Stock Block?

Phantom5oh · 01-09-2003, 05:55 PM

Im in the works of building a supercharged 347, but I can't quite decide on what block to go with. Is the B50 Sportsman block overkill? Will the stock block hold up with ARP Studs a girdle and windage tray? Keep in mind this is a street motor so it probably wouldn't rev it past 6K

XR1stang · 01-09-2003, 05:59 PM

how much horsepower you planning on putting through it?

The b50 block is beefier and will hold up over time better than a stock block will. If you are going 347 and supercharged then I wouldn't recommend you skimp on the block and go ahead and get the b50.

XR1stang

VeNuM · 01-09-2003, 07:04 PM

Stock block isn't the best way to go, but definately the cheapest. It's rated at around 450 hp n/a. It will work on street applications though! Problem is people get carried with adding horsepower. If you plan on going with juice or forced induction at least the Sportsman block is a must. The Sportsman block has more webbing in the main cap area but the area where it lacks is in the lifter valley. I've seen 3 blocks crack right down the lifter valley and that's what scares me about a stock block. The other 2 blocks that are out there are the R302 and the Dart. The R302 is MUCH stronger and has lots of horsepower handling capability. The Dart block is the best much more expensive. It has 5 4 bolts mains opposed to the R302's inner 3 only. I almost bought a R302 block for my 331 stroker that would see a 150 shot but decided on upgrading to the stock 351 block which is stronger and can handle more. Just a couple words of advice. ~Brian

Phantom5oh · 01-10-2003, 09:08 AM

I'm not sure how much power I plan on making. I plan on using AFR 185 heads and an Eagle stroker kit, but thats about all I know right now.

A decent 347 setup is capable of 400 HP, then toss even 6 psi at it and your well over 450, so I guess the beefier block is a must!

I've seen B50 blocks for around $1,000. How much do the R302 and Dart blocks cost? Cost will be a factor in building this combo, but I don't want to get stuck having to rebuild it because I skimped on parts. Do it once the first time and make sure it't right!

302 LX Eric · 01-10-2003, 09:59 AM

Quote:

Originally posted by Phantom5oh
How much do the R302 and Dart blocks cost? Cost will be a factor in building this combo, but I don't want to get stuck having to rebuild it because I skimped on parts. Do it once the first time and make sure it't right!

Unfortunately, for most of us, cost is always a factor.

The R302 can be had for $1600 - bare. From what I've heard it needs lots of machining to prep it. Dart, I forget, but they're expensive too.

Good luck,
E

XR1stang · 01-10-2003, 11:15 AM

call up the folks at Raceparts II and see what they are running the b50 for now. I got mine for $800 from them, I think it was like $950 shipped. I don't have a number handy though, but they are out of Charlotte North Carolina.

R302s are more expensive at around $1500 or so. Darts I have seen ranging from about $1300-1800 but I don't have a reliable dealer on them that I know of.

[EDIT]

All of those blocks are going to need some level of machining though. The R blocks more so than the b50's from what I have seen.

[/EDIT]

XR1stang

Phantom5oh · 01-10-2003, 12:20 PM

I can get all the machine work done for almost free, or at least have the shop at my disposal. So thats not a problem, just the initial cost of the block.

Raceparts 2 wants $900 for the block and $150 to ship it to Boston. Is there some kind of deal if your a returning customer?

XR1stang · 01-10-2003, 01:22 PM

I don't know that they are offering any deals to returning customers. I bought the first b50 block from them when they first came out, so prices probably have changed a little.

Still $900 isn't too bad.

Also I if this is going to be a street/strip stang you might consider the b50 more than the r302. I know a few people that have them in street cars that do have some cooling issues.

