ABeasst

iTrader: (5)

Well I cracked a sleeve in my 383 so I have decided I'm going to step up to a iron 408. I'm also considering selling the Hi-flo turbo kit with the T76GTS and making a truck/corvette manifold twin turbo setup. I'm going to re-use my rods/crank and get new pistons. I'm looking to push 1000RWHP through a M6 with the potential to make 1100.

What brand pistons should I use? Mahle, Diamond, and Wiseco are the ones I'm thinking about.

What size turbos? Possibly twin TC66 or GT40s?

What are my hot-parts w/ T76GTS worth?

Thanks

CALL911

iTrader: (17)

I have Diamond pistons in mine and have had great success. If all you care about is RWHP and don't care for how it actually drives on the street, I'd just reccomend staying with a 383 and making it completly bullet proof and then going with a very high boost making Turbo that is capable of 25+#'s of boost. The larger motor will be harder to run more boost, and is more likely to give you more torque than HP.

ABeasst

iTrader: (5)

I wanna run 9s in the 1/4 thats my ultimate goal. I'm switching to an iron block for strength and since I couldn't find a LS1/LS6 block for any less than an iron so I might as well go with the 408 since I'm building my turbo kit around my motor not the other way around.

CALL911

iTrader: (17)

If what you want is to run in the 9's, I know guys with the 347 and 18#'s of boost on a D1 with only 650 RWHP that can do that. Then it gets into how the car is setup suspension wise and what not. You don't need 1000 RWHP to get there.

Now, if you want 9's and 1000 RWHP, then you could probably do both pretty easy with a large Turbo setup on your 408, but I am just telling you that you don't need the cubes to get there as it is more cost effective to make the power with more boost rather than more cubes.

hellbents10

iTrader: (10)

The 76 gts would get you into the 9's. If you are going to choose between 40's and tc66's I would go with the tc66's with .68 hot sides for 1100hp or .81's to make more.

ABeasst

iTrader: (5)

I'm open to other turbo suggestions for a twin setup those are just the 2 I had checked in to that would fit my requirements. Which were small packaging and power potential.

52172

iTrader: (2)

beasst did you get some detonation or what happened do you think? Sucks you have to rebuild so soon!! I wouldn't be able to afford a rebuild if mine were to go. Best of luck either way though bud.

WeberRacingEquipment

iTrader: (4)

We primarily use Wiseco pistons. A shelf Wiseco would have no problem in the power range you are looking to make. I would however recommend upgrading to a tool steel wrist pin.

What happened to your old motor that you cracked a sleeve?

Photochop

iTrader: (74)

I recently picked up a Hi Flo kit with the PT76GTS, with a custom grind cam and waterpump included and paid $4200 for it FWIW.

I agree with the previous post, if you set your car up right you can hit 9s with the 76GTS no problem.

MY99TAWS6

iTrader: (3)

The aps twin kit is nice and should give you around 850rwhp no problem on a 408 size engine. Its a very complete kit and good deal if Peter has any left at 5500 freight in. It had great manifolds,nice intercooler,every nut and bolt. Not sure how much past 850rwhp it can do was thinking of going with bit of spray on top of mine for quicker spool and a bit more rwhp. This kit should hit full boost I am betting by low 3000 on a 408.

Reject

iTrader: (24)

where are you and how much for the turbo?

ABeasst

iTrader: (5)

I had a small hose clamp get into my intake and into the cylinder causing the sleeve to crack. Definitely wasnt a fun day, oh well.

Right now I dont wanna split up the turbo and hotparts, but if that changes I'll let you know.