Turbo guys with aftermarket engine blocks

kratos2250 · March 24th, 2011, 12:26 PM

Just wondering what blocks you turbo guys are running. I'm about to start my build and I want to do it right. I really want to run more than 10lbs of boost also.

SloMo · March 24th, 2011, 12:31 PM

I've been thinking of a DSS block, either them or Dart.

fogged306 · March 24th, 2011, 01:24 PM

DSS blocks are just prepped stock production blocks. Dart is the way to go IMO. The boss block is nice, but you cant run a 3.4" stroke and not worry about piston rock. Unless you're talking about a 9.5 deck. Then either would be fine. Just stay away from those Chinese knockoff blocks all over eBay and racingjunk. They're copies of dart blocks, but made with much weaker metal and casting comparable to pro-comp.

SloMo · March 24th, 2011, 01:56 PM

Didn't know that about DSS, I thought they were a stronger block. Looks like I'll be spending my money on Dart when the time comes.

horsepowerjunkie · March 24th, 2011, 02:03 PM

I'm putting togather a new Ford Racing BOSS Block 331, that I plan on running in upwards of 18 pounds of turbo boost.

Dart Blocks have got crazy expensive latley!

SloMo · March 24th, 2011, 02:17 PM

Yeah, priced $1,900 for a block. That is high, but if you build it right once and it's money well spent.

69fastback · March 24th, 2011, 02:32 PM

If you're building a serious turbo motor it's Dart /thread

justin146 · March 24th, 2011, 02:43 PM

Is this for a 5.0? You can run more than 10psi- I was running 12psi with gt40p heads with no issues. With E7 heads, you can probably run 15psi and be in the safe zone. Its all in the tune though. I'd be more worried about pistons/rods than the block.

Throw in a junkyard 302, make 500whp. If it blows, throw in another junkyard engine. There is a guy at The Turbo Forums that made right at 650whp with a bone stock Explorer Gt40p longblock.

nxcoupe · March 24th, 2011, 03:23 PM

I vote Dart SHP block. No need for the iron eagle unless you are thinking 1000+. I made 600 rwhp with a 347 in a stock block and 12 psi. I had to cut timing out and limited it to 5300 rpm's. It would have made considerably more power with more timing and higher rpm's but the stock block would have come apart. It was girdled and was great the two years or more I drove it. I pulled everything out and sold it off, the engine is n/a in a guys car and running strong still.
I would not recommend a stock block unless you don't mind changing them out every so often. I was just trying it to see if it would last. I would not do it again.

Dap1991 · March 24th, 2011, 03:30 PM

Originally Posted by justin146

Is this for a 5.0? You can run more than 10psi- I was running 12psi with gt40p heads with no issues. With E7 heads, you can probably run 15psi and be in the safe zone. Its all in the tune though. I'd be more worried about pistons/rods than the block.

.

do you know what you were making at 12psi?

justin146 · March 24th, 2011, 03:49 PM

Originally Posted by Dap1991

do you know what you were making at 12psi?

~420whp through an automatic with the limiter at 5300RPM.

This was just 7psi in a 4700lb truck on 20's...

http://s150.photobucket.com/albums/s...t=IM000094.mp4

69fastback · March 24th, 2011, 04:04 PM

he was making that power with a junk set of heads. If you build this engine with good parts, you can exceed a stock 302s limit N/A. If your going to boost a built engine with an 8.2 deck block, you're on borrowed time with a stock block.

gripthenboost · March 24th, 2011, 04:29 PM

Well if its a track car your going with i would go with the dart block. But honestly if its your street car, buy a junk yard 302 build it with pistons to get the compression were u can run damn near 20 psi and be safe, the usual forged rods,and gurddle for the bottom end and morros oil pickup and all additional parts. By the time you send it all to the machine shop to be balanced a blue printed you should come in just a little shy of $2,500. As long as you have the fuel and the tune theres nothing to hold you back from making at least 500hp, This is with out your cam, heads, and intake combo.

SloMo · March 24th, 2011, 05:07 PM

Originally Posted by justin146

I'd be more worried about pistons/rods than the block.

Why should he be worried about the piston/rods? If he's pre '93, '92 and earlier have forged pistons, and I read a few places forged rods. Whether the rods are forged or not, the factory internals will surpass what the stock block can support.

fogged306 · March 24th, 2011, 05:21 PM

Originally Posted by SloMo

Why should he be worried about the piston/rods? If he's pre '93, '92 and earlier have forged pistons, and I read a few places forged rods. Whether the rods are forged or not, the factory internals will surpass what the stock block can support.

