Current mods are in signiture.. Which would be the best to do next, as it will be the last one I do until after christmas when I get some new Heads and a bigger TBI unit..

1: Underdrive pulleys
2: Bigger injectors/TBI spacer
3: Jet stage 2 chip or Hypertech chip
4: Edelbrock Torque arm
5: Other?

Anyone have any suggestions? I would go to a higher stall but I don't have time to pull the tranny.. Nor do I want to pull the tranny..
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92 Firebird 305 LO3-
Eibach pro-kit springs,
Lakewood LCA's, KYB Shocks and Struts, 17x8 AR Torque Thrust II's, Yoko Avid H4 tires, LT1 Camshaft (.450 Int. .450 Ex.) Edelbrock headers, 3" Catco Cat, 3" Flowmaster American, Thunder Catback, 14x3 Open element K&N, Aluminum Edelbrock Performer Intake manifold, Accel 8.8mm plug wires, Accel Digital 300+ Ignition, All free mods, 3:73 gears, Zexel torsen Differential

 

Pullies are a waste and a bad idea on cars like ours that already have so many electrical power needs. What is your car running now with all those mods? roller rockers are $191 but if you are getting heads soon you can get cheaper rockers that need guide plates. I'd say do the ultimate TBI mods and check your fuel pressure. If its stock you're probably running lean. You could try gettin a new Y portion of the Y pipe for your headers since the edelbrock ones are such a bad design. Flowmaster makes them for $37.

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-Tas
'89 Formula WS-6

305, TBI, auto, 14x3 chrome flat based open element with K&N, Milodon 160* thermo, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips....

To be installed eventually far far far into the future: Yours if the price is right and I don't have to ship :
Hooker 1-5/8" 50 state legal headers, Dynomax 3" I pipe (PN 44063 and 43248), Catco 3" cat, and injector spacer.

Super GRK_Taz World
F-Body Dual Exaust
EFI & Intake Options
AOL IM: superGRtaz

 

Fuel pressure is fine, it's not lean... as for the 1.6 rockers, I dont want to increase the lift anymore than it already is for 2 reasons:
1: I can't replace the stock springs yet.
2: Edelbrock Aluminum heads won't work with lift of over .450 on a 305. I want to keep my options open for heads. I haven't decided if I want to go with Vortecs or Edelbrocks, I like Edelbrocks because they are aluminum and they don't need the external EGR crap or a new intake. For the money on a new intake, milling and an external EGR, I might as well just get aluminum heads. Vortec's springs are only good up to .450 also, so thats another strike against 1.6 Rockers..


What if I just got some nice roller 1.5's? I should gain some HP even if the lift isn't increased just because the rockers are made so much better..

I was thinking a Chip may be worth it, just to hold me over until the heads are done. Then I'm going to get a custom chip from Ed Wright..

A friend that has an 89 mustang said his pulleys made a huge difference but thats on a completely different car..

What about some 350 injectors and a spacer? Would that shave maybe .2 off my ET?

BTW: Haven't ever ran the car at the track, only street racing but I am going to the track within 2 or 3 weeks..

 

its impossible to make any kind of judgements without 1/4 and et. if your ET is low but mph is good we could say work on your traction, or if your traction is good but the et is low we could say get a new intake or something. see?

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-Tas
'89 Formula WS-6

305, TBI, auto, 14x3 chrome flat based open element with K&N, Milodon 160* thermo, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips....

To be installed eventually far far far into the future: Yours if the price is right and I don't have to ship :
Hooker 1-5/8" 50 state legal headers, Dynomax 3" I pipe (PN 44063 and 43248), Catco 3" cat, and injector spacer.

Super GRK_Taz World
F-Body Dual Exaust
EFI & Intake Options
AOL IM: superGRtaz

 

Sounds like it might be a good time for a brake upgrade (shoes, pads, calipers, etc.) This would keep you well under 300

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91RS convertible 355 TBI 65# inj. custom compcam grind .480/.480, Edelbrock TBI manifold, open element, hedman hedders, Y-pipe, cheap cherry bomb muffler, Hypertech cop car thermomaster, Accel coil, wires. 2.02/1.6 cast iron heads. Engine specially made by Pflugerville machine shop. Forged bottom end, balanced. Coming soon: Vacuum controlled FPR, better exhaust, Torque converter, DIY PROM, bigger TB.

 

The brakes were all replaced 3 months ago..

 

Buy yourself what it takes to burn chips and don't look back! It's not that hard and there's plenty of info and help here. It pays for itself on the 1st so called custom chip that you purchase. You can only guess what the car needs over the phone. Nothing like making a change, testing it and then making another until you have what you want.

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91 RS 5.0 TBI....Edel. TES headers .. 3" exhaust ..... 5spd 3.08

 

Where can one get PROM burning equipment that won't cost twelve arms and forty four legs?

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1992 Camaro RS (Auto) 5.0L TBI
-
Performance mods
NOS (125 HP shot)
Dynomax cat-back exhaust
Hedman headers
K & N open element/ X-Stream lid
MSD 6A ignition
MSD 8.5mm plug wires
LT1 camshaft
Soon to be installed:
Edelbrock intake manifold
B & M 2400 RPM stall torque converter
Trans Go shift kit
World Products Torquer heads

Audio
Sony Xplod CDX-M610 head unit
Pioneer 2-way 4x6 front speakers
Pioneer 3-way 6x9 rear speakers
12 inch Pioneer VCCS PRO subwoofer
QLogic sealed box
Kicker ZR360 amplifier
Lightning Audio 1 farad capacitor

Other
Macewen White Faced Gauges/Shift overlay
A-pillar gauges (Phantom oil pressure, Air/Fuel)
180* thermostat
Window Tint

 

my suggstion would be to work on the exhaust. a good y-pipe or headers and y-pipe with a high flow 3in cat woudl help the car breath a lot.
other than that all your biggest gains are gonna come from traction now. invest there once your exhaust is set.

later
tim

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91 Camaro RS-LO3,Auto
New Times Coming Soon!
Check Out The East Coast F-Body Nationals Home Page
www.geocities.com/njspeeder
My MAFB.ORG Home Page
www.mycar.net/mafb/registry/detail.cfm?id=299
DSI Racing Home Page
www.geocities.com/foff667

 

Whats wrong with my exhuast setup??

 

BahamutRS check out the DIY prom board for brands, prices and links. I think that every thing I purchased was around $260 with no bargan prices for anything.

 

You forgot to add the price of the scan tool to tune the chip for the engine.



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90 RS Convertible
Owner: Top-Down Solutions
(626)369-0040

http://www.sc3gfb.org/members/lonsal.html
http://www.taskerinc.com/gs3/profiles/Lon_profile.htm

 

sorry, didn't notice it was all set already in your sig. looks like it is time for some traction. some lower control arm relocator brackets and boxed/tubular cntrol arms would help a lot. an upgraded torque arm should follow. the control arms and brackets don't mean more than the torque arm to the suspension, they are just the worse of the two designs from teh factory.

later
tim

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91 Camaro RS-LO3,Auto
New Times Coming Soon!
Check Out The East Coast F-Body Nationals Home Page
www.geocities.com/njspeeder
My MAFB.ORG Home Page
www.mycar.net/mafb/registry/detail.cfm?id=299
DSI Racing Home Page
www.geocities.com/foff667

 

.[/b][/QUOTE] You forgot to add the price of the scan tool to tune the chip for the engine.

Sorry, I sure did forget. Auto-xray for $170 if I remember correctly.