XR1stang

Phantom5oh · 01-10-2003, 02:19 PM

Sounds like I will probably go with the B50. Thanks for the help.

chris91LX · 01-10-2003, 02:51 PM

I wouldn't build any kind of a stroker motor I was going to put a power adder on with a stock block. Your going to be pushing close to 400rwhp or more with a good combo n/a. Even N/A your real close to the stock blocks limit IMO. The B-50 is probably a decent choice, but I've heard it's way overpriced for what you get. If you can find a Mexican block it's supposed to be about the same strength as the B-50 and you can usually find them for less $$. Good luck with the build.

Phantom5oh · 01-12-2003, 09:39 AM

Any idea where I can find a mexican block? Is that something I would have to find in a bone yard? Another thing I was wondering is does the B50 block accept all the accessories as the stock A50 block? Or do I need special mounting brackets?

Coupe50h · 01-12-2003, 04:37 PM

I talked to a guy at the track who was running a stock 133k block, and 10 lbs of vortech, he went 10.40's and said the block has also seen several bottles of 100 shot of nos before the blower, some people have better luck than others, this guy does'nt drive daily, but has had good luck with the stock block, how much longer it will last, i dunno.
some people will blow em up after a couple passes, others can make them last, with a stock block it's a time bomb imo.

01-09-2003, 05:55 PM	#1
Phantom5oh Registered Member Join Date: Mar 2000 Location: Boston, MA Posts: 334	Stock Block? Im in the works of building a supercharged 347, but I can't quite decide on what block to go with. Is the B50 Sportsman block overkill? Will the stock block hold up with ARP Studs a girdle and windage tray? Keep in mind this is a street motor so it probably wouldn't rev it past 6K __________________ 95 GTS 03 DR 650SE Sgarzi's Machine Works

01-09-2003, 05:59 PM	#2
XR1stang Registered Member Join Date: Apr 1999 Location: San Francisco, CA Posts: 205	how much horsepower you planning on putting through it? The b50 block is beefier and will hold up over time better than a stock block will. If you are going 347 and supercharged then I wouldn't recommend you skimp on the block and go ahead and get the b50. XR1stang __________________ I used to hate computers, until the server went down on me...

01-09-2003, 07:04 PM	#3
VeNuM Registered Member Join Date: Apr 2002 Location: Downers Grove, IL Posts: 464	Stock block isn't the best way to go, but definately the cheapest. It's rated at around 450 hp n/a. It will work on street applications though! Problem is people get carried with adding horsepower. If you plan on going with juice or forced induction at least the Sportsman block is a must. The Sportsman block has more webbing in the main cap area but the area where it lacks is in the lifter valley. I've seen 3 blocks crack right down the lifter valley and that's what scares me about a stock block. The other 2 blocks that are out there are the R302 and the Dart. The R302 is MUCH stronger and has lots of horsepower handling capability. The Dart block is the best much more expensive. It has 5 4 bolts mains opposed to the R302's inner 3 only. I almost bought a R302 block for my 331 stroker that would see a 150 shot but decided on upgrading to the stock 351 block which is stronger and can handle more. Just a couple words of advice. ~Brian __________________ 1989 Black Mustang GT Hatchback, Underdrive Pulles, Electric Fan, Cold Air Intake, Headers, Offroad H-Pipe, Magnaflow catback, Steeda Tri-Ax, Fluidyne Aluminum Radiator, Timing at 14*, 3.73's Coming not so soon: 408w Ricer Hater's Club Member #59

01-10-2003, 09:08 AM	#4
Phantom5oh Registered Member Join Date: Mar 2000 Location: Boston, MA Posts: 334	I'm not sure how much power I plan on making. I plan on using AFR 185 heads and an Eagle stroker kit, but thats about all I know right now. A decent 347 setup is capable of 400 HP, then toss even 6 psi at it and your well over 450, so I guess the beefier block is a must! I've seen B50 blocks for around $1,000. How much do the R302 and Dart blocks cost? Cost will be a factor in building this combo, but I don't want to get stuck having to rebuild it because I skimped on parts. Do it once the first time and make sure it't right! __________________ 95 GTS 03 DR 650SE Sgarzi's Machine Works

