[EscortSportage]

i understand the stock 5.0 block is on the weak side ie 500hp or less
ive heard once your around 500 or greater you can crack it like an egg...anyways

i want to run turbo on my stang and for now ive been building up the chassis and the suspension and drivetrain but id like to turbo it and run low boost 5 to 7 psi and make around 450hp would this be practical/safe with a stock block,

im running MSD wire,TFI coil, MSD 6AL box, CAI, headers back exhuast soon 255lph fuel pump and adjustable fuel pressure reg and im going to tune and tweak the shit out of the stock engine, i also want to get an electric fan and water pump to free up some ponies... i want to make around 300hp all motor with stock motor, hit it with a 75shot of NOS but id really want to turbo it! what do u think? should i wait and get a stronger block and getter internals?

[93hatch]

drive your car at 400hp, if its not enough get a better block

[teal89]

Originally Posted by 93hatch drive your car at 400hp, if its not enough get a better block

+1, if you already know it's not gonna be enough, start craiglisting a 351 like I did. I'm almost done with mine

[stangage]

if you know for sure you want to go over 500hp may as well get an aftermarket block they are a bit on the pricey side but iam sure it would be better than guessing after you did all that work

[teal89]

Originally Posted by stangage if you know for sure you want to go over 500hp may as well get an aftermarket block they are a bit on the pricey side but iam sure it would be better than guessing after you did all that work

He is right, but at the same time if you can find an earlier production block on craigslist then do it. I picked mine up from craigslist for $300 bucks. It's 40 over, Keith Black Pistons and a 565 cam so I got luckly. I turned it over and torqued the bolts down to the right specs and its great. All I need is a flywheel, balancer and 750 carb and pushrods and it's good to go. My tally on it now is only around $530 and no, this is not a junkyard builder eithier, it's all about researching and patience, you'll find your parts cheaper price.

So pick up an earlier production block, break it down and craigslist for your parts and ebay if you have too. My build should yeild around $600.00 total drop in.

[JBIGBOOTSY]

I have a 351 roller block with main caps, for sale. just taken appart, still needs to be sent out to the mech shop.

[teal89]

Originally Posted by JBIGBOOTSY I have a 351 roller block with main caps, for sale. just taken appart, still needs to be sent out to the mech shop.

^ If I were you, I would give him a call and talk about his block. It's a roller block too so you have a head start. No need to get retrofit shit and get the actual roller cam and lifters and boom. If I had not already got my motor from craigslist, his would have been sold.

Matter of fact, do you have any 351w parts for sale?

[EscortSportage]

ok i dont want to runa 351 i want a 302! all the way with lots of boost, but for now with the stock block ill run low boost, id like to run a dart 2 iron block or a boss 302 block and do a complete rebuild with afr heads and the works 700+ hp on like 15+ psi of boost

[86_Notch]

there's no replacement for displacement

[83fox]

id go with the new boss 302 block if your dead set on a 302 based motor. with the ability to bore it over it 4.125, how can you go wrong?

but id rather have a 408 boosted stroker over a boosted 347 anyday. if you wanted to stroke it that is

[teal89]

Yeah you can make a 351 block 700hp and still have play room and then stick your boost on it. But if you're set on using 302 then the Dart block is the way to go. But see here's the loop hole. You want that 700hp and you want to spend over 1,300 for the 302 block alone. You can make 700hp safely with a 351 bored .40 over and stroked with 60cc chambered heads and even you're boost for well under 1k. So why look for the horsepower by spending more money when you can get something cheaper and build something just as strong and still acheive your hp rating and still have room. Now I have watches some nhra ihra snap some dart blocks and also seen some very powerful 1000hp "stock" production blocks out perform the aftermarket blocks.

Well you have a choice put it that way

[stangage]

ya i have seen that to but iam not gonna gamble all of my new mods and work on hope that my stock block will stay together, i just ordered a dart block iam builtin a 347 i just done want to have to worry about it everytime i go run it at the track

[EscortSportage]

look i just want to boost my stock engine for now, for a concept setup like an experiment and run like 7psi of boost, will running the stock intake mani,heads and cam be practical?

[teal89]

Originally Posted by EscortSportage look i just want to boost my stock engine for now, for a concept setup like an experiment and run like 7psi of boost, will running the stock intake mani,heads and cam be practical?

You will be fine and matter of fact, that couldn't be any better if you want to boost only 7psi. Your gonna have to back timing off some but don't consider it a "concept". It's been done hundreds of times. You'll be safe with 7psi and you can run more like 8-9psi if you changethe head gaskets to something on a performance level.

[88stangGT]

im a turbo mustang enthuasist also.. have a bone stock 89 gt im gunna boost throught it... if you go on turbomustangs.com you will see people running stock blocks can handle 12-14 lbs with a correct tune.. if your running stock computer with just timing and fpr as ur tuning no more then 10lbs.. me im gunna run 8lbs with a t70 .68.. should make close to 400 and be able to get probaly a 11.8 slip out of it...

[teal89]

Originally Posted by 88stangGT im a turbo mustang enthuasist also.. have a bone stock 89 gt im gunna boost throught it... if you go on turbomustangs.com you will see people running stock blocks can handle 12-14 lbs with a correct tune.. if your running stock computer with just timing and fpr as ur tuning no more then 10lbs.. me im gunna run 8lbs with a t70 .68.. should make close to 400 and be able to get probaly a 11.8 slip out of it...

Imma have to give props because if you're running 400hp which in turn you having at least 390 torque, you should be walking with a 10.7 - 10.8 slip, you're gonna have accelleration from hell when you launch so give yourself more LOL.... Freakin 11.8 are you kidding me ;-)

[lite_em_up]

Originally Posted by EscortSportage ok i dont want to runa 351 i want a 302! all the way with lots of boost, but for now with the stock block ill run low boost, id like to run a dart 2 iron block or a boss 302 block and do a complete rebuild with afr heads and the works 700+ hp on like 15+ psi of boost

Buy a dart small block then... way more durable

[teal89]

Originally Posted by lite_em_up Buy a dart small block then... way more durable

I beleive that part of the conversation was over a long while ago. Plus that was mentioned by himself that he already wanted a Dart block. Just catching you up, no harm.

[lite_em_up]

yeah I got irritated in reading the thread... I noticed after I posted thanks though... I too have had some problems with the 5.0 and power capabilities... we managed a little over 550 for about 7 passes in the eighth before running a rod through the side of a block... So we bought a Dart block... If you want it small Dart is the way to go... best advice for a dart block though, if you are gonna spend the money to buy the block dont slack on building the bottom end... it would suck to have a cheap bottom end breaking a very non-cheap block

[teal89]

Originally Posted by lite_em_up yeah I got irritated in reading the thread... I noticed after I posted thanks though... I too have had some problems with the 5.0 and power capabilities... we managed a little over 550 for about 7 passes in the eighth before running a rod through the side of a block... So we bought a Dart block... If you want it small Dart is the way to go... best advice for a dart block though, if you are gonna spend the money to buy the block dont slack on building the bottom end... it would suck to have a cheap bottom end breaking a very non-cheap block

That's as close as meeting a poor, rich man. Or Bill Gates moving to porn ethics. He's right, you paid for an expensive block, mind as well finish up with quality parts and that also includes not cheap bagging with oil... Get synthetic. I'll be using 15w-30 from Rotella