408 + ?Boost? for 600 - 700 rwhp
Thread Starter
TECH Fanatic
iTrader: (15)
Joined: Nov 2005
Posts: 1,889
Likes: 0
From: Alexandria, LA
408 + ?Boost? for 600 - 700 rwhp Building a high boost motor and i would like to have twins for the faster spool but i think the 408 would help with the low end ive been reading alot people using a T76 behind the 408 and having good luck. This is going to be in a truck and i dont that makes any difference. Plans with motor are LS2 block bored .030 and Callies Compstar rotating assembly with mahle pistons with -32cc dish and 317's with 2.08/1.60 with around a 68-72cc chamber all on pump gas 93 octane would the T76 be effiecent for the HP goal i want of 600-700rwhp. i would be happy anywhere between those numbers
http://www.forcedinductions.com/product3.htm
heres a big selection of turbos. look into the T6 S-trim turbos u should have plenty of room for a big down pipe in a truck for more of a race set up
heres a big selection of turbos. look into the T6 S-trim turbos u should have plenty of room for a big down pipe in a truck for more of a race set up
Trending Topics
Thread Starter
TECH Fanatic
iTrader: (15)
Joined: Nov 2005
Posts: 1,889
Likes: 0
From: Alexandria, LA
Im thinking the PT76GTS would be the better one of the 76 family. Now keep in mind it'll be intercooled with maybe a 4" downpipe and 2.5" cold pipe and im not certain on the hotpiping. Longtube headers will be on it so this will be a rear mount. Cam is probably going to be a 232/236 .60x/.61x 115 or current TSP 228R. I have room for all big components like large FMIC and Piping
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
You don't need twins for early spool on that setup.We've done a 408ci with a S85 Turbo which spools very quickly and hit's your HP gaol while only pushing 8lbs in a truck.
Edit-just saw the rearmount. Got me,not a fan of rear mounts.
Edit-just saw the rearmount. Got me,not a fan of rear mounts.
I would stick with manifolds instead of long tubes. I've been reading on the boards that manifolds work better with the rear mount setups. Might ask around though for clarifiation.
Yeah the S85 will easily make stupid amounts of power.
On a rear mount I would go ST80 if you want big power.....or more then the 76mm will offer.
Thread Starter
TECH Fanatic
iTrader: (15)
Joined: Nov 2005
Posts: 1,889
Likes: 0
From: Alexandria, LA
anymore input for this?????
how about front mounting a 76GTS or PT88, maybe a S85 if i can find it at a good price (which i would rather)!!!!!! I think ive decided on a front mount, now just nailing in the turbo for the motor and the size of piping
how about front mounting a 76GTS or PT88, maybe a S85 if i can find it at a good price (which i would rather)!!!!!! I think ive decided on a front mount, now just nailing in the turbo for the motor and the size of piping
Staging Lane
Joined: Jan 2008
Posts: 76
Likes: 0
From: Boston
What kind of performance do you expect from it?.....hp@ rpm?......What do you want?....
The gt45 from the people I spoke to are pretty pleased with it.....Now do you want int/ext wastegate?.....The higher the a/r the better the top end power,,,But comes in later on the powerband.....The lower a/r spools quick but starves.......IS this a street vehicle?Actually for that hp you wont need a t76.....Unlees you want more hp down the line......If your going twins 2 gt45 will more than feed that amount of hp u desire....
http://cgi.ebay.com/ebaymotors/GT45-...em370020763664
Actually Ive had real deals and knockoff's......The only problem Ive seen with the knockoffs is that they need to be balanced....Other than that they are an exact copy of the original some time just a reman as well......
The gt45 from the people I spoke to are pretty pleased with it.....Now do you want int/ext wastegate?.....The higher the a/r the better the top end power,,,But comes in later on the powerband.....The lower a/r spools quick but starves.......IS this a street vehicle?Actually for that hp you wont need a t76.....Unlees you want more hp down the line......If your going twins 2 gt45 will more than feed that amount of hp u desire....
http://cgi.ebay.com/ebaymotors/GT45-...em370020763664
Actually Ive had real deals and knockoff's......The only problem Ive seen with the knockoffs is that they need to be balanced....Other than that they are an exact copy of the original some time just a reman as well......