01-10-2003, 11:15 AM	#6
XR1stang Registered Member Join Date: Apr 1999 Location: San Francisco, CA Posts: 205	call up the folks at Raceparts II and see what they are running the b50 for now. I got mine for $800 from them, I think it was like $950 shipped. I don't have a number handy though, but they are out of Charlotte North Carolina. R302s are more expensive at around $1500 or so. Darts I have seen ranging from about $1300-1800 but I don't have a reliable dealer on them that I know of. [EDIT] All of those blocks are going to need some level of machining though. The R blocks more so than the b50's from what I have seen. [/EDIT] XR1stang __________________ I used to hate computers, until the server went down on me... Last edited by XR1stang; 01-10-2003 at 11:21 AM..

01-10-2003, 12:20 PM	#7
Phantom5oh Registered Member Join Date: Mar 2000 Location: Boston, MA Posts: 334	I can get all the machine work done for almost free, or at least have the shop at my disposal. So thats not a problem, just the initial cost of the block. Raceparts 2 wants $900 for the block and $150 to ship it to Boston. Is there some kind of deal if your a returning customer? __________________ 95 GTS 03 DR 650SE Sgarzi's Machine Works Last edited by Phantom5oh; 01-10-2003 at 12:30 PM..

01-10-2003, 01:22 PM	#8
XR1stang Registered Member Join Date: Apr 1999 Location: San Francisco, CA Posts: 205	I don't know that they are offering any deals to returning customers. I bought the first b50 block from them when they first came out, so prices probably have changed a little. Still $900 isn't too bad. Also I if this is going to be a street/strip stang you might consider the b50 more than the r302. I know a few people that have them in street cars that do have some cooling issues. XR1stang __________________ I used to hate computers, until the server went down on me...

01-10-2003, 02:19 PM	#9
Phantom5oh Registered Member Join Date: Mar 2000 Location: Boston, MA Posts: 334	Sounds like I will probably go with the B50. Thanks for the help. __________________ 95 GTS 03 DR 650SE Sgarzi's Machine Works

01-10-2003, 02:51 PM	#10
chris91LX Registered Member Join Date: Oct 1998 Location: Suburban Chicago, Hanover Park Posts: 695	I wouldn't build any kind of a stroker motor I was going to put a power adder on with a stock block. Your going to be pushing close to 400rwhp or more with a good combo n/a. Even N/A your real close to the stock blocks limit IMO. The B-50 is probably a decent choice, but I've heard it's way overpriced for what you get. If you can find a Mexican block it's supposed to be about the same strength as the B-50 and you can usually find them for less $$. Good luck with the build. __________________ My Ford Club http://www.midwestfords.org/ Best time N/A 12.9 @ 107 1.711 60' 125 shot - 12.04 @ 113 1.59 60'

01-12-2003, 09:39 AM	#11
Phantom5oh Registered Member Join Date: Mar 2000 Location: Boston, MA Posts: 334	Any idea where I can find a mexican block? Is that something I would have to find in a bone yard? Another thing I was wondering is does the B50 block accept all the accessories as the stock A50 block? Or do I need special mounting brackets? __________________ 95 GTS 03 DR 650SE Sgarzi's Machine Works

01-12-2003, 04:37 PM	#12
Coupe50h Registered Member Join Date: Aug 2002 Location: SanAntonio, Tx Posts: 957	I talked to a guy at the track who was running a stock 133k block, and 10 lbs of vortech, he went 10.40's and said the block has also seen several bottles of 100 shot of nos before the blower, some people have better luck than others, this guy does'nt drive daily, but has had good luck with the stock block, how much longer it will last, i dunno. some people will blow em up after a couple passes, others can make them last, with a stock block it's a time bomb imo. __________________ X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's. race weight 3,160 12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear 13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear

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