So say I want to run a NOS or Turbo set up... later in life.. on my stang... Now i have heard that there isn't a point in rebuilding a stock block 302 because it will still have a weak block even with forged internals (true? or no?) so unless you go with a dart block, you might as well swap to a 351? I have the money now to replace the engine.. would a fully built 302 not hold up to 10psi and 500rwhp? (or be really likely to crack) even if it was a machined block? is it really worth it to go with a 351? (money is tight, i couldnt replace the 302 block for a while if it cracked) and before some 1 gets mad at me for not searching, i did, but I am not asking which is better, i'm just asking if its really needed for what i want.. because not switching would save me alot of time and a little money... thanks..
im knew to this but when i talked to top pros about doin that with my 302, they all said it wont handle it. and if it does it wont handle it for a long time. a few hundred miles. then need a rebuild. i was told to go with a at least a 351 but was a 393 seems to last a longer amount of time and handle the power
I would like to know this as well. I thought about the same thing and either way i am going to put all forged internals, but I wonder how much the 351 block can handle since its almost the same as the 302 that can only handle ~500hp.
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1993 GT Hatch: 306 with Twisted Wedge heads,TFS stage one cam,TFS upper/lower intake, 190lph fuel pump, 30lb injectors, 70mm TB/EGR plate, Granatelli MAF= now using Pro-M, Lakewood upper/lower control arms, powertrax diff, subframe connectors, Eibach springs, aluminum ds, t56 trans, Eibach swaybars, Flowtech LT's, Magnaflow CB, 17x10.5 deep dish cobras in rear, 17x9 cobras in front.
Marine Detachment, Keesler AFB, Biloxi MS
OOORAAHH!!!
lol, ONLY 500hp. i love mustang guys. go ahead and put your 480 hp 302 block in. youll be satisfied lol. it wont crack. just dont rev it flippin sky high and youll be fine. thats a crap load of power for a small car.
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1965 Mustang Coupe Project: 1965 Mustang Inline 6 (For Now) Coupe, New Floors, New Quarters | Ford 9 Inch Rear, 11" Rear Disc Brakes, 3.50:1 Gears | Control Freak Front U/L Control Arms, Global West Adj. Strut Rods | KYB Gas-A-Justs, Grab-A-Trak 620 Coils & Mid-Eye 5-Leafs | Global West Tubular Subframe Connectors | Addco 1-1/8 Front Swaybar Kit
lol, ONLY 500hp. i love mustang guys. go ahead and put your 480 hp 302 block in. youll be satisfied lol. it wont crack. just dont rev it flippin sky high and youll be fine. thats a crap load of power for a small car.
Ha ha . I didnt mean that like 500hp isnt a lot. Its just that in the future I want to go with a twin turbo setup and i would rather be able to use the turbos to their full potential. Not neccessarily all the time on the street, but I would use an in-car boost controller so i can tunr the boost down on the street and I would be able to turn it up when Im at the track and not worry about my motor falling apart. But at the same time its not going to be an all out race car and be running like 700hp all the time.... so I dont want to have to spend almost 3 grand for a Dart block if I can just use a 351 and do the same thing and spend between 3-4 grand on an entire shortblock.
So back to Soccerpimp's question... Anyone know how much power a 351 block can handle? I heard it was about 700HP on another site but that was the only place I have seen any kind of power rating on the block and I dont know how reliable that info is.
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1993 GT Hatch: 306 with Twisted Wedge heads,TFS stage one cam,TFS upper/lower intake, 190lph fuel pump, 30lb injectors, 70mm TB/EGR plate, Granatelli MAF= now using Pro-M, Lakewood upper/lower control arms, powertrax diff, subframe connectors, Eibach springs, aluminum ds, t56 trans, Eibach swaybars, Flowtech LT's, Magnaflow CB, 17x10.5 deep dish cobras in rear, 17x9 cobras in front.
Marine Detachment, Keesler AFB, Biloxi MS
OOORAAHH!!!
Ok, well I talked to DSS Racing on their level 20 351 block which goes for $1025. And they told me it can pretty much take 700hp easily with their main support system($299.95).
