[Tom Vaught]

Very nice fabrication work there, Rob. I see good fab work every day in my job. I see a lot of extra effort in your packaging efforts that some would miss.

Tom Vaught

[johnta1]

Looks great, lemans411.

How thick is sched 10 compared to sched 40?

Also, who's bonnet is that?

[jdw_poncho]

Sch 10 3" is .120 wall
sch 40 3" is .220



Great looking set up, looks like tha rad is going to be tough getting it in without removing some piping? Did you polish the tubing or have it coated?

[ponchospidel]

looks killer. you might want to test a diff. carb hat(csu's or extreme volicity) against yours while you're on the dyno. i bet it make 1,000hp easy

[440GP69]

What Piston dish? whats your comp ratio? How did you get it low enough with e-heads? Thanks! I am Picking up a 108mm custom Job here soon so doing research, Thanks!

[HWYSTR455]

Nice! And 1000HP on a 535 should be no problem with boost, will probably overshoot that. How much boost are you going to start with?

[lemans411]

Originally Posted by Tom Vaught

Very nice fabrication work there, Rob. I see good fab work every day in my job. I see a lot of extra effort in your packaging efforts that some would miss.

Tom Vaught

thanks for the kind words it does mean a lot

Originally Posted by johnta1

Looks great, lemans411.

How thick is sched 10 compared to sched 40?

Also, who's bonnet is that?

it's just a cheap spectre hat

Originally Posted by jdw_poncho

Sch 10 3" is .120 wall
sch 40 3" is .220



Great looking set up, looks like tha rad is going to be tough getting it in without removing some piping? Did you polish the tubing or have it coated?

all the tubing is just how it came . i may have it coated eventually. and yes i have to pull the upper tube to get the radiator out

Originally Posted by ponchospidel

looks killer. you might want to test a diff. carb hat(csu's or extreme volicity) against yours while you're on the dyno. i bet it make 1,000hp easy

got one i can borrow? lol id love to try a different one also

Originally Posted by 440GP69

What Piston dish? whats your comp ratio? How did you get it low enough with e-heads? Thanks! I am Picking up a 108mm custom Job here soon so doing research, Thanks!

its a 40 cc dish with about 90 cc heads comes out to about 8.5 to 1 . if i remember correctly

Originally Posted by HWYSTR455

Nice! And 1000HP on a 535 should be no problem with boost, will probably overshoot that. How much boost are you going to start with?

planning on starting as low as i can . and come up from there maybe 5 psi. never tuned a turbo motor before so i will be taking it slow. got a whole 8 hour dyno day

[HWYSTR455]

8.5 static? Shoot, you should start around 9 at least! My guess, intercooled, you're going to be around 16 psi on pump gas easy.


.

[6 Grrrs]

nice. what trans/rear end you running?

[gearbanger]

I'm telling you man, turbo is the answer for so many A-body problems. First of all, headers suck. But look at those turbo manifolds, awesome! No more oil filter or starter issues, and four speed clutch linkage is not an issue. Next is cylinder head flow. No problem, just blow it in!

I also like how a turbo brings in air from the from versus a blower having to put a big horseshoe in the piping or suck air right off the header. That really has me thinking about doing it. What kind of turbo would it take to make 700 hp with a 461 and KRE d-ports?

[Silver Judge]

Wow, that's going to roast the tires until the cows come home !

[440GP69]

Hey Thanks!, What rod length and who made the Pistons?

[Tom Vaught]

Quote:

"8.5 static? Shoot, you should start around 9 at least! My guess, intercooled, you're going to be around 16 psi on pump gas easy."

A LOT of people miss the fact that that 1/2 ratio of lower compression also equals a lot more fuel and air pushing down on the piston. Why mess around with a "Lady Finger" push on the top of the piston when you can have a "M-80" push doing a lot more for you. Only reason for higher compression on a boosted engine is if you run alcohol or you are trying to get transient response and fuel economy.

With a 83mm turbo it is not going to spool like a T-3 Buick GN turbo.

