383 Vortec TPI Dyno Results (and questions) - Page 10 - Aftermarket Product Review - Third Generation F-Body Message Boards

seanof30306 · 04-11-2003, 06:28 PM

hey mike,

some time ago, you mentioned the diagnostic tool you use to tune your car and log info for chip burning. can you tell me what it is?

thanks

slohand · 04-12-2003, 01:40 AM

hi mike,

i have a 91 z-28 conv, auto and installed a scroggin 350 vortec tpi engine. i had a chip burned but am not to pleased with it.
i live in north carolina, goldsboro to be exact and would appreciate it if you could tell me who did your dyno test and tune and about what the cost is. a phone number would be appreciated also.

HELP! the trans was rebuilt about 10,000 miles ago. it shifted very firm with the 305. when the engine (350) was installed i had a 2500 stall put in too. since then the trans shifts fine at low rpms but at wot it will not shift below about 7grand!! according to my tach. there is no firmness to the shifts either.

i had a kit installed to lower the shift points but to no avail. at low rpms fine, but wot problem. the guy that did the trans checked the detent but found no problems. IDEAS anyone????????????

fantastic thread you started here.

thanks!!

Mike Crews · 04-14-2003, 08:59 PM

Hey Guys,

Sorry that I havn't been around much. I've been interviewing for a new job (in Jesup, GA), so I've been busy getting ready to change jobs and move to Jesup. There is a dragstip very close to Jesup (in Hinesville), but I don't know anything about it.

Warbird, I'm sticking with chip "Crews6." It dynoed the best, and puts great numbers up on the Tech1. I had to move my fuel pressure up to 53# (from 51#) to get my BLMs where they needed to be, but Crews6 is the chip for my car. Crews7 and 8 don't idle very well, as Dean was experimenting with fuel and timing in the lower rpms.

Sean & slohand, I use a GM Tech1 for "diagnotics", but Dean and Street & Performance electronics burns my chips for me. His e-mail is airdeano@swbell.net (I forget what his phone # is). He's a great guy, and will work with you to get your car right. However, you will need a scan tool of sorts to give him data for your chips (stuff like TPS volts, MAF gps, BLM, Fuel Integrator, knock signals, etc.). I have been wanting to buy a new scan tool, but I don't know what it will be yet.

Sorry, but I can be of "no help" with your trans. issues. That is one of my (many) weak areas.

I got my 9 bolt rear end shimmed up (tightened), and I'll go to the track this Thursday or Saturady (weather dependent). I'll let you know how it goes.

Later - Mike.......

slohand · 04-18-2003, 07:15 PM

mike,

thanks for the info. i emailed them about the chip already.
good luck at the track!!

chevyboy07 91 · 04-23-2003, 01:28 PM

update: went 12.71 @ 106 mph in some terrible humidity. thats on a 1.7 60'

gotta love Florida :/

tune still isnt right, but its closer than last time

looking for 12.50's.....it will do it if it doesnt pull massive timing again!

On nitrous, the car runs like complete crap! Missing, backfiring, popping....still trying to figure that one out

1bad91Z · 04-23-2003, 03:02 PM

Chevyboy - you ran a 12.7 with or with-out Nitrous? What size shot are you spraying? Who tuned your PROM? You are probably running too much timing and not enough fuel if it runs like that on the bottle.

Just curious

Mike (1bad91Z)

Shagwell · 04-24-2003, 12:39 AM

Mike Crews - How are things going?

Mike - I'd agree. The juice doesn't like timing. - I'd also check everything in the system over to make sure both the air and the fuel are spraying. The crap can blow a motor fast if it's not right...

later, justin...

DAVECS1 · 04-24-2003, 09:10 AM

Where are your nitrous jets located. If they are next to the injectors and your ignition is not up to snuff you could be blowin out the flame for lack of a better word.

