Just wanted to post a few pictures of the little project I have nearing completion. Its a 4-bolt main Vortec 350 block, with same mild Reed Custom grind roller cam with 1.6:1 full roller rockers that were in my 305, Ported 906 vortecs, Edelbrock 3817 Intake, Stock runners, a Ported plenum, stock throttle body, and Doug Thorley Tri-Y headers. I will be running it on the 7730 for now, but have plans to switch to an 0411 and OBDII setup as soon as I make sure the engine is running properly. Its just simpler to get it running and cause as few potential problems as possible.

 

Hey, that base manifold looks familiar. Glad someone is putting it to good use.

 

Question? With all of that work. Why run a stock runner on it? Just curious.

 

Could that be because it was yours.


The runners are not really a bad restriction on a lower rpm engine. The lower intake/base is the main restriction. The 3817 for Vortecs cures that for the most part. The advantage of the stock runners is they operate in the RPM band I am intending to run. Eventually I will buy TPIS oversize runners, but for now the stock runners are running great.

Because my cam is designed to run from Idle-5,000 rpm and the stock runners won't restrict the engine with that RPM range. The transmission is also calibrated to upshift about 5,000 rpm @ WOT and I have a fairly tight 2,600 rpm stall torque converter and 3.08 gears.

I got it running last night and drove it this afternoon. Even with minimal tuning changes, the thing easily lights the tires up and pulls STRONG all the way from off-idle to the 5,000 rpm upshifts in the 700r4.

 

Awesome, can't wait to see dyno/track results.

 

You say Vortec block....Is it going to be a sequential fire TPI?

 

It is a Vortec block, but GM machined it and built it originally to HD TBI replacement specs. I ran it with several different cams and heads before getting greedy for power, leaning out, and destroying a couple of pistons. It now has a set of forged flattop pistons, a balanced rotating assembly, total seal rings, and a milder cam with ported vortecs on top.

The 0411 is an OBDII ecm and runs full sequential. I am running the L31 timing cover, crank reluctor, and crankshaft position sensor. It will be running a L31 vortec distributor as well. The 0411 is also programmed to run off of an 85mm MAF and is compatible with the TPI sensors. I won't be running alot of the OBDII sensing, but some I will be. I am looking for a decent, cheap, used 4L60E to beef up and swap into the van as well. I programmed the PCM for Normal/High performance mode shift points.

 

Fun ain't it! Cool seeing your motor come together, I'm sure you catch many a person off guard with it out of the hole.

 

I work for a Dodge dealership where the salesman and some of the techs have to have the newest "HEMI" ram. Its fun to run off and LEAVE them with the old tech 350. I just SMOKED, absolutely SMOKED a boasty salesman in his new 2009 Hemi Ram, 390 HP stock.

The only issue I have run across is with the OBDI ECM, I am having trouble with the idle. It wants to roll up and down. I checked the timing, IAC, Minimum air, searched for vacuum leaks, made a nice platue on the timing/fuel @ idle, but the surging persists. Hopefully I will get it licked tommorrow. So far I have gotten the thing to pull like a BEAST through the gears.

 

Did you mean cheap 4L60E or 4L80E? I know where there is a perfectly good but slipping 4L60E for a 2wd...

 

The only run I have been able to safely make while datalogging with any success was a 10-80 mph run from a 2nd gear WOT roll-on. I even left it in drive and the transmission short shifts into 3rd @ 4,400 rpm. Still moves out nicely though. Its ALOT quicker brake stalling it to 1,200 launching it hard, letting the trans shift 1-2 @ 5,200 and shifting the trans into 3rd at about 5,300-5,500 rpm.




Are you saying I need to make a road trip and bring my prom tuning knowledge in exhange for said 4L60E core?

 

I work in a more well to do neighborhood and many people drive $$$ cars. I suprised a Mercedes ML550 SUV owner this afternoon on the way to lunch. He got the jump on me since he decided to nail it to try to get in front of me. I stomped the pedal to WOT on that big 5.7 and caught right back up to him by 40 mph. Around 40 I slowly started creeping up even with him. The ML550 has more useable gearing than my TPI, but despite that the on-ramp came up and I was still right there beside him. Chalk one up to the TPI 5.7 VAN!! The ML550 owner had to use those massive 4 wheel disc brakes to drop in behind me

The ML550 is a nearly 5,000 lbs SUV with a 382 HP 5.5L V8 and 7 speed automatic trans. 0-60 in under 7 sec.

 

I'm sure we could work something out.

 

Fast, How effective is the '427 at controlling MPFI? I baught one for my 92 RS, but that car is long gone, and the PCM may never get used. I'm growing partical to a 4L60E over the 700-R4. Are there any advantages using the '427 over a '730/AUJP bin? -Jim

 

Very effective if it is modified (contact Haulin@$$) and programmed right.

I ran my TPI 305 in my van on a modified 427, several others run them, and another member has even run his boat on it.

http://s105.photobucket.com/albums/m...05BoatMPFI.flv

 

It still needs some desperate help on the WOT upshifts in the 700r4, but here is what it runs like. 1-2 upshift is bouncing off the 6K rev limit and the 2-3 upshift is only @ 5K. 1-2 should be happening about 5,700 and 2-3 about 5.5K. I don't think I will ever get that right without the 700r4 going away for a 4L60E.

 

I did ALOT of tweaking to the .BIN that is running it and I have it running GREAT now. It was mediocre before compared to now. WOT power hasn't changed so much, its refinement at part-throttle and idle that makes a world of difference out on the road.

 

I made a couple of videos this afternoon, just showing how mild this combination is. It makes good power though.



The injectors are heavily amplified by the camera, in person, it is MUCH quieter under the hood.

 

Fast, what are you using to scan and do graphs?
Thanks,
Ron

 

Ron,

I am still running the 7730 at this time and those graphs are screen shots from TunerProRT. Dataloging is through TTS Datamaster.