12366573 Vortec Intake Manifold for L31 Heads $225.00
12558060 1 ea. L31 Vortec Cylinder Head $225.00
http://www.bgcperformanceparts.com/

That would be the first rowdy TBI ive seen.... thrown in a used LT1 cam and id have a pretty good amount of respect for a TBI.

This just seems like to good of a deal for you guys to pass up, and the manifold is for holly carbs and ive seen you guys like the holley 670 cfm carbs? What do you guys think?

 

If you can figure out a way to make them emmisions legal then I'll do it. Vortec heads don't have EGR provisions, or so i've been told..

 

My plan is to tap into the passenger side header collector and use stainless line to route the exhaust up to where I can put egr on it. I was planning on getting the assembly from a v6 Fiero or other 2.8L car since they run external EGR's. and then plumb it into the egr inlet that is in the rear of the vortec intake manifolds. The Vortec intake manifold have an egr pipe inlet in the rear of the intake near the distributor.

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91 Camaro RS 5.0L Black Convertible 700R4
** Added so far **
*GM Wonderbar,Alston SFC's,spohn LCA's and Panhard rod
*Turbo City Inj Spacer
*Dual Snorkel Air Filter
*March Performance Pulleys
*GM 3.42 Gears with OEM Zexel POSI
*Edelbrock headers
*3" High Flow Cat
*3" Dynomax Exhaust
*Walbro 255 lph Fuel Pump
***Future 330hp Vortec Crate with LT4 hotcam and 454 TBI

 

The compression ratio will plumit from using a 64cc head on a 305. You can shave um to get some back, but they really are only a 350 head. Plus, you'll need computer work and possibly valvetrain work. You also have to get headers. The list goes on.

------------------
88 firebird formula - 13.9 @103mph, 2.6 60ft
350 Vortec TBI
214int/224exh, .471int/.491exh
Edelbrock headers
T56 - SIX-speed
open 3.73's
3 inch Flowmaster catback
I love pissing those LS1's off
My Formula

 

HOLY $HIT THE FIRST HALFWAY FAST TBI IVE EVER SEEN!!!! im very impressed

 

There's actually quicker TBI's here (no offense, Birmass, that's still a damn good time).
We have one that ran a 13.1, and NJspeeder is close to having a similar timeslip.

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No guts, no glory.

 

Don't worry. If you guys will note my 60ft time and see that I don't have posi, you will notice that there is HUGE room for improvement. My computer also needs some help. I'll hit 12's with the right tuning and tires .

Unfortunately I want better tuning options so I've gone and bought an Accel Pro-Ram. It's an MPFI system with computer, intake(made by John Lenginfelter), 750 throttle body, and wiring harness. I'll be able to program with a laptop while the car is running and easily upgrade in the future.

------------------
88 firebird formula - 13.9 @103mph, 2.6 60ft
350 Vortec TBI
214int/224exh, .471int/.491exh
Edelbrock headers
T56 - SIX-speed
open 3.73's
3 inch Flowmaster catback
I love pissing those LS1's off
My Formula

 

heh, put a weiand blower on that 305 with L31 vortec heads and you'll really be cookin'

------------------
-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

 

not everybody is doing it because not everybody has nearly 800$ to spend on their car, plus the 300 and hours spent to tune, the more $ on exhaust and other things that will come up after the upgrade.

not to knock it, because i love seeing people modify their cars, im just giving reasons of why everybody is not doing it.

if you got the cash, that would be a nice way to go. but the age old argument comes back, with that kinda cash, your $ per hp, goes twards thinking of 350.

 

First off the L31 heads aren't exactly a bolt on item. Sure they Bolt to the block But the intake bolt pattern is different unless you get the one's drill for the "old style" then you have the above mentioned Compression probelm and if you shave them the .035-.040" that you need to you then have a problem lining up the intake. The spread on the heads is too wide and there aren't any intakes that cover that so you have to have special adapters made up to make your mandifold work. Then even if you do that the intke port position design on the Vortec stuff is different than the old style intakes and takes some serious port matching to make that work. By the time it's all said and done you are looking at about $1000 in a set of $400 heads just to make them work. Yes they are great heads but it's just too much work and cash to get them to go on a 305 "correctly." But that's just my opinion and what I've found out through my research.

-Lars

 

I'll hit 12's if I put everything I have/want in the damned car. I wish I could freeze time and work on the car without losing 20 hours of my life a day

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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
LT1 camshaft
Soon to be installed:
Edelbrock intake manifold
3.42 rear axle
B & M 2400 RPM stall torque converter
Transgo shift kit
Moroso Blue Max plug wires
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

 

wieand superchargers dont bolt up to vortec heads...if they did I'd have an 11 second car right now. That supercharger sitting in my garage is mocking me

------------------
91 RS W/carbed 350, Vortec heads, performer rpm, Comp cams Xtreme energy 224/230 duration and .477/.480 lift. BFG Drag radials. 3.42 posi,Corvette servoed 700r4, 3000rpm stall converter. Edelbrock TES, 3inch cat, flowmaster with single 2.5 inch exit.
Best time yet to come
13.0 @ 107- N/A
12.5@ 117- 100HP Nitrous

This is a Pic of my car in race trim www.tbns.net/billyjay/camero.jpg

Yes I know how to spell camaro- so dont ask. I didnt make the link

 

it doesn't bolt up but that doesn't mean that it can't bolt up. Shane B put a weiand on his vortec heads.

------------------
-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