Is there a Block that can hold more HP than the stock 5.0L out there?
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Old April 16th, 2008, 03:21 AM   #1
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Is there a Block that can hold more HP than the stock 5.0L out there?


I was woundering if there was any cars out there that had as stronger block than the stock 5.0's- B/c they can only hold up to 500 ( give or take some ) And i didnt wanna have to buy a new Hight Pro. Block and spend all that money if i didnt have to. So i was woundering if there was ever any blocks out there made by ford that held more than 500+ HP with no prob. What type of car and years was it?
See i was just thinking that i want just a little more HP flexibily than 500HP and figured if any of you knew of a block that was stronger that i could maybe get at a junk yard that can hold more HP and wouldnt kill me in price. Then i could just use that and bore it out/ clean it up ( obviously so i can be sure to get good compression ) I planned on having to bore it out. I think i want to do a 347 Stroker Kit.
So if there is any block out there that is smaller than that ( so that i can still bore it out/ clean it up ) and will support more HP, and work/fit in my car, i was hoping you guys could tell me of some. Unless you know of some cheap slightly improved pro. capable short blocks out there. But let me know what you all think, thanks for any advice. And as always its much appreciated, thanks! - The Novice.
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Old April 16th, 2008, 03:28 AM   #2
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the 351 will hold 700 from what i hear.. if you are going to daily drive this car 500 is alot of hp but yes the 351 is the alternitive
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Old April 16th, 2008, 03:41 AM   #3
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No def. not a DD. I live in MI so ill bearly get to drive it anyways...crummy weather. Anywho 351W eh, what cars and years did those come in, if you happen to know. Also i would have to prob bore it out like i was saying, to make sure its all clean and good to go. I dont the "est. Guideline" to how much your suppose to Bore over to "clean it up" But do they make Stokers bigger than 351? b/c if its a 351 and i have to bore it out whats a good number and/or will the block wall be too thin if i do that, i still want to be safe and not have to worry about cracking it by having too big of cylinders and too thin of wall you know?
Also i dont think that Fordstoker.com site makes any Stroker kits over a 351+. Know any who might and are trustworth and affordable? Thanks for all your help! - The Novice.
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Old April 16th, 2008, 03:44 AM   #4
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where in michigan do u live?
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Old April 16th, 2008, 03:49 AM   #5
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Grand Rapids Area, a little North.
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Old April 16th, 2008, 04:46 AM   #6
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Michigan FTW

Mackinaw here
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Old April 16th, 2008, 08:13 AM   #7
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.030 over is, in my opinion, the place you want to be when you clean up the walls. If it's just normay wear and tear, .030 will be fine and you will still have good wall thickness when you're done.

If you do a 351, definitely do a stroker kit.
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Old April 16th, 2008, 08:44 AM   #8
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Originally Posted by fogged306 View Post
.030 over is, in my opinion, the place you want to be when you clean up the walls. If it's just normay wear and tear, .030 will be fine and you will still have good wall thickness when you're done.

If you do a 351, definitely do a stroker kit.

If you do a 351 without a stroker, might as well just use a 302.
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Old April 16th, 2008, 08:48 AM   #9
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Well i Def. want to Stroke it, And i just want the comfort of being able to have more HP with out having to worry about the block cracking. So do they make any Stroker kits for a 351+ 30 0ver somewhere along those lines? Any links by chance?
Most importantly where can i find a 351W block? What year cars had them in them that i might be able to find at a JunkYard or something? Thanks guys!
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Old April 16th, 2008, 08:50 AM   #10
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Id just bore and stroke a 302 to 347. Well thats what im doing anyways, less weight, better weight distribution, not as much stress to the chassis. Brakes better. No cost to swap it (besides the stroker kit).
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Old April 16th, 2008, 09:08 AM   #11
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351Ws come in everything. Older 302 blocks (pre roller) handle more horsepower than the roller blocks do. Roller blocks usually can only go .030 before the cylinder walls get thin. Early blocks can go .060 and most 351W blocks at .060 are thicker than a stock 5 liter that hasn't been bored. Main webbing on th earlier 302 and 351W blocks is alot beefier as well. The main webbing is where the problems start on the roller 302 blocks. They crack right up the middle starting at the main webbing.
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Old April 16th, 2008, 10:54 AM   #12
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Should i be worried?


