next mods for mo powah???

[MIGHTYMOUSE]

ok so the truck is stuck with the v6 for the immediate future, its together looking good and running good.. leave it alone??? NOOOO

here is what i got, where can i go now? what is the big hold up?

the engine is either Waller or RPM or some of both originally, long story

SRP pistons (unsure of compression)
Eagle rods
Balanced rotating assembly
4 bolt main conversion
ARP hardware
Vortec head and intake conversion
Comp cams 415 cam
fel pro gaskets
comp roller tip rockers (unsure of ratio) 3/4 turn past 0 lash

new ignition module from advance
TR-6 plugs

Race Proven Motors air to air intercooler and piping
Precision Turbo PT-61 turbo 3" inlet and ex
3" dp to 4" dynomax bullet muffler
factory exhaust manifolds and crossover, wastegate actuator
75# / hr injectors on stock fuel rails
msd coil, msd 6-a box

ramchargers fans
big stuff 3 managed, snow single nozzle boost progressive meth kit

i have two 255 pumps in tank, stock lines

i have random shocks front and back, overload springs clamped on the front of the leafs

i am not and do not plan on locking the py3600 converter on my 4l80e

my best was on 26# and 21* timing on a mix of 93 and 110 octane and straight methanol in the alky kit

I would like to think i am out of turbo, but it holds boost fine and leads me to think there is a restriction down stream in the intake or heads/cam. a larger turbo may though yield gains from reducing backpressure.. and i see most people in bottom 11's running larger

anything that i didnt mention above is a safe assumption it is stock

thanks for your assistance!

 

[JSM]

Re: next mods for mo powah???

I would say 3 things are possible. Turbo maybe, cam a little (you mentioned both of these) and I honestly feel a converted stock carb intake is a big improvement. Others might disagree but I have seen trucks with them run times that doesn't make sense.

Just my theory.

What are your inlet air temps down track? The intercooler might be a restrictor. I never liked how the tank was what was hanging down catching most the air -vs- actual fins.

 

[MIGHTYMOUSE]

Re: next mods for mo powah???

ill check the logs when i get home.

i am down for a turbo upgrade provided it doesnt totally murder my spool. i have no idea what fits

 

[JSM]

Re: next mods for mo powah???

I have been involved with 3 trucks running a 67dbb turbo.

here is one of them.

http://www.youtube.com/watch?v=gwoELR_-WAw

it had l35 heads, but did have a carb intake conversion.

How fast do you want to go now? I know it is a moving target.

 

[dgoodhue]

Re: next mods for mo powah???

What are your inlet air temps down track? The intercooler might be a restrictor. I never liked how the tank was what was hanging down catching most the air -vs- actual fins.

Yeah I would look at the intake temperature as well and put on a air scoop if possible on the RPM A2A

I have a PTE 61, mine is actually a 6131BB, (31 is the exhuast wheel and BB= Ball Bearing). If that is the size turbo you have I think your doing pretty damn well for times consider the Typhoon limitations (shorter wheel base and higher curb weight) You can tell the turbo size by removing you IC pipe and looking at the air compressor outlet (it should be inscribed on the inside). A bigger turbo turbine (exhuast) wheel such as 6152 or 6167 will have a little more potential. Turbo Buicks seem to have another 3-4 mph with a 6152 vs a 6131.

If your intake temps are fine, You might be able to fine tune the fuel/timing tables, but I wouldn't expect much more than few mph on top what your doing already doing, you biggest gain would probably be cold weather. I honestly think your Turbo/Cam/Heads are porbably well match for each other. You could probably setup to one of the PT 67 turbo's. Otherwise, to change the heads/Cam/(,maybe intake) you will probably find the 61 holding you back.

 

[MIGHTYMOUSE]

Re: next mods for mo powah???

i am almost 100% sure that the discharge of the turbo cold side is 2", it steps up to a 2.5" pipe to enter the intercooler, cant remember if the pipe out of the intercooler to the tb is 2 or 3.

i recall iat's to be very reasonable and attributed that to the snow meth kit doing a great job.

I wouldn't mind nastier cam either, i am shifting out of my gears at 5600rpm

a 10.x would be the most obvious next goal but if it wont split the motor open i wouldnt mind at all skipping some steps.

