[zrchobbies]

Alright. and before you say it. I know I am currently looking on turbomustangs.com. Frankly though some of those guys are a bit s**ty. This is what I have: late model windsor block, nodular cast crank, forged i-beams and Kb forged pistons. pro topline 200cc heads compression at 9.5:1. I am looking to do a twin install in my notch. I hade originally decided nitrou was the route for me and after many months of haggling from a friend he has convinced me otherwise. I would like to get some suggestions from anybody as to what would be a good pair of turbos to make somewhere in the realm of 650 hp. I know thats stressing a stock block quite a bit, but I will be running lower boost pressures until I upgrade to a better shortblock. My main goal no is to get it in and do some tuning and get it close to where it needs to be. This is a street stip application that will see a lot of street use as well as track and will likely be driven to the track.


Thanks

[zrchobbies]

I would like for the boost to come on as low as possible as well. Being a stock block I really don't want to turn in up real high. No more that about 6500

[millhouse]

I'd say twin 60-1's would probably be your best bet. They will easily support your current and most likely your future h/p goals.

[zrchobbies]

thanks

[fastranger347]

two 61mm t4's with a .84 turbine housing with a p trim wheel, im making about 600 with a stockblock 347 and i havent split it yet, so your 351 should be able to make 700+ without issues

[Daggar]

Why twins? Is it just for the kewl factor?

Turbo systems are so much better in the efficiency department these days that I just don't see the benefit from the additional hassle.

[phast69]

Originally Posted by Daggar

Why twins? Is it just for the kewl factor?

Turbo systems are so much better in the efficiency department these days that I just don't see the benefit from the additional hassle.

Agree...I'd just go w/ a large single. Twins means your gonna have more piping, more **** to cool, more **** to break, etc.....

By all means twins look cool but now a days a single can work just as well.

Good luck bro. Whatever route you take...post pics!!!

[millhouse]

The biggest downer with a twin setup is the extra cost of a turbo. Figure on having to spend a good 1/3 to double the amount of the cost for the two turbo's over a single.

Besides that, it's really not that much more to plumb. On a single setup the cold side is far easier to run, while the exhaust side is more complex. A twin setup while having a more complex cold side has a simpler exhaust setup, as you simply run the pipes from the turbo to the h-pipe.

For me it came down to availability of junk yard turbos (turbocoupe turbos seem to be far easier/cheaper to come by), symmetry and just cool factor. Plus there is the extra benefit that for some reason people see a single turbo setup and think…cool!. When those same people come across a twin setup, they shout…holy shi%t and then comes the "gathering".

[Decipha]

this isin't my thread but im in the exact same situation, i have a 92 thunderbird that has recently recieved a 408w stroker, all forged rotating assembly, edelbrock victor jr heads 210cc, edelbrock super victor efi intake, ford f303 cam, 75mm tb, 60lb injectors, msd 6al ignition, msd dizy, etc...

its behind an m5r2 standard trany that doesn't like to shift past 6500 (which is my redline) this engine was built for low end torque and im hoping to get just that,

i was considering twins but now I've decided to go with a single. What turbo would best suit my needs? I'm looking to make full boost as early as possible. CR is at 9:1. I'm guessing its making about 260RWHP nw . I'm hoping to get some where in the neighborhood of 600rwhp. I'm thinking about 18lbs of boost should be about right.

Car is a daily driver that sees about 2k miles a month. Runs off 93 octane.

[turbo23turbo]

Originally Posted by zrchobbies

I would like for the boost to come on as low as possible as well. Being a stock block I really don't want to turn in up real high. No more that about 6500

Stock block windsors Don't like More than 700 hp! I found this out the hard way Walked the crank. with less than 1000 mile on it

Sucks I was running 8psi and pump gas tune

383 with GT-47 88mm 9.80 @137 on radials

Any way A agree on the single turbo set up. Look at my pic to the left what looks cooler than that

[86mustang84]

im using t3/t4 turbos and they both will push more boost then ill ever need

[4tun8]

twin gt35r

[4tun8]

Originally Posted by 86mustang84

im using t3/t4 turbos and they both will push more boost then ill ever need

t3/t4 is a very vague description of a turbo.

[rbonella]

Originally Posted by zrchobbies

Alright. and before you say it. I know I am currently looking on turbomustangs.com. Frankly though some of those guys are a bit s**ty. This is what I have: late model windsor block, nodular cast crank, forged i-beams and Kb forged pistons. pro topline 200cc heads compression at 9.5:1. I am looking to do a twin install in my notch. I hade originally decided nitrou was the route for me and after many months of haggling from a friend he has convinced me otherwise. I would like to get some suggestions from anybody as to what would be a good pair of turbos to make somewhere in the realm of 650 hp. I know thats stressing a stock block quite a bit, but I will be running lower boost pressures until I upgrade to a better shortblock. My main goal no is to get it in and do some tuning and get it close to where it needs to be. This is a street stip application that will see a lot of street use as well as track and will likely be driven to the track.


Thanks

I agree with all the single turbo guys. I have a 1969 block 351 with a single 77. its a ball bearing turbo from turbonetics and with the cubic inches WE have, boost should start building by 2000 rpms easily. I have a 8.5 compression ratio and only 8 lbs of boost (pump gas street car) and I made 605 hp with over 650 torque @ only 5400 rpms. Keep it simple. you have a lot of cubes so make sure you get enough turbo, but not too much or you will have to wait a while for the fun to kick in!

[mrmustangman357]

a 408 with a single 76 mm, with a .96 a/r should put you solidly in 700 hp easily without needing to turn the wick up.

a 70 mm, such as the t-70 from master power, with a .90-.96 a/r can be better for street but might be a bit small on the top end. both would be good choices for a single turbo

[turbogt]

Originally Posted by 4tun8

t3/t4 is a very vague description of a turbo.

I too recommend a single t-76, .96 ar...

you are using the same exhaust gases... A t-76 should actually spool slightly quicker than twin 60-1's....

[4tun8]

Single Garrett gt42r IMO. 1.02 backside.

[Duece Bigalow]

I think it depends on if it's mostly for street use or track? My first turbo car was Twin T-44's stock block 381, 9.26@139 ran out of fuel and not enough cage to run again
http://www.youtube.com/watch?v=cifi2CC4

Then did two T-67's dart block 381
YouTube - Twin T-67 '92 Mustang 1111whp

Fun as hell on the street, hurt the motor before taking it to the track

Then same motor fixed with single 88mm, very boring on the street
YouTube - Single Turbo Fox Body Mustang. First time at the track

If goin single, A smaller like 76mm or 88mm with no smaller than a .96 ar, prolly better with a 1.0 ar exhaust housing wouldn't be to laggy at all.

Twins .81 ar and 60-1's up to t-67's with a 408 would make for a real fast fun street car IMHO!!