Yep. It's cap chatter you need to be concerned with on these 2 bolt blocks. Thin main webbing, 50oz balance, and power or RPM's or both, will kill the block itself.

kratos2250 · March 24th, 2011, 09:01 PM

So a dart block (shp) 347 internals. Trick flow top end kit with 185's and a nice lil turbo sounds really good to me. Where should I buy the 347 internals at?

justin146 · March 24th, 2011, 09:06 PM

Originally Posted by SloMo

Why should he be worried about the piston/rods? If he's pre '93, '92 and earlier have forged pistons, and I read a few places forged rods. Whether the rods are forged or not, the factory internals will surpass what the stock block can support.

Because i was talking about the tune. I have personally seen a '92 burn a hole in a piston and take out two rods at ~350whp because of a bad tune.

SloMo · March 24th, 2011, 10:41 PM

Oh ok, you made it sound like the internals were weak. You could ruin ANY motor with a bad tune.

March 24th, 2011, 12:26 PM	#1
kratos2250 Regular Join Date: Feb 2007 Posts: 135 iTrader: 0 reviews	Turbo guys with aftermarket engine blocks Just wondering what blocks you turbo guys are running. I'm about to start my build and I want to do it right. I really want to run more than 10lbs of boost also. __________________ 2003 Black Cobra. 2.3 whipple JLT RAI Dragon t/b 60s BAP Mafia Xcal3 MAC LTs w/ORX-pipe Borla stingers Billetflow IRS brace Eibach springs 1989 GT AFM b-31 cam crane springs 6.3 pushrods elec. W/P/fan 3:73s Manual steering tri-ax Shorties-orh-flows

March 24th, 2011, 02:03 PM	#5
horsepowerjunkie Hardcore Enthusiast 1989 Black LX---Turbo Join Date: Jun 2010 Location: just outside Minot, ND Posts: 1,153 iTrader: 0 reviews	I'm putting togather a new Ford Racing BOSS Block 331, that I plan on running in upwards of 18 pounds of turbo boost. Dart Blocks have got crazy expensive latley! __________________ 89 LX Black, Boss 331, C4,T76BB, FAST EFI 82 Capri RS,89 5.0 HO,Comp XE266,TW 170,T5,etc. 73 Dart Sport 340, 410ci Bracket Brawler 72 Demon 340 4-speed 1 of 1667 01 Ram Quad Cab 03 Grizzley 660

March 24th, 2011, 02:17 PM	#6
SloMo Regular 1992 Mustang Lx 5.0 347ci 11.8@115 Join Date: Jan 2011 Location: Mississippi Gulf Coast Posts: 269 iTrader: 0 reviews	Yeah, priced $1,900 for a block. That is high, but if you build it right once and it's money well spent. __________________ Slow Motion... Quick reving, High compression, Big Boy 347 stroker... STROKER MOTION...

March 24th, 2011, 02:32 PM	#7
69fastback Premium Member 1969 Mustang Mach 1 6.824@101.61 Join Date: Aug 2006 Location: Oklahoma jackass, get to driving Posts: 5,565 iTrader: 0 reviews	If you're building a serious turbo motor it's Dart /thread __________________ ./___ _ ____ ___ \. ( ]]] _ _ O _ _ [[[ ) \_ o _ _____ _ o _/ \|___\| ......... \|___\| http://www.youtube.com/watch?v=HyYU3...e_gdata_player

March 24th, 2011, 02:43 PM	#8
justin146 Regular 1999 Cobra Vert Join Date: Aug 2010 Location: Missississississippi Posts: 403 iTrader: 1 reviews	Is this for a 5.0? You can run more than 10psi- I was running 12psi with gt40p heads with no issues. With E7 heads, you can probably run 15psi and be in the safe zone. Its all in the tune though. I'd be more worried about pistons/rods than the block. Throw in a junkyard 302, make 500whp. If it blows, throw in another junkyard engine. There is a guy at The Turbo Forums that made right at 650whp with a bone stock Explorer Gt40p longblock. __________________ 2001 BMW 540i M-sport 6 speed, staggered type 66 wheels, m5 shifter, muffler delete. Replaced my Cobra as my track car...

March 24th, 2011, 12:31 PM	#2
SloMo Regular 1992 Mustang Lx 5.0 347ci 11.8@115 Join Date: Jan 2011 Location: Mississippi Gulf Coast Posts: 269 iTrader: 0 reviews	I've been thinking of a DSS block, either them or Dart.

