be done. Mine is really a 310c.i. Ed Curtis prepped s/b, p-heads, and cam that I enjoy driving 85 miles a day just so I can throw all the cash away and only go 12s! RIGHT. Just like the moon landing was filmed in a Hollywood Basement, all of my youtube vids are REALLY my 175rwhp stock 86 engine running low to mid 12’s. Honestly??
I bet my Vortec headed sbc 350 can’t run in the 12’s in a 3400lb turd either since all I’ve done is “heads, cam, and intake” for 150HP right?
Hijack over, armed and ready for the retort
Was this all worth my wasted time? Hmm, nope. Have a good one!
The catch is, the p’s on the stroker are going to be a BIG choke point, it should make a good amount of torque but will lack the ability to make a reasonable amount of HP for the c.i and it’s damn sure not going to be doing it at high rpms which sounds like he’s fine with for the intended purpose. I’ve looked into this myself and decided it’s just not worth strapping those little heads onto a 347, but he DID say he wanted good manners and it wasn’t a “race car” Have I actually done it myself? Nope! Have you built up one of these 302 based motors that performs like it can’t possibly says you? I’m guessing you must have tried hence the bitterness and lack of ability to accept what people that HAVE accomplished it are saying.
As far as all the dumb, you got me, and I’m sure everyone else that “says” it can be done. Mine is really a 310c.i. Ed Curtis prepped s/b, p-heads, and cam that I enjoy driving 85 miles a day just so I can throw all the cash away and only go 12s! RIGHT. Just like the moon landing was filmed in a Hollywood Basement, all of my youtube vids are REALLY my 175rwhp stock 86 engine running low to mid 12’s. Honestly??
I bet my Vortec headed sbc 350 can’t run in the 12’s in a 3400lb turd either since all I’ve done is “heads, cam, and intake” for 150HP right?
Hijack over, armed and ready for the retort
Was this all worth my wasted time? Hmm, nope. Have a good one!
Quick86
"New Thread" & "Post Reply" button abuser
Do you want me to upload the dyno sheet from Jakes Automotive?
I adjusted the tune before it went on their dyno from their initial tune and picked up more power. There is still more to be had.
Hell, pay for the dyno time and I'll let you stand there and watch it make the torque and hp curves right in front of your eyes.
You're correct - there IS too much dumb in this thread. And it's with the people that think a 5-liter Ford cannot make over 300hp with so few cubes.
Casper302
Club Member
You seem to be the only dumb in this thread.
Casper302
Club Member
Look at 1979Hatchbacks old motor. Stock long block (crank, rods, pistons) TFS Heads, victor jr intake and a custom cam (.544 intake/.609 exhaust, had to notch the pistons) went 11.0's on motor with an Auto. That's well over 300hp.
MentalMisfit
Club Member
Is it tough to fit a 351W in one of those cars? I'd skip the stroker kit and just get a cheapo 351w block.