83firebirdS/E · 04-24-2003, 07:52 PM

Hey Mike,
Just want to congradulate you for having an open topic with the most views ever on ThirdGen.Org!
Cheers!

Pony Killer · 04-25-2003, 12:23 AM

Update from the ATco faction of the vortec folks.

Went racing on Easter sunday. and clipped off a 12.06 @ 112.5 with a 1.64 60er.

I had a really good chance of nabbing an 11.9xx but decided to monkey with the timing on the last run and went 12.21. eh well.. the next day out i wiped out the cheaters, soo no racing till i get some new rims and tires, instead of those 10 dollar centerlines, and handmedown, mickey thompson sportsman pro's of the 26x9.5x16 variety.

so the air being reasonable, i decided to give it a go in pure street form, ... ie just about strait 93 octane in it, through the exhaust, and on the 235-60-15 V rated street tires.
got two runs. the second one was a

12.42 @ 111.61, rolling into the throttle, didn't hit wot till second gear. i doubt if i'll ever make another street tire pass with it on them lil tires, but it was interesting... with practice i could certainly shave a few 1/10's off... open the exhaust who knows... but it's just tooo spookey waiting for them lil street meats to break loose at the tope end of the track.

chevyboy07 91 · 04-27-2003, 02:39 PM

that 12.71 was on the motor alone....waddya think....I think I'm a little slow to be honest with you. I'll have more times in the next week or so when the car is labeled "good to go"

1bad91Z · 04-28-2003, 10:19 AM

Ponykiller - what are the specs of your motor/tranny combo?

1bad91Z · 04-29-2003, 05:54 PM

Hows the car Mike? Any new times? I blew the collector gaskets on mine last sunday (sounds all red-necky now)! Hopefully the new crushable aluminum one's will last longer than the cheap Mr. Gasket paper crap! As soon as I get my new Fluidamper balancer and an Imperial Driveline driveshaft, it's dyno time for me. Wish me luck!

Mike (1bad91Z)

Shagwell · 04-29-2003, 08:14 PM

How are things going Mike?

later, justin...

Pony Killer · 04-30-2003, 10:36 AM

71 4 bolt main. decked, and .030 over. 4130 forged eagle crank, polished X rods, Trw forged flattops with vavle reliefs. 4.5 cc variety if memory serves me. a .002 posative deck hieght on the piston. CR around 10.7:1
062 vortecs, decked a bit, bowl work, and a vavle job. performer rpm intake, and a 1" open spacer. 780 vac sec 3130 holley
Comp XE 274 hydraulic, flat tappet cam. 1.5 crane race golds. stock vavles, and good ole fashion Z28 springs.
Slp 1 3/4 " no air headers.

700R new gearsets, sprags, rollers, and reaction sun. bands clutchs, front pump, and whatnot. Transgo kit, .5 booster, and a 3300 stall act 9.5" converter.

1bad91Z · 05-01-2003, 04:23 PM

Ponykiller - your car went 12.06 naturally aspirated?

Pony Killer · 05-01-2003, 11:16 PM

Yup NA. was about half and half 104 octan, and half 93 octane.

on 26x9.5x16 mickey thompson sportsman pro's, which... are no more.

and.. on 3.73's which weren't short enough.. it really needs 4.1's with those 26's.

next step is 28x10.5x15 slicks, and 4.56's

no more halfassin. and then maybe i'll get around to really tuning the carb..

it'll prolly see dyno time before it hits the track again.

debating whether to make a blast or two like that then put the roll cage in, or do it before...

also depends on what kind or rear i can lay my grubby paws on before then.. i'd like to get a 12 bolt moser.. but that means.. new torque arm, .... soooo we shall see. that part may have to wait... if that's the case, i'll get C-clip eliminators and pray nightly for the gears.. although footbraking it isn't ruthless on them.

