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 p***. 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 ****ter 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 repe***ively 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 **** 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 **** 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 ***embly 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 **** 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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