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347 stroker kit
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Posted by: CRZYCRL

How much hp and what times would you get out of a '94 GT with a 347 stroker?

Posted by: chrtra1

There are too many variables to accurately answer that question.

Posted by: VETTKLR

Well, I've heard that a swap from a 302 to a 351 is about the same as a 100 shot on a 302.

My advice to anyone shopping for a 347 is to fuck the bullshit and get a 351 right off the bat. The durability alone is worth every penny.

Posted by: Grape Ape

It isn't a real easy swap in an SN95. I'd build a 331 and call it a day. Then again, the 347 stroker is only good for drag racing as far as I'm concerned. A 331 can make nearly as much power and will outlast an otherwise identically prepared 347 90 of 100 times or more.

Posted by: BlackLight01

Quote:


	Originally posted by VETTKLR Well, I've heard that a swap from a 302 to a 351 is about the same as a 100 shot on a 302. My advice to anyone shopping for a 347 is to fuck the bullshit and get a 351 right off the bat. The durability alone is worth every penny.

It's really not just a simple swap . The 351 is wider that the 5.0. For a car that will see a lot of street duty your better off doing what Grape Ape said and going with a 331.

Posted by: Mr. P

Why not stroke a 351? Once you get into that motor, you can pump it way up.

Mr. P

Posted by: Grape Ape

Quote:


	Originally posted by Mr. P Why not stroke a 351? Once you get into that motor, you can pump it way up. Mr. P

On accounta them 351's aren't easy to install when it's all said and done... It' almost like WORK! I wouldn't just trade my engine for a nicely built 331, but if I were doing it over again, I'd build a 331 instead. I can make it make 450rwhp on motor, but I'd just add a turbo to a 9.0:1 engine that might make 300hp w/o the turbo, with my cyl. heads on it and go for it with about 30psi!

From there it's all dependent on whether or not I crashed!:btg:

Posted by: RacingJason

Quote:


	Originally posted by Grape Ape It isn't a real easy swap in an SN95. I'd build a 331 and call it a day. Then again, the 347 stroker is only good for drag racing as far as I'm concerned. A 331 can make nearly as much power and will outlast an otherwise identically prepared 347 90 of 100 times or more.

The 347 is available with 5.315 rods and can use a piston with better ring placement with the longer rods, so it is not just a race motor anymore. I like the 331 too, but for an N/A street motor a short rod 347 is my choice.

Quote:


	Originally posted by CRZYCRL How much hp and what times would you get out of a '94 GT with a 347 stroker?[/B]

373hp and 12.69 1/4 mile times.

Posted by: Grape Ape

Thanks for answering the ET and hp question... I couldn't do it!

While I've read about the changes allowing for the 347 to be usable, I would still use a 331 instead. For a street driver, any build chosen is going to net about 5-10more hp from one to the next and the 331 will still most likely last much longer. I, of course, just don't trust 347's anyway.

Posted by: 86pushrod

i have a 347...all the goodies, .060 over so it tally's out at like 352.. right now im on the verge of running 9's on the spray and i do drive it on the street with pump gas... if i could do it all over i woulda built a destroked 310 put a solid roller in it and spun it to 8k and gone class racing.i see so many fast 302's and 306's out there i would not stroke it unless you wanna do the whole bottom end.... just do the head/cam/intake thing,put some forged slugs in it and hit it with a 150 shot and have a blast..id also ditch the tuner bullshit.... more of a carb guy

Posted by: 86pushrod

Quote:


	I, of course, just don't trust 347's anyway.

is this because of the stroke or because the pin intersects the oil valley??
i know a couple people in the club up here that all went in on 347 kits through keith craft together for a discount ,.. 2 are blown and the other is n/a all 3 cars are street/show cars....

i was worried about the oil problem,i used a standard 302 pump to keep the flow down and had the guys over at custom design take advantage of the limiter/restrictors the dart block offers,...so far ive put a good hard 300 miles on the engine with no intrenal problems.

Posted by: Grape Ape

With an aftermarket block, I'd gladly build(and race) a 347. I don't like the rod ratio(which I can't even remember) and I never have. Better pistons available or not, I wouldn't make one a street car's powerplant. It's not necessary IMO. Either stick with a 331, which will make all but a few of the hp and torque a 347 will(but more safely), or step up to a 351W block and build an engine that will make the power and last a long time too.

Posted by: 86pushrod

i was just curious on why you disliked them?....they are pointless for a street car besides the gobs of torque they make,.. i just like to run under a 302 block weight at the track rather than the 351 weight,.... i would have rather built a 400+ windsor stroker but i did everything back asswards.

