Question:What is the best year Block to start with as a platform and heads to build a 427 SBF or would it just be better to order a new block.Just a street Car not trying to burn up a track somewhere.Thanks
427 FE is a big block. However, stroker kits are now available to take a small block 351 out to 427. I hear they are pretty tedious, finicky. Sorry, I don't know what yr blocks are best.
What stroke? If you are building a 4.25 stroke in an OE block I'd only start with a F4TE factory roller cam bock (mid 93 and up). And using any factory production head will be waste of time. With the 4.25 stroke crank you may need a small journal camshaft depending on the rods used. If you did a FRPP 351 Boss block you can run a 4.125" bore x 4.000" stroke for 427 inches. Any aftermarket head with 2.08/1.60 valve package would work well. I'd run Trick Flow or AFR if it were me. And I'd 210+cc intake port volume castings.
I'd say because it's a sbf and you could pack that displacement under the hood of a Falcon and dress it down to look somewhat traditional so you'd have a killer sleeper. But that's just a guess. Go with a 347 kit thought imo. Cheaper and probably faster.
bunch of info on these on the mustang and ford forums. some say use 69-74 blocks if I remember correctly ford had 2 deck heights. dart makes a block for around 1800 $. you will have to do a good bit of clearance work on the stock block .the one I worked on even had to do a minor clearance on the oil pan.
Let me think,the guy is asking a question about building a engine,this is a message board and he's not asking about putting dubs on a 74 Chevy. So I would think it's a legit Hamb friendly question. HRP
Watch the deck height if you plan on putting it in a Falcon. The 351 is quite a bit wider than the 289/302.
tjm73 I thought about that but at a 4.125 do you think She would run hot on the street small town and not much traffic but still that's a big bore and Thanks to the rest of you and Anthony I will check that again Thanks its a starting place and Barstowpo I have already removed the shock towers
I believe to the best of my knowledge you should have an aftermarket 351w block to safely and reliably run a 427 cubic inch Windsor, and yeah if it was about a small block chevy or a PackardV8 im sure it would be fine to post on the hamb
This^^^^. I would bet that you can buy one cheaper than build one. I know it's cool to do it yourself but.....someone who has built a few could save you a lot of headaches. Why not check with Goatroper on here? He is a wealth of engine info.
Thanks cooling was one of my main fears I don't want to spend that much money on my Falcon and then only drive Her when the weather is cool and I live in Texas I really do appreciate it.You can make good HP out of a SBF not everything has to have a SBC in it but that's another story
The new 302 BOSS and 351W BOSS blocks are totally streetable. All you need is a proper cooling system. For what it's worth my brother built a truly sick 418W in a F4TE block. It's only 9 cubic inches smaller. IN the Ranger he put it in it ran a 11:57 on it's first pass. 11:17 without using the transbrake. Tore up two C4's before destroying the thrust bearing. If you made 1.25hp per cubic inch the difference is a scant 11 hp. For the extra cost I'd do a 418W. Because having the "427" will cost you a fair bit more money.
The best block to use is a 351 W out of a mid 90's 3/4 ton or 1 ton Truck, I have yet to scatter one, and they are plentyfull. In order to get that much stroke you will have to notch the bottom of the cylinder walls otherwise the rods will hit. I also recommend I beam rods for longevity. Also a windage tray or a dry sump oil system is pretty much the norm. Its what I always run. For a street rod I would go 406....427 is a lot of stroke for a daily driver. I never had any cooling problems with a stroked engine. Normaly if it does run hot, it needs more fuel.
4.03 bore x 4.00 stroke will get a nice 408. 525hp is petty easy target to hit in this combo with w repetitively mild cam and 10:1 compression. Hello pump gas. It's not a HAMB kind of magazine by the 408 these guys built is pretty stout and streetable. It peeks at 530 hp and 534 Ft-lbs. But the gold star goes to the torque curve and hp curve. How's 500+ ft-lbs from 3400-5400 rpm sound? That torque curve is sumo wrestler fat. http://www.musclemustangfastfords.com/tech/mmfp_1111_408_stroker_build_and_dyno_test_double_trouble/
Any factory block is strong enough for streetable power levels. You can get the cubes a variety of ways, 4.00 bore and 4 1/4" stroke isn't the best way. Some earlier blocks will take a 4.125" bore but check first. Another way is to use a 4.1" stroke which is a commonly available aftermarket size, Eagle and Scat make them, with a 4.06" bore it makes a little less than 427 but close enough.
I spent a lot of money on the rear Currie 9" 31 spine trutrack 389 gear and coil overs 4 link disc brakes so it looks like my weak link now is the 4sd.I just got Her back from the fab shop today.What about 351 blocks from mid 70s I already have one of those but now I have been hearing bad things about that block that was one of the reasons I ask this question
You physically cant got that big of an overbore on a standard production ford block. Largest overbore you can safely go on a 351w based block is .060 over, and even then you will risk overheating issues with the thin walls. You'll need to drop your pants and go with a dart based block. Are you really looking to make 800+ hp? Or do you just like the sound of the displacement number? A well built 408 will make plenty of horsepower and is WAY cheaper to put together.
No Sir I'm not looking for no 800HP no where near that and your right I don't want to go 60 over been down that road a 408 would be fine and I work in a Prison so I think I will keep my pants up but dig a little deeper in them and I really do Thank You.Sure would like to see that 64 Galaxie with the 390 in Her
Lots of strange info here on this subject for some reason. A 427 CI windsor is commonly built using a 4.170" stroke crankshaft with a 4.030 bore block. Boring a stock windsor block to 4.125 is a NO-NO. ANY factory block will need major machine work normally to accommodate that much stroke. A 4.100 stroke crank is easier and will result in 418 CI at 4.030. A 4" stroke 408 is the best all around build. The longer stroke setups can have rod to crank counterweight interference if not mocked up properly.
You can get 418" with only a minor notch at the bottom of the cylinders.The deck height problem is a non-issue unless you don't plan on having the block deck squared and prepped.I have used an 80s block and a 94 block on my 418" 351W builds.DO NOT go more than +.030 unless you have the block sonic checked! An aftermarket 4.125 bore block does not run hot,it was made that way,not an over bore!My Comet currently runs 10.30s with a mild 418"W at 3200lbs,out of the box with no tuning it went 10.60s!I used a forged SCAT crank,6.200" Chevy style rods,and Forged KB pistons,out of the box Edelbrock heads,solid roller cam and Edelbrock/Glidden intake and 1050 Dominator.No assembly issues,just quality machine work.A friend runs a 65 Falcon Ranchero with 427"W,Dart block,AFR heads,pump gas friendly,full street runner,uses an AOD and 4:11 gears,NO heating issues ROY.
I really do not think that a block from a 3/4 ton truck from the 90's is any "better" than any other. The 69-70,s have a 9.480 deck height and are plenty strong.
It sure would have been nice to have seen that 65 Comet but I sure Thank You for the Info.I think one point that 65 Comet was making is the Engine is only as good as the machine work and I think that's true that's where you need to spend some money.No matter how much money you spend you start off with shit and you will end up with the same THANKS
www.rpmmachine.com/ford-351w-434-stroker.shtml‎ I was incorrect the stoker motor we installed was a 434 based on a oe ford block here is a link on internals
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