Mattsn2o281 Posted September 30, 2007 Report Share Posted September 30, 2007 Quick question. What is the power limit for a built small block ford, 5.0 block based? It has a girdle, and all forged bottom end, and all arp fasteners, main studs, rod bolts etc. I'm not as worried about the rotating assembly as i am the block, i just got a new toy and am trying to figure out how far i can push it. The motor supposedly makes well north of 500hp at the crank and i had planned on a small nitrous hit on top of that? Pushing it to far? Safe? Thoughts? Matt Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted September 30, 2007 Report Share Posted September 30, 2007 500 at the fly is pushing it in some case's.. but i have personanily put some thru more then that! spray it untill you can see the insides! Quote Link to comment Share on other sites More sharing options...
Mattsn2o281 Posted September 30, 2007 Author Report Share Posted September 30, 2007 Lol. thats what i'm hoping to avoid! Could i switch all the internals out to a stronger block, and if so whats the best to look for? Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted September 30, 2007 Report Share Posted September 30, 2007 well if you can find a B-50 block..it was the best bang for the buck! rated for 800hp @7500rpm.. but now ford is only casting the new boss 302 block. then theres man-o-war blocks and the like! but all those are 1800 and up..where the b-50 block was only 900! Quote Link to comment Share on other sites More sharing options...
Boost-n-Juice Posted September 30, 2007 Report Share Posted September 30, 2007 it's all in your tune. I have been making over 500@wheels for years on a stock roller block based 347, both on spray and boost setups. Quote Link to comment Share on other sites More sharing options...
kirks5oh Posted September 30, 2007 Report Share Posted September 30, 2007 500 at the fly is pushing it in some case's.. but i have personanily put some thru more then that! spray it untill you can see the insides! +1 my set-up is pretty mild, but i've been reading 5.0 and MM&FF for over 10 years religiously, and they tend to advocate no more than 500 for the stock block. the main girdle will help prevent crankwalk, but not strengthen the block a ton. i'm not sure what the b-50 block is, but it might be referring to the 'sportsman' block. i've seen those bare for $750, and they can supposedly handle a bit more power. i would think you'd be pushing it with a h/c/i 347 making around 500 at the crank, and then adding anything more than a 75-100 shot--you'll be pushing it with that alone, unless you go with a 4 bolt block. just a hunch, i have no personal experience with this, just from what i've read. kirk Quote Link to comment Share on other sites More sharing options...
Dave1647545494 Posted September 30, 2007 Report Share Posted September 30, 2007 your already getting into split block territory you'll need an aftermarket block or go 351w based to make more power reliably Quote Link to comment Share on other sites More sharing options...
NTHER91 Posted September 30, 2007 Report Share Posted September 30, 2007 you better be running alot of compression to make 500 crank hp with a heads cam intake 347 you should prolly just shoot for 400 at the crank Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted September 30, 2007 Report Share Posted September 30, 2007 your already getting into split block territory you'll need an aftermarket block or go 351w based to make more power reliably Now later 351 blocks are just as bad. earlyer blocks are much stronger! and the bad thing about N2o on it is, the spike in the Tq curve when you smack the button! that what will spilt the block! but then they do have valley gridles now.i have heard those will help. its not un heard of to put 800 or so thru one of these stock block's. just know you are running on borrowed time! it has alot to do with block prep and tuning! Quote Link to comment Share on other sites More sharing options...
kirks5oh Posted September 30, 2007 Report Share Posted September 30, 2007 if you look in MM&FF ads, i think its DSS that sells stock blocks that are prepped to handle more power. they have level 10 and level 20 blocks, but i forget what's done to each. Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted September 30, 2007 Report Share Posted September 30, 2007 i know level 20 has screw in freeze plugs. cant remember the rest!lol Quote Link to comment Share on other sites More sharing options...
SPLN SUX Posted September 30, 2007 Report Share Posted September 30, 2007 This should be in the TECH section.... Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted September 30, 2007 Report Share Posted September 30, 2007 This is the automotive-related Common Area. This area covers all automotive related topics, anything from that car you saw on the road to the concept car you read about. Quote Link to comment Share on other sites More sharing options...
SPLN SUX Posted September 30, 2007 Report Share Posted September 30, 2007 This is the automotive-related Common Area. This area covers all automotive related topics, anything from that car you saw on the road to the concept car you read about. Do you still have that 350 block... and tell your mom to stop calling me. Quote Link to comment Share on other sites More sharing options...