Tom Vaught

[lemans411]

Originally Posted by HWYSTR455

8.5 static? Shoot, you should start around 9 at least! My guess, intercooled, you're going to be around 16 psi on pump gas easy..

i went a little low because i am trying to make it as safe a tune as possible. still a newbie to turbos though. oh yeah its running on E85 too

Originally Posted by 6 Grrrs

nice. what trans/rear end you running?

i am having a th 400 with a brake built. and i have a moser fab9 with 35 spline axles and 3.5 gear with a spool

Originally Posted by gearbanger

I'm telling you man, turbo is the answer for so many A-body problems. First of all, headers suck. But look at those turbo manifolds, awesome! No more oil filter or starter issues, and four speed clutch linkage is not an issue. Next is cylinder head flow. No problem, just blow it in!

I also like how a turbo brings in air from the from versus a blower having to put a big horseshoe in the piping or suck air right off the header. That really has me thinking about doing it. What kind of turbo would it take to make 700 hp with a 461 and KRE d-ports?

the borg warner s400's are very popular and are very affordable . about 600 bucks and are supposed to be able to support 800-900 hp from what i'm told

Originally Posted by 440GP69

Hey Thanks!, What rod length and who made the Pistons?

they are 6.700 length rods and je pistons

Originally Posted by Tom Vaught

Quote:

"8.5 static? Shoot, you should start around 9 at least! My guess, intercooled, you're going to be around 16 psi on pump gas easy."

A LOT of people miss the fact that that 1/2 ratio of lower compression also equals a lot more fuel and air pushing down on the piston. Why mess around with a "Lady Finger" push on the top of the piston when you can have a "M-80" push doing a lot more for you. Only reason for higher compression on a boosted engine is if you run alcohol or you are trying to get transient response and fuel economy.

With a 83mm turbo it is not going to spool like a T-3 Buick GN turbo.

Tom Vaught

thats good right? my only worry is i'll run out of turbo. i know i have plenty of motor

[440GP69]

I Think you'll be plenty Good, I'm picking up One custom made for another Pontiac 535 thats a 108mm with GT wheel Technology that i will be using, Should be Insane no matter what! BTW Awesome job on the Fab Work!

[Tom Vaught]

Info on the 83mm Garrett Turbo from the LS-1 Forums:

"I looked on here and did find a little info on it.

Compressor Wheel Inducer ( mm ) - 83mm
Compressor Wheel Exducer ( mm ) - 101mm
Turbine Wheel Inducer ( mm ) - 101mm
Turbine Wheel Exducer ( mm ) - 91mm
Turbine Inlet Flange - T-6
Turbine Housing Outlet - 5 Inch V-Band

My A/R is 1.08

We have the comp map for it I believe, its still available. Its an older TV84 unit and will flow around 93lbs/min. Not a good flowing wheel and spools slow. Also its an older flat back wheel which is hard to find any upgrades for as well."

(Is your Turbo Specs similar??)

Still 93 lbs per minute times 10.5 hp per lb of air per minute = 976 hp. Almost a 1000 hp at the engine for your set-up.

Tom Vaught

ps John Welter had a 106mm Turbo and went 6.80s in the quarter, how fast do you want to go 440GP69?

[GOAT8U2]

Cool another boosted Ponti. With an intercooler and E85 you'll have boost for days on conservative timing. What's your timing retard plans and WOT timing?

What head gaskets are you running and I'm sure you've got a wideband in a pillar to monitor everything right?

[gearbanger]

I was wondering, do most people mount the turbo on the frame that way? It seems like you are going to have a hard time getting it going on the dyno without some bracketry to hold the turbo, or will the piping hold it up temporarily while you dyno?

Seems like it would be more stable if it were mounted to the motor like a blower and that way there wouldn't be the motion between the engine and the frame to deal with. Maybe you wouldnt need the flex joints?

Just wondering as I dont know anything about turbos or blowers for that matter.

[440GP69]

Most Should Mount it with the Engine Because when the Engine Twists in the frame you don't want the turbo mounted on the frame otherwise you will be breaking some parts unless you use flex tubing

[gearbanger]

I can see where mounting it on the frame would possible make the turbo run a little cooler, especially if the bracket was a big enough heat sink, but I can definitely see the advantages of mounting it to the engine as well. I was only asking because right now my frame is getting ready to be powder coated and I would want to wait on it if I thought I might go turbo and needed to mount it to the frame.