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347 stroker kit or turbo ?

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Old 09-01-2009, 03:32 PM   #1
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Default 347 stroker kit or turbo ?

I have a 88 gt with trickflow inta
ke 225 fuel pump 24 lb injectors and a 75 shot of zex nos what would be a better addition a turbo kit or strokin it to a 347 and if I did that how much work is that, what all is involved
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Old 09-01-2009, 04:12 PM   #2
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Turbo kit will make more power than a N/A 347.Turbo kits a easy now a days.Call a company like Hellion and order a kit,bolt it on and viola.
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Old 09-01-2009, 05:11 PM   #3
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Why not both!?
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Old 09-01-2009, 07:46 PM   #4
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Why not both!?
pfft... turbo 427
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Old 09-01-2009, 09:48 PM   #5
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Originally Posted by wagontrain View Post
Turbo kit will make
more power than a N/A 347.Turbo kits a easy now .
THAT really depends on 1 or 2 turbos and how much boost vs how wild the 347 is, I've seen many a 347's put some turbo rides to shame
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Old 09-02-2009, 02:14 AM   #6
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pfft... turbo 427
I'm sure he doesn't want to have to fill up every 1/4 mile.
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Old 09-02-2009, 09:42 AM   #7
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No Replacement For Displacement.


And thats a difficult question to ask saying how much work is involved.

Easy answer for the 347 is alot of work.

Starting with replacing the bottom end, it would be much easier with the engine out, which takes a long time.

You then realise that the block needs to be boiled and probably decked, maybe punched out but at least honed.

Then you realise your oil pan, oil pump and what ever else you broke durring removal all needs to be replaced = $

The kits fairly cheap, put that in should be fairly basic with the proper tools and torque charts.

From what i have heard from everyone on this thread is your gonig to need some bad *** heads to feed the need.

The trubos a much better bet imo for simplicity

But personally id rather rebuild a solid bottom en,d and know it will last me a long time.

But the same thing applies: say you go 347 you can always boost it later/

say you buy the turbo, im pretty sure if you decide to go 347 im pretty sure you can still use it? maybe? noon on the topic here not sure

also question will a 347 be alot harder on gas then a 302?
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Old 09-02-2009, 09:47 AM   #8
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i personally would do the 347 and i am starting to now,

( had a guy with 3 stock 302s for sale and i emailed him about them but he threw them all out cause they were in the way one was a 90' with only 100k miles on it tear ) anyway

id like to say i touched every piece in the engine and i know everything about it
its gunna be expensive, but the $ never stops with the 5.0
it will be much more time consuming and probably more $ but its all in the fun of it!
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Old 09-02-2009, 12:48 PM   #9
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If you are going to build a 347 and boost it,it will never live in a stock block, in the real world a one piece rear main block always breaks around 600 hp at the wheel.I don't care who you are or who you know,the block can not handle the torsional loads at the hp level.You could put the turbo on your engine now make some good power and in the mean time, before you break it, you can start on the next one making it handle a 1000 hp and turn it down to make safe 800.I also don't care for the 347 in that deck height.Go 331 ci in an 8.2 unless you use big bore or use a 9.2 or 9.5 deck, it all cost the same when your at that level.
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Old 09-02-2009, 01:41 PM   #10
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with the 347 your going to need the crank, rods, pistons, rings, bearings, gaskets, machine work. on top of that your going to need good heads, push rods, bunch of new gaskets, new head bolts/studs, and exhaust upgrades would be good. youll see 350-375rwhp on pump gas

with the turbo, you just need the kit and fuel upgrades. the kit will of course come with headers and dp so no need for exhaust upgrades. youll see 400-500rwhp depending on boost level on pump gas

depends on what you want tho
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Old 09-02-2009, 02:00 PM   #11
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It depends on what you want. N/A builds are nice because of greater simplicity, less stuff to plumb in, less heat on internal components etc. Turbo definitely allows for a lot of power on pump gas in a reasonably small engine setup, so you still retain decent mileage, and you don't need wild cams to make power in blower apps, so better drivability etc etc.

