twin 5.0

[Hypsi87]

Well Im starting the begining stages of planning this out. I currently have a Buick Grand National and I love the performance of a turbo car. But I also love driving a fivespeed car. I have two TE-44 turbochargers sittin in my grage so im thinkin of a comletly built 5.0 twin turbo five speed car . wadua think?? I'm figuring on a complete rebuild with forged pistons and Steel crank ect. etc. I've noticed that alot of forced inducted 5.0 don't run real hight boost (at least what I have seen). So im planning on dropping the compression to 8.0:1 and spraying alky. If my buick can handle 24PSI on pump gas with no knock then why can't a 5.0 handle 20-24 PSI. If anyone has any questions or consernes or advise (as since I am walking into this blindly.) any help would be appericated.

Thanks

Andy

[BigDanTheMan]

I have a general question - i was told that a single turbo is often better then a twin set up. I was told this was because a single set up is more efficient to spool up then twins - but if this is true then why would anyone go for a twin set up?

[audi&benz]

If he is putting two turbos in the 5.0, he shouldnt have any problem spooling them up. The large displacement of the 5.0 will help spool the turbos faster than some small 4 or 6 cylinder.

Good luck and post those pics as soon as you do it.

[Chrisv006]

Originally Posted by BigDanTheMan

I have a general question - i was told that a single turbo is often better then a twin set up. I was told this was because a single set up is more efficient to spool up then twins - but if this is true then why would anyone go for a twin set up?

Well, in an engine of that size, single or twin should not matter as much as it would in say an RX-7.....But in a car like that, its easier to spool two small turbos than one big turbo....Nothing lags like a single turbo wankle....


-Chris

[gizzmoe]

I think that would be a really fast stang. I see that ur from IL and was just wondering if you live anywhere near naperville. If you do have you ever gone down to 75th street and rout 59? I was just wondering this because I have seen a black Grand Nation there before.

[Hypsi87]

No I live down in peoria but I think I know whoes gn your talking about. my buddy lives up there and if it is the same one then that is a low 10 sec. street car. (in other words don't mess with it.) . Im up there about once a month around that area. mabye we could get together and run em . just kiddin.

[boosted331]

Originally Posted by Hypsi87

Well Im starting the begining stages of planning this out. I currently have a Buick Grand National and I love the performance of a turbo car. But I also love driving a fivespeed car. I have two TE-44 turbochargers sittin in my grage so im thinkin of a comletly built 5.0 twin turbo five speed car . wadua think?? I'm figuring on a complete rebuild with forged pistons and Steel crank ect. etc. I've noticed that alot of forced inducted 5.0 don't run real hight boost (at least what I have seen). So im planning on dropping the compression to 8.0:1 and spraying alky. If my buick can handle 24PSI on pump gas with no knock then why can't a 5.0 handle 20-24 PSI. If anyone has any questions or consernes or advise (as since I am walking into this blindly.) any help would be appericated.

Thanks

Andy

You really need to do a lot more reading before you dive into something. For starters the stock 5.0 block is gonzo after 500 RWHP, you're gonna need to dish out around 1500 for an R302 or dart block, or an A4 if you can still find one. 20-24 psi on TE44's, might want to re-think your plan. A pair of TE44's on a decently built motor with good heads + intake would be maxed out before they hit 24 psi, you would be hard pressed to hit 20. If you want to run 24 pounds of boost from a pair of turbos or a turbo on the street, look into something bigger like some 66's or even bigger. At that point you're going to be making too much power for any clutch or standard trans to handle, and if you want to do any kind of hard driving at all you're going to need to put a big drag radial or an E/T street under it, and even then it will roast the tires doing 100.

[HiFlow5 0]

Originally Posted by Hypsi87

No I live down in peoria but I think I know whoes gn your talking about. my buddy lives up there and if it is the same one then that is a low 10 sec. street car. (in other words don't mess with it.) . Im up there about once a month around that area. mabye we could get together and run em . just kiddin.

Peoria huh? A big city in the middle corn, lol. I was there over the summer, drove 2 hours through corn fields till we hit the city. Nice place!

[stang_racer20]

peoria ha, sounds familiar. is that anywhere near wauconda or fox lake?

[GTStang]

I was never good at Geography

[DavidovSpeedWRC]

Out of curiosity, how would a single turbo setup happen on a "V" engine?
I would assume a twin-turbo V8 would have one turbo on each manifold. Then where would a single turbo be placed to allow balance in the flow?

Also Hypsi87: What kind of HP numbers are you putting down on 20-24 PSI??

[SkylineUSA]

Here is how.

I don't have time right now, but I would only go to 18psi with those turbos, and boost your comprssion up to 8.5-8.75.

Like what was mention your block will fail. I am going with a 351W, the stocks block I have seen handle over 650 pretty easly, anf they are a lot cheaper, and have more cubes than the others that were mentioned.

[Chrisv006]

When/If you add a FMIC there is going to be like 5 miles of piping hehe...with a twin setup, I think it could be made to have a goodbit less piping....

-chris

[SkylineUSA]

Its a V8, piping what piping?

As long as you have a reasonable amount of compression it will be fine for the street, its all in the way you build the engine. How you want the power band to hit.

You can always use a VORTECH Aftercooler.

[SkylineUSA]

I am a novice when it comes to this stuff. Go to www.turbomustangs.com/forums these guys live turbo stangs day and night. I get a lot of good info from them.