Posted by: Grape Ape

Gobs of torque? Wait'll you get to try a 408... 500 ft lbs(to the ground) is practically a no brainer with these(N/A). While the 347 does make plenty, by it's nature, it won't likely make what a larger engine will without a bunch of extra effort. That's the beauty of the 4" stroke...

Posted by: Tang

I don't know how good of a deal it is, but Keith Craft sells a 306 that makes 375hp/375ft lbs for like $4295

Quote:


	306 Standard Crate Engine 375hp/375 ft pounds of torque Fully machined production block, Production crank, Scat I beam rods, Forged replacement pistons, Plasma moly rings, Federal Mogul bearings, Hyd. Roller camshaft, double roller timing set, Edelbrock Performer or Brodix 5.0 Heads, roller lifters, Scorpion roller rockers, ARP head bolts, Edelbrock Performer RPM intake, Production style oil pan, BHJ replacement damper, 50 oz. balanced, blueprinted and assembled

I think that would be fun with a 100 shot

Posted by: Grape Ape

What, no crank girdle or windage tray? BOGUS!! hehehe

That's not awefully powerful if you ask me. That much power is pretty easy with those parts and I don't see much worth the extra bucks, considering the use of a factory block and crank. I've got about $1,000 more into my shortblock, but the difference is huge in what I can do with it as far as setup goes. I just don't like the weak block and I'm not in agreement with the lack of at least a girdle under it. Granted, you'd get longblock with their build, and the head choices(while small) are actually pretty good. I guess that's where the extra price comes in. The shortblock is only worth about $1,800 B&B'd.

Posted by: Mr. P

check out
Coast High Performance
at
http://www.coasthigh.com/Assemblies/assembly_index.htm
for specs on these engines.

Mr. P

Posted by: Grape Ape

CHP basically sucks. I shouldn't be so hard on them I guess. But they told me they'd sell me a forged crank 393 before anyone(including them) ever offered a forged crank for a 393. That's not good business and when I questioned to possible sale, they told me they'd already made and sold hundreds of them. :roll: It just wasn't true.

Posted by: Tang

Well they sure have a purty website

I want to build my motor myself, thats half the fun of cars.

Posted by: Grape Ape

Half the fun? :roll:

It's half the WORK! Half the fun is driving it... The other half is showing it off! Just my OP-onion!

Posted by: RacingJason

Haha! Coast! I have done my last business with them. For 6 or 7 months they have had a 383 Cleveland stroker kit order sitting around and eveytime I called it was "just finishing up". It STILL has not turned up here! Talk about one PISSED customer!

Posted by: Mr. P

Quote:


	Originally posted by Grape Ape CHP basically sucks. I shouldn't be so hard on them I guess. But they told me they'd sell me a forged crank 393 before anyone(including them) ever offered a forged crank for a 393. That's not good business and when I questioned to possible sale, they told me they'd already made and sold hundreds of them. :roll: It just wasn't true.

I agree about their business tactics, now that you've commented on em. They may, indeed, suck the big one, and it sounds like they do. However, they do have a purdy site, and it's the reference info I'm referring to (see spec comment). I'm not advocating spending money with em.

Hey, if you have an equal or better site showing SBF stroker info lemme know and I'll bookmark it for reference. I'll be building a SBF one of these days and I'm on the hunt for all the info I can get, just to be able to make a good decision.

don't take any wooden nickles and don't buy any cast steel cranks (because there aren't any cast steel cranks, not from anyone)

regards, P

Posted by: Mr. P

Here are some good references for build up of the 302 motor, including a good article showing what a stroked 302 can do. They built one that ran in the 11's so they are very quick.

Mr. P

http://www.fordmuscle.com/archives/...rse/index.shtml

http://www.fordmuscle.com/archives/...331/index.shtml

Posted by: Grape Ape

Idonno who I'd really recommend for a short block. I know it won't be C.H.P. though. Maybe Keith Craft Racing Engines. For heads, I'd definitely recommend Brian Tooley.

Posted by: VETTKLR

Anyone who builds a 347 stroker instead of just dropping in a 351 Windsor needs their head examined.

Keith Craft > CHP

Posted by: raxid

Anyone thought about passing the visual portion of the emission inspection? I am not 100% on this since I don't have to worry about it where I am at but I don't want to build a car that I can't drive in 5 years if they decide to reinstate it again. I mean with the 347 you might be able to pass it for a 302. With a 351 your f??ked! I like the torque and reliabillity of the 351 like the next person but its just a thought that keeps lingering in my mind.