LilJayV10 · 05-11-2003, 09:32 PM

i think someone is messed up, or has a virus on their computer or something. I checked mine, didn't find anything. Moderators know anything?

slp_firehawk · 05-11-2003, 10:06 PM

hey mike, have any new track times with the new cam? haven't heard from you in awhile. how's everything been?

jason

Mike Crews · 05-18-2003, 09:18 AM

Hey Guys,

I just started a new job three weeks ago, and I am working out of town (near Brunswick, GA). I havn't touched my car in the last month. We won't be settled in the new house until the first or second week of June. So I won't be able to play with the car again until then. Plus, I don't have access to a computer in my current temporary apartment, so I'll kind of be out of touch for a few more weeks.

Later - Mike........

Shagwell · 05-19-2003, 04:30 PM

Good luck with everything Mike!

- Pony Killer - make sure that 3310 is pulling the secondaries open. That could be your NOS issue, and under power NA. Mine wasn't opening even at 6,800 WOT. I built a mount and put a micro-switch on the secondaries. Turns on a little light anytime they're open over 1/2 blade, light never came on. I used a combination of parts and hand built a mechanical secondary, single pump 650. I built custom progressive linkage that doesn't even start the secondaries open until over 3/4 primary, and pretty well just snapps it open. It was night and days difference driving. Plus, you only get secondaries if you really want to, and fuel economy is still good.(well, as good as a holley gets) - that could easily be you power probs, and your nitrous issues. I'd almost bet on it.

later, justin...

madmanups · 05-27-2003, 02:32 PM

Mike, Hi. I am curious. What kind of spark plugs are you running? I have the vortec heads and I'm running rapid fire spark plugs. My friend told me to buy a set of spark plugs for a 96 Chevy Pick up. He told me they would fit right in and they would work better than what I have now? Right now the car is pulling but missing at 3500 RPM's. I don't know what the problem is. I think its electrical. My friend says its my 2000 stall or my rear end. I'm supposed to be running 335 horses but I don't feel them. Thanks.

1bad91Z · 05-27-2003, 03:28 PM

Use (NGK-R UR4). This is the only plug I run in my motor.

Pony Killer · 05-27-2003, 08:58 PM

hey shagwell... i don't think i'm having a problem with my secondaries not opening.

as far as plugs go, delco, r 43-45 tls's work just fine..

although i always get the letters mixed up... maybe it's lts's

you want the 4 which is hte code for the thread, the 3-5 the heat range, and the last letters are the length code and tip..
you want a long reach, tapered, with an extended tip.

basically if you find the platinum plugs for the truck.. you just match the tip up with the propper heat range.

Shagwell · 05-27-2003, 10:18 PM

Mike Crews - Anything new? moved in yet?

Pony Killer - Not to say your wrong, but I'd check for 100%. I was pretty sure mine were too, because the car had ungodly power for what I thought it would, then I found out they weren't opening. Also, what rpm are you spraying at?

madmanups - I'd agree w/ Pony Killer. AC Delco plugs. I run the rapid fires, but it all works. I also like the NGK's, which are a really good plug, thing is isf you foul them out once, they never really come back. Running a carb, crap happens from time to time. Also, a stall converter, nor rear end can cause a miss in the middle of an engine's power band. - I to would be checking electrical.

later, justin

Pony Killer · 05-27-2003, 11:51 PM

when i get it running again... actually when i take it to dyno it, i'll make 100%sure the rear blades are opening.

As far as spraying it... I'm not. haven't, and at this rate probably won't till next year.
the bests of 12.06 @ 112.5 on the cheaters, and open exhaust; and 12.42 on the streets, and closed exhaust.... are all without spray, the 12.0's i've run were with a 50/50 93 octane mix with 104 unleaded, and the two street tire passes, the 12.42 @111.6 being the best was on strait 93 octane, and through the exhaust.

OMINOUS_87 · 05-28-2003, 01:30 AM

1bad91Z

How is that plug working out for you? Why is it the only plug you will run, how is it special? Its seems to be a bit on the hot side.