Here is the info straight from their site:
"Level 20 CNC blocks: The STRONGEST production block on the market! The Level 20 CNC block provides the ultimate in power and strength. The blocks go through numerous CNC blueprinting operations including threaded oil galley plugs, screw-in freeze plugs (just like the Boss 302 blocks for stronger reinforced sides), and a thread-in rear oil crossover plug. The bores are CNC 60° offset chamfered to improve airflow and make more power. A trued oil pan rail (302 blocks) and CNC stroker clearancing provide the ultimate in do-it-yourself stroker engine assembly."
It is a FORD block. Not an aftermarket like Dart or anything.
I think this is what I am going to go with.
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1993 GT Hatch: 306 with Twisted Wedge heads,TFS stage one cam,TFS upper/lower intake, 190lph fuel pump, 30lb injectors, 70mm TB/EGR plate, Granatelli MAF= now using Pro-M, Lakewood upper/lower control arms, powertrax diff, subframe connectors, Eibach springs, aluminum ds, t56 trans, Eibach swaybars, Flowtech LT's, Magnaflow CB, 17x10.5 deep dish cobras in rear, 17x9 cobras in front.
Marine Detachment, Keesler AFB, Biloxi MS
OOORAAHH!!!
so if its a ford block... how is it any stronger than any other ford block? by milling it all away? im no engine expert, but i seem to have myself under the impression that some of the racing motor companies are making a killing by selling a service that doesnt necessarily need to be done. but i could be wrong.
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1965 Mustang Coupe Project: 1965 Mustang Inline 6 (For Now) Coupe, New Floors, New Quarters | Ford 9 Inch Rear, 11" Rear Disc Brakes, 3.50:1 Gears | Control Freak Front U/L Control Arms, Global West Adj. Strut Rods | KYB Gas-A-Justs, Grab-A-Trak 620 Coils & Mid-Eye 5-Leafs | Global West Tubular Subframe Connectors | Addco 1-1/8 Front Swaybar Kit
No, its not saying that its stronger because of the machining or anything. The Ford 351 block can handle up to 700HP just like the 302 can handle up to 500HP. Its just the main support and screw in freeze plugs make it a little more sturdy so it can withstand a more constant 700hp. And I been searching around and Summit sells 351 blocks for $500 and then you still have to pay truck freight and everything and its still not machined or anything. So it will probably cost you about $650 for the block (unless you buy a used block, but then you would have to pay extra at the machine shop to magnaflux it and everything) and the shipping, then you still have to bring it to a machine shop. i would rather pay the ~$1100 for a block that is all machined and ready to go by a reputable company. And the clearancing is a plus for me because when i build my new motor it will be a stroker and I wont have to worry about the crank or rods hitting the block.
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1993 GT Hatch: 306 with Twisted Wedge heads,TFS stage one cam,TFS upper/lower intake, 190lph fuel pump, 30lb injectors, 70mm TB/EGR plate, Granatelli MAF= now using Pro-M, Lakewood upper/lower control arms, powertrax diff, subframe connectors, Eibach springs, aluminum ds, t56 trans, Eibach swaybars, Flowtech LT's, Magnaflow CB, 17x10.5 deep dish cobras in rear, 17x9 cobras in front.
Marine Detachment, Keesler AFB, Biloxi MS
OOORAAHH!!!
Stock Block or 351? 
now using Pro-M, Lakewood upper/lower control arms, powertrax diff, subframe connectors, Eibach springs, aluminum ds, t56 trans, Eibach swaybars, Flowtech LT's, Magnaflow CB, 17x10.5 deep dish cobras in rear, 17x9 cobras in front.
. I didnt mean that like 500hp isnt a lot. Its just that in the future I want to go with a twin turbo setup and i would rather be able to use the turbos to their full potential. Not neccessarily all the time on the street, but I would use an in-car boost controller so i can tunr the boost down on the street and I would be able to turn it up when Im at the track and not worry about my motor falling apart. But at the same time its not going to be an all out race car and be running like 700hp all the time.... so I dont want to have to spend almost 3 grand for a Dart block if I can just use a 351 and do the same thing and spend between 3-4 grand on an entire shortblock.
