[98 cobra]

Well guys Im new to the site, I have a98 cobra with 70k all stock, and I need some advice, heres my ? , Will a gt35r at 9-10 psi put 480+ at the rear tires , here are the specs

t3 4t style , compressor a/r is .70
exhaust a/r is 1.06
its oil and water cooled
its dbb

now for sec ? is can you use shorty headers and run a mid pipe to a single out let? for the turbo up front?

And the final ? is what size wastegate would you use on in

Thanks for the help , Tom

[Black02GT]

i dont know crap about your situation. but a turbo cobra sounds like an incredible idea!

and welcome to the site!

[BizCutt]

Originally Posted by 98 cobra Well guys Im new to the site, I have a98 cobra with 70k all stock, and I need some advice, heres my ? , Will a gt35r at 9-10 psi put 480+ at the rear tires , here are the specs t3 4t style , compressor a/r is .70 exhaust a/r is 1.06 its oil and water cooled its dbb now for sec ? is can you use shorty headers and run a mid pipe to a single out let? for the turbo up front? And the final ? is what size wastegate would you use on in Thanks for the help , Tom

That stock bottom end prolly wont like that for long with 70k on it....but then again ive seen em go forever when they shouldnt....

Good luck with all that exhaust tubing in the tight ace space you have t work with...the longer you have to run them to a single outlet the longer the lag will be...but it should get you there for what your looking to do....

you should be fine with a tial 38 wastegate....

good luck with the build

[ReverendDexter]

The block is definitely strong enough, but were I to go turbo, I'd be looking at replacing the internals with forged units and bumping the compression down under 8.5:1.

Predetonation is bad, mmmmKay?

[98 cobra]

So is the turbo good for the power , also I just want it to last for the summer and then i want to get a mmr block this winter I just want a low 12sec car , also update I have got the turbo tial wastegate(38mm) hks bov , sct xcal , and a aem wideband , and a autometer boost gauge so I have 2k worth of parts and I found so ic piping , an a presion ic, thanks guys for the hel so If I go with 450 will it last?

[ReverendDexter]

Why would you get a new block when you already have one good for 1k hp in the car?

[Goblin]

Originally Posted by BizCutt That stock bottom end prolly wont like that for long with 70k on it....but then again ive seen em go forever when they shouldnt.... Good luck with all that exhaust tubing in the tight ace space you have t work with...the longer you have to run them to a single outlet the longer the lag will be...but it should get you there for what your looking to do.... you should be fine with a tial 38 wastegate.... good luck with the build

Pipe length has very little to do with boost response.

98 Cobra >

The GT35R will be plenty for your goal. I'd suggest getting in touch with a turbo system fabricator to work out your plumbing and head unit placement. A 38mm wastegate will eventually limit the power you can produce, so if you have plans for more than 500rwhp in the future, consider a 44mm wastegate now.

[98 cobra]

my block is the 98 , no its not good for 1k hp, bt ya I was talking witha few guys about the pluming
, also got my tubular kmember , an a-arms

[Goblin]

The 98 block is actually good for more than 1000hp. With the proper machine work, the Teksid blocks have successfully supported 2000+hp. Your block is nearly bullet proof. It will get the job done, i promise.

[ReverendDexter]

Originally Posted by 98 cobra my block is the 98 , no its not good for 1k hp, bt ya I was talking witha few guys about the pluming , also got my tubular kmember , an a-arms

The 98 block is fine, as Goblin said. You just need to upgrade the reciprocating assembly with forged peices.

Buying a shortblock you'll probably actually end up with a weaker block than you started with, it'll just be rated for more hp because of the internals.

[BizCutt]

Originally Posted by Goblin Pipe length has very little to do with boost response. 98 Cobra > The GT35R will be plenty for your goal. I'd suggest getting in touch with a turbo system fabricator to work out your plumbing and head unit placement. A 38mm wastegate will eventually limit the power you can produce, so if you have plans for more than 500rwhp in the future, consider a 44mm wastegate now.

38's limit you at 500? wow mine made 697 on pump gas... and does tubing not effect lag time??? if it s a straight quarter milecar with a 2 step id say ok...but a street car??? hmmmmm

[98 cobra]

This is my street car I want to leave engine stock for now bt I want to get 450 at the rear tires for the summer is it doable , also is the sct going to do what I need
thanks tom

[weems]

Originally Posted by 98 cobra This is my street car I want to leave engine stock for now bt I want to get 450 at the rear tires for the summer is it doable , also is the sct going to do what I need thanks tom

Yes, but you will have to take it to a reputable tuner. And without forging your internals, your car is going to be a ticking time bomb.

[98 cobra]

so these cobra are not very good engine that sucks. I want to pull low 12s do able on stock internals

[rk_2000_Z/28]

You don't need a turbo system or 450 rwhp to hit low 12's in a streetable Cobra.

[03 R Code]

You don't need 450 hp to pull low 12's. So low 12's are easily done with an internally stock engine, bolt on's and good drag suspension. Maybe a little weight reduction, which you have already started with that tubular k member and a arms kit.

[98 cobra]

so what does it take , alredy got alot of the turbo parts and I want to boost it

[03 R Code]

Like I said, a good drag suspension, some weight reduction and bolt on's. Something close to 300rwhp and a lighter weight car will make it into the low 12's.

A good example, there is a bolt on only Mach on the registry that, with lots of weight reduction and a GREAT drag suspension, is running 11.1x's. His engine is internally completely stock and I think he is dyno'ed around or a little over 300rwhp. You don't want low 11's so your car doesn't need to be as extreme as his is in the weight reduction and suspension categories.

You could have a low 12 sec car and then save your money and to the turbo and engine build at the same time.

[ReverendDexter]

Originally Posted by 98 cobra so these cobra are not very good engine that sucks.

[98 cobra]

like I said I love boost never had a boosted v8 before , bt I had a low 13 sec zx2 I built and a stage 3 srt 4 that was a quick car bt I want a cobra so I got one bt it needs more power , so I f I boost can it hit 11s on stock irs with some slicks , also what gears would you get for boost