On a 2.3, how would the spool and topend be with these combos? Would the gt30 and the bigger .83 backside make comparable power to the 35r with the smaller backside? Or are they still apples to oranges?

 

On pump gas they are very similar on race gas the differences are larger, I would estimate a 40 whp difference on pump and about a 80whp difference on race gas. If this is a street car run the 3076 if its drag/strip oriented run the 35R.

Scorke

 

with a 3076r 2.3 .82 back housing, it would make a killer Street car. With a 35r same combo... carzy top end monster.

 

Its gonna be a daily driver raced about twice a month at the strip runnin on alky.

 

Well what sort of driving do you enjoy most, if you have a thing for lateral g's and like the idea of tourqe(I shift mine at about 2800 rpms when putting around on the streets and it's already starting to pull) I would go for the 3076, to me it is a great great great "in-between" a stocker and a 35R, however if you live for top speed shenanigans, or highway run's go with the 35R, to me, the powerband/potential of a 35R is tooo much. It is almost like you are just adding speed and power in a place where it can very rarely be utilized while you can really make use of the 3076's earlier spool on the street. An aggressive tune on a 3076 and alky+2.3 should make close to 500whp and about 450 ft lbs of tq I would assume, which would be quiteeeeeee fun.

Scorke

 

I made those numbers on a stock 2.0l w/ 50 trim. I would expect at minium another 50whp and maybe the same torque with a 2.3 and 3076.

Just for comparison

 

Now, on my 2.3 with headwork, and revolver cams, I spool ridiculously soon and i do like that feelin a lot. But I'm trying to combat the feeling of drop off up top. Still on the stock turbo now and its just choking for air. Is it a big difference between the 30 with the .83 and the 35r with the .63 up top? I know the .83 would allow for better exhaust flow up top but would the 35r really choke that much with the .63? I'm lookin to rev to 8500 max.

 

i have 8200RPM max. go with the GT35R just incase you wanna grow dont have to pay twice for the job

 

^ You do not have to pay twice, just a couple hundred bucks considering you sell the 3076 for what its worth then move up to the 35R.

To the thread starter, go with a .82 3076 which will be middle ground between the small 3076 and the gt35R.

ExViTermini- there is no way a 3076 will make 50 more hp on pump, maybe on c16 on the ragged edge of the engine's ability at 30-32 psi you could make 550 on a 2.3 3076, but I would think thats a wee bit of a stretch. What boost did you run on your pump gas run?

Scorke

 

You may however end up paying twice for the engine by repeatedly spinning the long stroke motor that hard.

 

Is it really gonna be that much more strain? would an 8200 rpm limit like sharkbites be way better?

 

1 other quick question, whats the stock crank good for? I know the stock bottom end is supposed to be good till above 500hp but aren't the rods what usually fail? Whats the crank supposed to be good for being it that its a forged piece?

 

No, Ted B does not like to rev stroker motors. He will reccomend a 7500 rpm limit or so. I didn't believe that it was truely optimal to shift that much below your rev limit then he gave me his shift point calculator to work out the absolute best time/rpm threshold to shift at, for my car which is a 3076'd 2.3 the best rpm to shift at was 7900 then lower depending on the gears. Because of the hp/tq curves of a 2.3l you are best off in terms of performance, and longevity to shift well before 8500, and a lil before 8200, I would reccomend 8 grand for only when you really really want to (IMHO when you just want to beat the **** out of your car and have no regard about it's well being-so in other words, don't do it). If you can get a ride in a bigger turbod 2.3l car and judge for yourself, I can say that even when I drive it fast now I shift wayyyyy before my rev limit, on a road course I was shifting at 6800 or so with full boost before 4k, thats still a meaty powerband.

Scorke

 

I wouldnt worry about the crank, I havent seen any pics/reports of busted ones on the forums, and people have/were making much much more power then you intend on.

Scorke

 

and dont forget about paying for tunning also