Rob Raymer

Yes, Turbo Blue 109 leaded.

Give me time my brother! I've only been to the track once! I'm really not sure how much more, if any, that it will pick up. Actually, I think the T-74 is about at its' limit on HP already. But I have another turbo being built as we speak. Can you say, 800rwhp on stock cubes?? Sure you can.

Exactly.

I don't think so, but it's possible. Like I said, I think I'm just out of turbo. This is the same size turbo I ran before on the car with teh ARE 375ci, and made 707rwhp. Also on my Buick, and made 731rwhp. But with the Buick, it still had an AOD trans, and stock rear end. So I figure that the drivetrain loss explains the rwhp difference. PTE rates the Turbo for 900FWHP. If you figure a 20% driveline loss on my Z, you would get 720rwhp. Pretty close, huh?

I should know for sure in a few weeks. As soon as Garrett gets my turbo done.

VINCE

iTrader: (1)

ttt

Pro Stock John

iTrader: (34)

I'd love to see someone crank out 800rwhp with a 348ci setup.

We plan to run mine at 11:1 AF at WOT with the FAST.

5-So if the turbo maxes out the peak will be lower?

6-What happened to that T88? you had at the end of last year?

7-Are your heads o-ringed?

ChevyNo1

348 or 346? Rob's is 346, right?

- Dug

Rob Raymer

It oughta fly. (<--Kentucky slang)

Yes.

I still have it actually. Figured the small cube motor couldn't use that much turbo. Plus, it wasn't a direct fit to our turbo kit. MAJOR fabrication for that.

Nope, they are not. No big studs either. BTW, on the way home from the dyno, I hammered on it a few times. I couldn't resist...I turned the boost up to 23lbs. Just to see if it would handle it. I made a full run (1st,2nd,3rd gear) and logged the run on the FAST. A/F maintained a near-constant 11.0:1, with no KR. It pulled HARD down low and mid-range, but seemed to die off near 5700rpm's. We are changing the gears from 3.50's to 3.25's today. That way I think I can stay in the efficiency range of the engine/turbo longer through each gear. Guess we'll see this weekend.

That's what's so great about the FAST system once you have it dialed in, you turn the boost up, and A/F stays exactly the same.

Regarding cubic inches - The cylinders were honed .005.

Rob Raymer

I've been tryin to fax you the Dyno sheets all morning. Your fax doesn't seem to be on.

Anyone else I can fax them to and have them posted??

Pro Stock John

iTrader: (34)

3.905 = 348ci, that's what ScottWS6, me, Harlan have... Very interesting comparos I am a big proponent of the stock cube movement.

8-How fast might you go with the new turbo?

Z00

Post deleted by Z00

Rob Raymer

PSJ- I'm not too sure how fast it will go. Just that it will go, or blow.

Allen - Thanks. You've got fax.

VINCE

iTrader: (1)

I will have to check when I get home. I am thinking my gf turned it off, but it was on when I left the house.

VINCE

iTrader: (1)

23lbs of boost.. Wow!!!! You should do that on the dyno...

Z00

http://people.maxweb.com/allen/dyno1.jpg

and

http://people.maxweb.com/allen/dyno2.jpg

Sorry it took so long.

VINCE

iTrader: (1)

Thanks for posting that.. Rob you must have dialed the wrong number.. Caller ID is a beautiful thing. No one has called my house at all today..

Rob Raymer

Thanks Z00!

BTW, the 701rwhp graph, for some reason lost it's rpm signal at the beginning of the pull. That's why part of the graph is missing.

Which is why I posted the next closest HP graph. I also have a graph of the 758rwtq number from earlier in the day (when the engine was cooler). I'll put it up too as soon as I get my scanner repaired.

Vince - It wasn't actually that your Fax didn't work...but the line was busy all day. So maybe I did dial the wrong number. Anyway, do those graphs make you happy now??

VINCE

iTrader: (1)

Those graphs make me MORE than happy... It is nice to see such a broad power curve. Now I see why you get that heavy car that the track.. Looking at your graph has convinced me TURBO is the way to go.

LiquidSnake

Rob : Congrats again if you dont mind i would like to ask you a question : Did you monitor your oil temps after races or ..lets say driving the car under a fw wot continus runs?I am interested about turbo Ls1 s oil temp.I bealive turbo Ls1s will face oil cooling problems.Maybe not on a drag track but on a few minutes of high speed driving under those hot summer days even with a oil cooler kit.Your data is valuable to me.Also this question is everybody with a turbo ls1 engine.Thanks

CHRISPY

Rob,
Nice graph!

Are you running mainstuds and headstuds? Stock diameter headstuds?

What do you think the stock crank will handle with good rods and pistons with about 9.5:1 comp and the 74 turbo? Would 600RWHP reliably on pump gas be possible?

Also was this through a completely stock kit or your huge front mount cooler?

thanks again and great job,
Chris

VINCE

iTrader: (1)

Sounds like a good combo Chris..

Gold Phoenix

iTrader: (1)

Rob, so you basically built a "budget" motor with a bolt-on turbo kit. What is the difference between the stock PCM and the FAST system? I own LS1-edit, but I am going to have someone help. What was you fuel system like? Boost reference, sumped fuel cell, -10AN fuel lines? How about the TB, MAF, and exhaust components? How about a tuning down for street, "pump gas" run? I would like to see the M6 in it

Scalpel

iTrader: (4)

Man, after seeing that graph, this is what I need to do:
Forged 348 CID Iron Block LS1
6.0L TEA Heads
Custom Cam
QMP Turbo KIT @ about 9 lbs