 

[JSM]

Re: next mods for mo powah???

I would turn the boost down some, turn the meth off and see what you get without it to see how the air/air is working for you.

I heard a V8 at 5-7psi of boost will run the same times your running. Twin GT35 non BB turbos.

 

[2kwik4u]

Re: next mods for mo powah???

First thing that jumped out at me was the unlocked converter. Stock trucks pickup some decent time with that mod, not sure why you wouldn't want to do that on your build.

 

[MIGHTYMOUSE]

Re: next mods for mo powah???

its kind of a deal i have with yank speaking for the efficiency of their units, i dont think my converter deserves that beating, but when i check the iat log when i am home i will also report my converter slip%. i don't lock my car's either.

 

[2kwik4u]

Re: next mods for mo powah???

I know one of the local guys has a Yank, and they said he wouldn't need to lock his either. He still did and it held up just fine. Can't remember the times before/after lockup though. I want to say it was John B Reallywill's truck thats in the video above (Have to check when I get home since I can't see the video above at the office).

 

[Windedv6]

Re: next mods for mo powah???

David

I had approximately the same build a few years ago in my Ty, but with a smaller (412 cam) and a larger PTE 70 stealth turbo. Ran 11.2-11.4s with a mix of 93 and 110 octane. I did not lock my converter up until the top of third. It was a great combo and very streetable. A close comparable to the 70 stealth is the PTE 67 gtq.

I would not change a thing except the turbo. I ran my 412 cam to 5,800 with 24# of boost and 22 degrees of timing. The converter was a 3,200 stall 9/11.

You should better my times as your Ty would be lighter than mine. I used to compete in car audio and my entire truck was soundproofed with dynomat. Weighted in over 4,150 lbs. My sixty foots back then were in the 1.7s with nitto tires. Also the 4l80e trans is better for et's than my 700r4 with the lower first gear.

With the 70 stealth or the 67gtq you should get in the low 11's and high tens on a good night. Any bigger than that you will be needing bigger injectors and will lose some spoolup. I did run atr headers vs stock manifolds, but there is not much performance between the two at that power range.

John

 

[jwaller]

Re: next mods for mo powah???

bigger turbo. your mph is way down for your et. you need more hp.

 

[MIGHTYMOUSE]

Re: next mods for mo powah???

thanks guys.

what is the drawback of the 72mm i see being used?

at the end of my best run my iat's were 110*f and my converter slip was down to 10%

 

[JSM]

Re: next mods for mo powah???

I would think if your stalling around 3600 you won't have a problem. Spool is the big thing.

110 deg with alky seems still high to me though.

 

[Windedv6]

Re: next mods for mo powah???

thanks guys.

what is the drawback of the 72mm i see being used?

at the end of my best run my iat's were 110*f and my converter slip was down to 10%

Nothing wrong with the 72s. The spoolup will be slower but you will pull harder on the top end. Good for the track, but hurts the street quickness off the line. The injectors should be moved up to 83 or 84s. Your block and crank will be getting into the questionable area with the power range. Traction starts to become a factor. I put more money into the upgrades to go from 11.2 to 10.6 than I put into practially the whole previous build. Running a Ty into the mid tens is like taking a Sy into the high nines.

The 67gtq and the Stealth 70 size turbos are a good place to stop for reasons of reliability, cost saving and drivablity. The better cranks and bowties block will help the reliability after that but the cost for everyhting to upgrade keeps climbing. For you would not be as bad as you have the bs3 and the 4l80e already. You do need to get rid of the c-clips in the rearend and get the axles upgraded. Your convertor would work well with a 72 turbo.

