Hey guys tell me what you think of my new idea. I was flipping through the Want ads and I came across a 327 block for sale at a good price. I was think of turning it into a 302 and putting it in my Z. I think it sounds cool just like the original Z had! let me know what you think

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I WOULD RATHER PUSH A CAMARO THAN DRIVE AN IMPORT

1983Z28 350w/ edelbrock performer RPM power package , dynomax shorty headers, 700R-4 with a lot of goodies, Hurst shifter, edelbrock 3" exhaust system, ASCD SS hood, 16" IROC rims.

soon to come:
completely done over suspension, black paint with flames, NOS, 4.10's SLP headers and maybe a T-56

 

Cool, but remember, theres no replacement for displacement. Early Camaros had 327's too

I'd go with a stock 327/365HP cam, a single plane intake, and some aluminum 87-up Vette heads.

You'd be going easy 12's.



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Mike L.
It ain't pretty.......

1987 IROC Z TPI 350 A4 3.27 Borg-Warner.

Mods: 2300-2500 Stall Converter, Shift Kit(GM parts), TPI Specialties Stage 3 PROM, Modified Airbox w/ K&N's, homemade cold air, Relocated MAT sensor, Gutted MAF, 160* thermostat, Accel 8mm Wires, bypassed TB coolant, Flowmaster 3 chamber single 3" in/out muffler, 3" MAC mandrel intermediate, custom dual !cat Y-pipe. airfoil, ported plenum. !smog

http://www.MichaelLasiuta.home.att.net

**BOYCOTT LAPEER DRAGWAY**

 

I am in the 12's now. This is something to buy and put on a stand in my garage and buy complete forged internals for and make some serious power out of it. The 327 was a good motor but the 302 was better. It could rev higher freely. I have heard of 7000 easy in those motors

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I WOULD RATHER PUSH A CAMARO THAN DRIVE AN IMPORT

1983Z28 350w/ edelbrock performer RPM power package , dynomax shorty headers, 700R-4 with a lot of goodies, Hurst shifter, edelbrock 3" exhaust system, ASCD SS hood, 16" IROC rims.

soon to come:
completely done over suspension, black paint with flames, NOS, 4.10's SLP headers and maybe a T-56

 

A 150HP LG4 305 can rev to 7000! LOL The problem is... will it make any power while it's there ? Will it NOT self destruct ?

 

The 302 is just bad a$$. They ran in the same stock eliminator class as bigblock Fords and Chevys. I'd love to put one of those little screamers together with 6" rods, SFI, Twin Turbo, and just spin the **** out of it.

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'87 Bird 350 .060 over 700R4 + Lots more

 

Synergy the Chevy 302 was made to rev! It could easily take 7000 RPM's and I think a LG4 would blow up before 7000RPM's and the LG4 doesn't make any power anywhere else so I wouldn't expect much at 7000 either.

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I WOULD RATHER PUSH A CAMARO THAN DRIVE AN IMPORT

1983Z28 350w/ edelbrock performer RPM power package , dynomax shorty headers, 700R-4 with a lot of goodies, Hurst shifter, edelbrock 3" exhaust system, ASCD SS hood, 16" IROC rims.

soon to come:
completely done over suspension, black paint with flames, NOS, 4.10's SLP headers and maybe a T-56

 

the real question is where are going to get a crank?

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92 z28 170,000 miles 14.20 on goodyear eagles before exhaust only mods k&n and slp 13/4 headers and dual 2 1/2 exhaust
87 trans am 12.20 on motor too many mods to list

 

you can make a 350 rev 7k without too much trouble and make more power. the 302 wasn't that great of an engine. it was one of the many that felt really fast since it revved high, but didn't do much. stock it was barely a mid 14 second set up. there was one at a super chevy show in a 55 chevy that launched at 9k and shifted at 10k. it only ran 10.5's. a well built 355 could do that turning 7500 without stressing everything else in the drivetrain as much. only reason for the 302 was the trans am series 305 cubic inch rule. otherwise there would have been no use for a short stroke engine such as the 302. if your insistant on the set up, check gm for the crank or an aftermarket vendor. shouldn't be a problem.

 

What zippy said, GM was forced to make the 302 to legally compete. Originally it was just a 327 block with a 283 crank. The 302 is a cool engine, but a 350 can be built that costs less, makes more power, and doesn't rev as high. I'll stress this again, the 302 is a sweet engine. I'd put it against a 302 ford anyday. Another way to look at it is why is it common to stroke a 350 to 383 cubes and not as common to destroke a 350 to 327/302. Performance per dollar.


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350 with stealth intake, holley carb, 470 lift cam. 700r4 with .5 boost valve, vette servo, tci lock-up kit, B&M megashifter. Richmond 3.73 gears, powertrax locker, timkin bearings, synthetic lube. Custom 3 inch single into 2 2.5 pipes. 1 1/2 drop springs, 1 5/16 solid front sway bar, 1 inch rear bar, custom subframe connectors, custom LCA relocation brackets. Kobel ground FX, current red metallic paint. Lots of other stuff...
82camaro

 

you forget that those '14 second' times were on the same size tires as on a new Cavalier. 14 inch tires with 70 series rubber, and not even radials, bias-ply crap.

My Dad owned a 1969 Z-28, he said it was amazing. There was no end to the revs. He likes his big block more for the low-end but if you want an engine that will rev like a raped ape, a 302 is your toy.



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Webmaster: www.IROC-Z.org

 

the 1st gen could also be had with a 307 and all cars came factory with a 2 speed powerglide unless the option TurboHydramatic 350 was ordered.