Personally, I like n/a because of simplicity, and it's a tad more impressive to build big power n/a than blown. Blower engines can make insane power on pump gas though. The extreme example being cars like the SSC Aero versions, that put out over 1,000hp in factory trim.
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Old 09-02-2009, 04:19 PM   #12
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Plan on buying an aftermarket if you are serious about the turbo thing. Heads too as the factory heads just won't flow enough.
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Old 09-11-2009, 01:54 AM   #13
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Quote:
Originally Posted by wagontrain View Post
I also don't care for the 347 in that deck height.Go 331 ci in an 8.2 unless you use big bore or use a 9.2 or 9.5 deck, it all cost the same when your at that level.
What exactly are the advantages of 331 vs. 347 deck heights?
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Old 09-11-2009, 02:10 AM   #14
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^^^ yes please enlighten us.. you better not say anything about " rod ratio " either
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Old 09-11-2009, 01:17 PM   #15
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Turbo http://www.on3performance.com/mustang50.html Have read great results with this kit!
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Old 09-12-2009, 12:52 PM   #16
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hey guys its been awhile but im back, lol. im sure you missed me, lol. anyway if you wanna know the truth, it basically depends on what you want out of it. with the 347, like everyone says its gonna cost you some money. you have to buy a crank, rods, pistons, bearing, gaskets, new bolts (old ones may be stretched under torque), it needs to be rebalanced under 28 oz instead of 50 oz. the blocked will most likely have to be cleaned no matter what, bored .030, and notched for crank clearance. a good kit, depending on how much power your wanting to make can cost anywhere from $800 to $1500. but in the end you'll have a bottom end you can count on to not wear out a week or two later. also, is your stock motor capable of handling the kind of power a turbo will put through it? the turbo kit will be easier to do because you can install it without pulling the motor. but id much rather have a 347 than a turbo because when you have fast car all motor, compared to one who is boosted, imo in the mustang world all motor cars are much more appreciated. dont get me wrong a turbo looks sweet and sounds amazing, but any forced induction to me unless your pushing 5-6 lbs of boost is alot on a stock bottom end. besides either way you look at it, youll have to upgrades your heads if you wanna get full power, so in other words build a healthy bottom end, run some nitrous, or all motor, and save up for a turbo at a later date. End of story.

im here all week!! lol.
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Old 09-12-2009, 05:09 PM   #17
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There was a guy on here with a turbo stock longblock 302 and he was making like 430whp, so I'd have to go with turbo.
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Old 09-12-2009, 05:41 PM   #18
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Quote:
Originally Posted by txstang347 View Post
What exactly are the advantages of 331 vs. 347 deck heights?
It has to do with rod to stroke ratio,but not why I don't like it.Having that long of a stroke and short rod puts alot of thrust load on the skirt, skuffing the piston, also the longer stroke pulls the piston out of the bottom of the bore making the piston rock more wearing out the rings and piston.my .02
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Old 09-12-2009, 06:38 PM   #19
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Originally Posted by mustangmike33 View Post
hey guys its been awhile but im back, lol. im sure you missed me, lol. anyway if you wanna know the truth, it basically depends on what you want out of it. with the 347, like everyone says its gonna cost you some money. you have to buy a crank, rods, pistons, bearing, gaskets, new bolts (old ones may be stretched under torque), it needs to be rebalanced under 28 oz instead of 50 oz. the blocked will most likely have to be cleaned no matter what, bored .030, and notched for crank clearance. a good kit, depending on how much power your wanting to make can cost anywhere from $800 to $1500. but in the end you'll have a bottom end you can count on to not wear out a week or two later. also, is your stock motor capable of handling the kind of power a turbo will put through it? the turbo kit will be easier to do because you can install it without pulling the motor. but id much rather have a 347 than a turbo because when you have fast car all motor, compared to one who is boosted, imo in the mustang world all motor cars are much more appreciated. dont get me wrong a turbo looks sweet and sounds amazing, but any forced induction to me unless your pushing 5-6 lbs of boost is alot on a stock bottom end. besides either way you look at it, youll have to upgrades your heads if you wanna get full power, so in other words build a healthy bottom end, run some nitrous, or all motor, and save up for a turbo at a later date. End of story.

im here all week!! lol.
I am going to respectfully agree to disagree with you. The stock 5.0 motor is a very, very stout performer. In a well taken care of 5.0, the block will fail well before the internals will. Look at my car: Stock bottom end with hyper pistons and 15psi(16-17 winter). The motor has been holding up great for the past year and a half with repeated drag strip abuses. And you mention that a N/A motor is far more appreciated than a turbo motor. Truth be said, I appreciate anyone who takes the time to work on their car. If a boosted 302 beats a N/A 347 would you cry foul and say he is cheating because he is F/I and you are all motor. But the turbo guy could also retort that he is cubically disadvantaged. Chances are, that person put just as much time putting in that turbo, as you did building a 347.
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Old 09-12-2009, 10:29 PM   #20
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The engine's still currently out of the car being put together (ref:avatar) but I'm building a 347 right now and I'm really enjoying it. And as said before, can always turbo it later.
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Old 09-12-2009, 10:29 PM
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