March 24th, 2011, 01:24 PM	#3
fogged306 MM Fanatic 89 GT Join Date: Apr 2007 Location: NY Posts: 4,875 iTrader: 2 reviews	DSS blocks are just prepped stock production blocks. Dart is the way to go IMO. The boss block is nice, but you cant run a 3.4" stroke and not worry about piston rock. Unless you're talking about a 9.5 deck. Then either would be fine. Just stay away from those Chinese knockoff blocks all over eBay and racingjunk. They're copies of dart blocks, but made with much weaker metal and casting comparable to pro-comp.

March 24th, 2011, 01:56 PM	#4
SloMo Regular 1992 Mustang Lx 5.0 347ci 11.8@115 Join Date: Jan 2011 Location: Mississippi Gulf Coast Posts: 269 iTrader: 0 reviews	Didn't know that about DSS, I thought they were a stronger block. Looks like I'll be spending my money on Dart when the time comes.

March 24th, 2011, 03:23 PM	#9
nxcoupe Regular Join Date: Mar 2011 Location: Dayton, Ohio Posts: 181 iTrader: 0 reviews	I vote Dart SHP block. No need for the iron eagle unless you are thinking 1000+. I made 600 rwhp with a 347 in a stock block and 12 psi. I had to cut timing out and limited it to 5300 rpm's. It would have made considerably more power with more timing and higher rpm's but the stock block would have come apart. It was girdled and was great the two years or more I drove it. I pulled everything out and sold it off, the engine is n/a in a guys car and running strong still. I would not recommend a stock block unless you don't mind changing them out every so often. I was just trying it to see if it would last. I would not do it again. __________________ 90 GT 393 5 spd, 467 rwhp 480 rwtq 92 coupe, R/S 308 5 spd 93 coupe, 2.3 5 spd

March 24th, 2011, 04:04 PM	#12
69fastback Premium Member 1969 Mustang Mach 1 6.824@101.61 Join Date: Aug 2006 Location: Oklahoma jackass, get to driving Posts: 5,565 iTrader: 0 reviews	he was making that power with a junk set of heads. If you build this engine with good parts, you can exceed a stock 302s limit N/A. If your going to boost a built engine with an 8.2 deck block, you're on borrowed time with a stock block. __________________ ./___ _ ____ ___ \. ( ]]] _ _ O _ _ [[[ ) \_ o _ _____ _ o _/ \|___\| ......... \|___\| http://www.youtube.com/watch?v=HyYU3...e_gdata_player

March 24th, 2011, 04:29 PM	#13
gripthenboost Hardcore Enthusiast 91 Mustang GT 1991 sliver GT Join Date: Apr 2010 Location: New York Posts: 1,213 iTrader: 0 reviews	Well if its a track car your going with i would go with the dart block. But honestly if its your street car, buy a junk yard 302 build it with pistons to get the compression were u can run damn near 20 psi and be safe, the usual forged rods,and gurddle for the bottom end and morros oil pickup and all additional parts. By the time you send it all to the machine shop to be balanced a blue printed you should come in just a little shy of $2,500. As long as you have the fuel and the tune theres nothing to hold you back from making at least 500hp, This is with out your cam, heads, and intake combo. __________________

March 24th, 2011, 09:01 PM	#16
kratos2250 Regular Join Date: Feb 2007 Posts: 135 iTrader: 0 reviews	So a dart block (shp) 347 internals. Trick flow top end kit with 185's and a nice lil turbo sounds really good to me. Where should I buy the 347 internals at? __________________ 2003 Black Cobra. 2.3 whipple JLT RAI Dragon t/b 60s BAP Mafia Xcal3 MAC LTs w/ORX-pipe Borla stingers Billetflow IRS brace Eibach springs 1989 GT AFM b-31 cam crane springs 6.3 pushrods elec. W/P/fan 3:73s Manual steering tri-ax Shorties-orh-flows

March 24th, 2011, 10:41 PM	#18
SloMo Regular 1992 Mustang Lx 5.0 347ci 11.8@115 Join Date: Jan 2011 Location: Mississippi Gulf Coast Posts: 269 iTrader: 0 reviews	Oh ok, you made it sound like the internals were weak. You could ruin ANY motor with a bad tune. __________________ Slow Motion... Quick reving, High compression, Big Boy 347 stroker... STROKER MOTION...

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