Originally Posted by 1BADSTANG View Post
Id just bore and stroke a 302 to 347. Well thats what im doing anyways, less weight, better weight distribution, not as much stress to the chassis. Brakes better. No cost to swap it (besides the stroker kit).
Well the thing is i dont have a Block at all. So thats why i was considering it. I Looked at fordstrokers.com and was thinking of maybe the 393 stroker kit.
Any ideas Anyone?
Your right though 1badstang, will getting a 351W and making a 393 be alot more stress on my Chassis? I have welded frame connectors, but he brings up a good point, will it be too much for the chassis? Or will i be ok? Also is a 393 stroker a good idea? Any Advice anyone? Also how much HP will this make? Thanks guys, much appreciated! - The Novice.
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Old April 16th, 2008, 11:51 AM   #13
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talk to woody, he'll hook you up
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Old April 16th, 2008, 11:51 AM   #14
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Originally Posted by The Novice View Post
Well the thing is i dont have a Block at all. So thats why i was considering it. I Looked at fordstrokers.com and was thinking of maybe the 393 stroker kit.
Any ideas Anyone?
Your right though 1badstang, will getting a 351W and making a 393 be alot more stress on my Chassis? I have welded frame connectors, but he brings up a good point, will it be too much for the chassis? Or will i be ok? Also is a 393 stroker a good idea? Any Advice anyone? Also how much HP will this make? Thanks guys, much appreciated! - The Novice.
No man you would be fine, your just loosing handling and brake power. Like i said, i am keeping what was suppose to be in the car, in the car. Plus the computer problems..
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Old April 16th, 2008, 12:21 PM   #15
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Originally Posted by 1BADSTANG View Post
No man you would be fine, your just loosing handling and brake power. Like i said, i am keeping what was suppose to be in the car, in the car. Plus the computer problems..
There will be computer issues if i go that big?
Wont there be a computer prob with a 347? or no b/c its close enough to the original size?
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Old April 16th, 2008, 12:38 PM   #16
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Or does anyone know if them made 302 blocks start are stronger than the 5.0L ones from 87-93? Something that can hold alittle more HP, and how much more, what car years? I could just do that and bore it out to a 347.
Any thoughts or helpful info on that? Thanks.
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Old April 16th, 2008, 01:03 PM   #17
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Either way 351 based or 302 based stroker you'll probably want a tune.

I'd go with a 408, 351 based block myself. With aluminum heads, they weigh almost exactly the same as a 302 with iron heads...so don't be concerned with weight. At the most you are talking an extra 50 lbs up front, which can be easily offset with fiberglass hood or by removing the sway bar or by replacing the K-member or by a number of other means.

The 351 based stroker is much more capable (700 hp vs 500 hp), a very easy swap, and cheaper than an aftermarket 302 based block. Plus you automatically produce an extra 50-100 hp from the added 61 cubic inches (408 vs 347).
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Old April 16th, 2008, 01:11 PM   #18
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here u have a block now....

351 Winsor with C6 trans
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Old April 16th, 2008, 01:13 PM   #19
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u live in a place where there are proly more older ford parts than anywhere in the world.....
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Old April 16th, 2008, 01:42 PM   #20
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Heh ok thanks, just woundering though, if you happen to know is there a way i can know for sure by looking at if it its really a Windsor Block or not?
For Example- How the GT-40P heads have "GTP" stamped on them.
Is there anything like that?
Also so if i do end up doing a 393 or a 408 with EFI, The computer will be ok, it wont go crazy? But ill just need to get a good tune or maybe a dyno? Just dont want to do it if the computer is gunna cause headaches non-stop.
Thanks guys for all your help, you guys have helped me a lot! Thanks guys! -The Novice.
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