Posted by: VETTKLR

Why would you be fucked? Visual inspection would just consist of visually confirming the presence of all smog devices, wouldn't it? Who gives a shit if it's a 4 cylinder or a Big Block 460?

Since when did increasing cubic inches become a problem with emissions?

I feel really bad for all the people that live under the nazi regime of smog inspections and all that crap.

Posted by: Mr. P

although there's not a lot of difference, there are some applications where a 302 will shoe-horn in, and a 351 won't. In that case, a 331 stroker would be pretty sweet.

Mr. P

Posted by: Grape Ape

Most states that require emissions testing aren't looking for anything more than catalytic converters. I've been to e-stations where the employess didn't even know what they were looking at if the hood was popped(training, eh?) and I've been to inspections where the hood is never raised. As long as it passes the actual emissions test, what's under the hood should never be a concern, much less an issue. I've also read about a few Mustangs with 351's under the hood that passed in California, where they evidently do the most vigilant testing. I'd guess that 9 of 10 "inspectors" can't look at a 351W and know it's a 351W rather than some other engine, including the very similar looking 302. If you don't know what to look for and actually look specifically for it(and nobody tells you), you'll never know.

Posted by: Mr. P

Hell the TSA can't even see a box cutter or a gun in a suitcase with reliability, how can you expect a smog tester to be able to tell the difference between a 302 and a 351. Those guys are probably numbed by all the cars they have to look at one at a time all day long, I don't think I'd worry about it unless you're making a LOT of noise and have a lot of eye candy under the hood.

mr. P

Posted by: raxid

I never thought of it that way. Your right, I looked at my 351 on my stand and then looked at my 5.0 in my GT. Throw the fuel injection setup on it and the accessories and it would become really hard to tell the difference in width and height. Expecially by someone not used to looking at them both together.

Now that my mind is now clear ( thanks guys) anyone have experience or hear much about the strokers for the 351. Like the 408 or 427? I wonder how the stock 5.0 computer with MAF will work with it?

Posted by: Grape Ape

An A9L will work with it, but you'll want an aftermarket supporting cast, like an MSD-7 or at least the 6al. Of course, you'll need to change intakes as well. I wanted an SDS complete harness and 42 lb injectors for a Spyder intake, but the cost made me hold off. I'm happy now, with my carbureted setup. If you want to run with a 351W block emissions legal and A/C, P/S, etc. remember you'll need brackets, harmonic balancer and pulleys to match the bigger engine. The parts are out there, but not real cheap.

The 408 is excellent and easily manages daily driving chores for most people who want that. A 427 is on the edge really, and the 408 is about as large as anyone suggests with a factory block. Many people don't like to go pat 393 without having a "special"(aftermarket or race) block.

Posted by: 410stroker

i love my stroker. 9 sec street car

Posted by: VETTKLR

9 second street car.....sweeeeeeeeet

You should post your fastest timeslip on the Timeslip Database! You'd be right up there with the rest of the Mustangs!

Posted by: 410stroker

OK i just did

but i'll say it in here too 9.46@144mph

Posted by: Grape Ape

What's it run w/o the juice? And how much nitrous do you use? Single stage, 2 stage?? I'm just curious because it's similar to my own setup.

Posted by: 410stroker

10.71 was fastest time on motor. i have a fogger system (500 shot) hits off the line till the end

as soon as let off the trans break it all there. full 500 shot.

Posted by: Grape Ape

WOW! 500 from the launch? That just CAN'T be good for traction!!! I'm actually surprized you don't gain more overall from the nitrous though. Have you tried a smaller shot just to see what happens? What kind of carb are you using? And what's the average mph on motor. I bought a nitrous timer for mine, but after looking it over and discussing things with a couple others, decided to send it back and just launch on a single stage and hope for traction. Have you got or thought about getting a timer for your car? BTW, that's about what I expected my car would run on motor, before building the new one. I never ran it on slicks though.

Posted by: Tang

He must be running Pro Stock slicks...lol

Posted by: 410stroker

i run et streets. yes i use to shoot a 300 shot off the line with a 1.39 60ft. now im gettin 1.48 with 500

950 cfm carb

Posted by: Grape Ape

So how much difference do you have after losing that tenth in the 60? Hmmmm.... You could use that progressive controller in a big way.

I know lotsa guys using 940-970cfm carbs on 393-418 combos. I use a modified 850cfm Holley and so far, it's working. I used a 1,000cfm Race Demon for a short time. It was just way too much carb for motor passes, so I couldn't do any "good" testing with it. I've been thinking about a Holley 940HP for awhile, but not yet.

Good luck with the launches! :btg:

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