John

 

[MIGHTYMOUSE]

Re: next mods for mo powah???

so you 'pro turbo' guys is it correct to say my gains would be in pumping efficiency by reducing backpressure?

i thought 110* after 11 seconds of 26# boost was good! i have seen melted IAT sensors from less boost.

i do really like how quick my turbo comes on, and i also do not want a looser converter..hmm

as for traction i run 275 drag radials all around, i just need some battle bars or caltracs to hold the fronts down.

who has a good one of these turbos laying around that fits stock manifolds and whatever downpipe i got. (older pics)

 

[Windedv6]

Re: next mods for mo powah???

so you 'pro turbo' guys is it correct to say my gains would be in pumping efficiency by reducing backpressure?

i thought 110* after 11 seconds of 26# boost was good! i have seen melted IAT sensors from less boost.

i do really like how quick my turbo comes on, and i also do not want a looser converter..hmm

as for traction i run 275 drag radials all around, i just need some battle bars or caltracs to hold the fronts down.

who has a good one of these turbos laying around that fits stock manifolds and whatever downpipe i got. (older pics)

That is somewhat correct. 26# on a bigger turbo with a bigger exhaust side will have less back pressure (and longer spoolup). The pte series with the pte syty housing will fit your manifold and downpipe. If you stay with the Stealth 70 the three inch inlet willl fit with your current elbow and air cleaner setup. If I am remembering correctly the 70 Stealth is the 67 wheel in the the smaller cover (for that stealthy smaller turbo look). The 67gtq has the bigger front cover with the 4" inlet. Here is the PTE SYTY turbos.

300-4000 SyTy 44 565-hp .85 A/R 921.99
300-4100 SyTy 60 580-hp .85 A/R 921.99
300-4200 SyTy 51 585-hp .85 A/R 921.99
300-4300 SyTy 52 600-hp .85 A/R 921.99
300-4400 SyTy 54 620-hp .85 A/R 921.99
300-4500 SyTy 63 690-hp .85 A/R 1021.99
300-4600 SyTy Stealth 700-hp .85 A/R 1024.99
400-4700 SyTy67GTQs 730-hp .85 A/R 1459.99
600-4800 SyTy67GTQH 740-hp .85 A/R 1459.99
600-4900 SyTy70GTQH 800-hp .85 A/R 1459.99
600-5000 SyTy71GTQH 850-hp .85 A/R 1539.99
600-5100 SyTy72GTQH 875-hp .85 A/R 1459.99
600-5200 SyTy74GTQH 900-hp .85 A/R 1459.99
600-5300 SyTy76GTQH 925-hp .85 A/R 1459.99

The advertised HP numbers ratings are for peak efficency. When used in our application and with a good tune we can produce approximately 75% - 80% of this efficency rating (flywheel HP).

For example you should pick up about 50-75hp going from your 61(simular to the pte 52) to a stealth 70. The lower number would be for the fact that the bigger turbo may not be as efficient as your 61 because of heads, cam, manifolds etc. The 67gtq should add approximately another 20 hp more than the stealth 70.

John

 

[George Blake]

Re: next mods for mo powah???

ProYank3600. That's an 11" converter isn't it? As long as your not making over 600HP, you can probably lock that up. Just remember it's like burning the candle at both ends. The more you do it, the shorter it's life. Dave said it has a unique piston and lockup clutch that covers a much larger surface area...if that's the one I'm thinking of. Now if your talking 800HP stuff, I would not lock it at the track. Does it pull like a 2800 than run up to like 4000 stall when you go up against the brakes? Dave's pretty cocky but he knows his stuff. Get the duty cycle down as much as possible so it locks up quickly. You don't want it dragging like a luxery car. That will probably help a LOT with the slippage. The 80e's TCC setup is very tuneable.
Put an inline filter between the trans and the cooler. The LAST thing the fluid goes through is the converter before leaving the trans and going to the cooler. If you do fry the converter clutch, the inline will catch it and save you a total rebuild.

 

[George Blake]

Re: next mods for mo powah???

We put that in Hardmans. He's not making enough power to hurt the Yank. He can lock it up all he wants. The one that Mightmouse has is the 11" model, I think. That one is like $1000 but well worth it.

I know one of the local guys has a Yank, and they said he wouldn't need to lock his either. He still did and it held up just fine. Can't remember the times before/after lockup though. I want to say it was John B Reallywill's truck thats in the video above (Have to check when I get home since I can't see the video above at the office).

 

[MIGHTYMOUSE]

Re: next mods for mo powah???

i like the way you talk winded. i am down with picking up 70-90 horse, i dont mind a larger elbow/filter at all.. though its funny my car is making about 1200 horse through a 4" elbow
i have the sc3400 converter in my car (also 80e) and love it