351mach11647545510 Posted September 30, 2007 Report Share Posted September 30, 2007 i've got an early 351 BOSS block im trying to sell. bare block. Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted September 30, 2007 Report Share Posted September 30, 2007 Do you still have that 350 block... and tell your mom to stop calling me. yes on the block! My mom is long dead. Dont push that issue with me. :asshole: where is your keys? Quote Link to comment Share on other sites More sharing options...
Mattsn2o281 Posted September 30, 2007 Author Report Share Posted September 30, 2007 Thanks, So whats the deal on that boss block? can i swap my internals into it? I just want something that i can count on lasting for quite a while, yet make a decent amount of power. Also, i am guessing that that amount of power is going to murder a t5, so what would you all suggest as far as a transmission? i was looking at liberty to get like a proshifted kit, and also thinking of just swapping to a c4 with a brake. this is all new territory to me as i have never really had a car that made over 450 hp, so any advice would be great. Quote Link to comment Share on other sites More sharing options...
Mattsn2o281 Posted September 30, 2007 Author Report Share Posted September 30, 2007 Oh and the motor is a fully forged, 11.5:1-12:1, built 347, fully ported afr's, fully ported victor jr intake, .680 lift solid roller, fed by a worked holley hp series carb, so i have no doubt that the motor makes killer power. its not your basic h/c/i 347. Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted September 30, 2007 Report Share Posted September 30, 2007 Oh and the motor is a fully forged, 11.5:1-12:1, built 347, fully ported afr's, fully ported victor jr intake, .680 lift solid roller, fed by a worked holley hp series carb, so i have no doubt that the motor makes killer power. its not your basic h/c/i 347. sounds like bobby smith's old motor from his falcon! but his made 586hp on fast racing's dyno, and had the victor jr heads. you can swap in a tremec or t-56. and some places make bullet proof AOD trans for them if tyou still want over drive! I vote T-56 Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted September 30, 2007 Report Share Posted September 30, 2007 but a c-4 with a brake is the way i'd do it. that and youll have room to grow with a stronger motor! Quote Link to comment Share on other sites More sharing options...
Mattsn2o281 Posted October 1, 2007 Author Report Share Posted October 1, 2007 cool, thats what i am leaning toward. where is the best place to pick up a decently priced one? Also, this will be in my 04, not a fox, so i dont know if the weight difference changes anything? And finaly, anyone know where i can find info on swapping a mod motor in a 68 stang? I'm doing a build for the guy i got the engine from and i want to research the subject as much as possible and figure out the best way to do it. Thanks, Matt Quote Link to comment Share on other sites More sharing options...
351mach11647545510 Posted October 1, 2007 Report Share Posted October 1, 2007 the block has been sitting and is going to need to be sent off to the machine shop. I dont know as far as the internals, but it has a boss crank with it that has never been used but i dont know if it can be used on account that it is rusty. Quote Link to comment Share on other sites More sharing options...
Mattsn2o281 Posted October 1, 2007 Author Report Share Posted October 1, 2007 Just curious why this is now in tech? This is just a general discussion on power limits and motor swaps? EDIT: nevermind, just read the sticky under the passing lane, yup, this is tech alright, lol. anyway, 91, let me know what you would be looking to get for that block and crank, if its not alot i may be interested. Gearhead, Boost, and Kirk, if you know of any tricks to setting up a block aside from the above mentioned gridles, let me know, if i have to, and if that boss block wont fit ( ill just drop it in a ranger project if it wont work) i'll just get another 5.0 block and have it setup right. Any idea on that 68 stuff? Quote Link to comment Share on other sites More sharing options...
fattyona12 Posted October 1, 2007 Report Share Posted October 1, 2007 The girdle works on holding the parts in...your gonna split a stock block soon, I know. The boss is the best bang for the buck. It will take all your stock stuff...you might have to machine down the lifter holes some to accept the dog bones though. Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted October 1, 2007 Report Share Posted October 1, 2007 well if aaron can even understand the gold mine he is sitting on. he'll keep sitting on it. and no your crank will not drop into that block! bobby cracked/ broke 7 blocks...including a mexican 289 block! but he wasnt preping them right! IMO main gridle, valley gridle, studs thru out,screw in freeze plugs, and cant think right now on the other stuff! Quote Link to comment Share on other sites More sharing options...
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