No, not easy 12s.. a 327 revs well but it doesn't build the torque needed for launches. You would be better off with a 383 or something with a long stroke. You won't get the revs but you will get a flatter torque curve which will make it feel faster..



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Webmaster: www.IROC-Z.org

 

Well eventualy I plan on building my old 327 and going the factory "off road" route like Iroc mentioned. It all depends on the aplication. Yes the 302's & 307's were all fast revers but if your trying to pull; lets say a 57 chevy down the 1/4 your dreaming if you want it in the 13s and lower, not all the rpm in the world will do it. Now pop that into a geo and you might have a 8sec ride.
How striped down is your Z? If its the 83 in your name, stock weight is 2800 pounds "according to NADA GUIDE" Now that might work if you have it stripped to a clean 23 2200 pounds. I have never seen a 302 or 307 run lower than mid 13's unless aided by NOS, these were track only cars. I have however seen plenty of 327's run 13's all day long and then drive off the track and home.
It's your choice just make a well informed one.
SSC

 

"There's no replacement for displacement...."

For the street go with a stroker crank and 350-??? cubes.

A 302 is "sparky" but all that noise don't mean squat.

 

I remember reading a comparison of a 69 Z28 with a 302 versus the same year Cuda with a 426 Hemi. They put headers on the 302 and installed a better clutch and the thing ran mid- to low-13s all day long--easily keeping right up with that 426ci monster Cuda.

To my mind, that is one darned fast car right off the showroom floor. If you want to make a 302 for your Camaro, go right ahead. It won't be a slow car

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1986 Camaro Sports Coupe
T-tops, power hatch, third brake light
LG4 305 V8, "Damonized" Q-Jet 4bbl, K&N filter
Crane ignition kit, TH700R4 transmission and Derale cooler
Air conditioning, pw, pl, pb, ps, tilt wheel
Kenwood cassette, Pioneer 6x4 component front speakers
Rockford Fosgate 6x9 Punch rear speakers
Aluminum slots and Goodyear 225x60R15 Eagle HP tires

 

Not to flame anyone but most of you guys are totally stuck on there is no replacement for displacement saying. Just because you have never seen a fast 302 doing better than 14's that doesn't mean they aren't out there.

Someone up above stated that there was one launching a 9K and shifting at 10K and he only ran 10.5! That is damn fast! Especially in a 55 Chevy those things are like tanks!

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I WOULD RATHER PUSH A CAMARO THAN DRIVE AN IMPORT

1983Z28 350w/ edelbrock performer RPM power package , dynomax shorty headers, 700R-4 with a lot of goodies, Hurst shifter, edelbrock 3" exhaust system, ASCD SS hood, 16" IROC rims.

soon to come:
completely done over suspension, black paint with flames, NOS, 4.10's SLP headers and maybe a T-56

 

Well, you asked what do we think, and more displacement does offer the possibility to build more power (and more streetable).

There is a lot of "myths" about the DZ302, but Zippy is right: they were just another 14 second car in there day. And tires where not a big reason, because their MPH were only in the 100 mph range. BTW, 3.73s were stock on those cars with up to 4.88s available. And no automatic...because, there just wasn't much torque from those motors.

If you do the same mods to a 350 that you do to that 302 and the 350 will win everytime. And because of the 350s larger displacement, what would be wild in a 302 is milder on a 350.

I remember those cars very much. They were okay, but they were not the "street killers" of the late 60s that everyone thinks they were. There were PLENTY of faster cars in those days.

But, you are obviously hell bent on building your 302, so have fun.

 

HEY I wasn't bashing anyone's replies.I was just stating what I saw that most people are "bent" on the idea of there is no replacement for displacement. Well like said above there was a 55 Chevy running 10.5 with a 302 and shifting at 10K. That may not be fast but it is definately cool that a small block is revving that high. SO what they didn't build alot of torque its a cool idea I think because of the heritage factor. Well whatever to each his own I called about the 327 block today and left a message.

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I WOULD RATHER PUSH A CAMARO THAN DRIVE AN IMPORT

1983Z28 350w/ edelbrock performer RPM power package , dynomax shorty headers, 700R-4 with a lot of goodies, Hurst shifter, edelbrock 3" exhaust system, ASCD SS hood, 16" IROC rims.

soon to come:
completely done over suspension, black paint with flames, NOS, 4.10's SLP headers and maybe a T-56

 

i would have to say this:

there is a reason that the fastest Camaro ever made was not a 302. The fastest production Camaro ever was the '68 SS 396 375hp. It ran 13s stock, 12s with slicks.



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Webmaster: www.IROC-Z.org

 

A new LS1 runs 13's too.

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I WOULD RATHER PUSH A CAMARO THAN DRIVE AN IMPORT

1983Z28 350w/ edelbrock performer RPM power package , dynomax shorty headers, 700R-4 with shift kit, 750cfm carb, edelbrock 3" exhaust system, 16" IROC rims and ASCD SS hood.

future mods:
SLP headers, completely done over suspension, black paint with flames, NEW PLAN IN THE MAKING:
BUILD A WILD CHEVY 302 JUST LIKE THE ORIGINAL Z28 HAD

 

it runs 13s on 275/40ZR17 rubber, the SS396 375hp Camaro ran it on Cavalier tires.

14inch, the profile was 70 series and the width was 205..

like i said, with slicks it ran mid 12s, obviously a serious traction problem.

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Webmaster: www.IROC-Z.org