283 - Team Camaro Tech
Engine General Engine Discussion.

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post #1 of 16 (permalink) Old Feb 8th, 19, 11:16 PM Thread Starter
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danny
 
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283

Is a 283 a good motor. I’m think about but one that I came across and possibly putting it in a first gen
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post #2 of 16 (permalink) Old Feb 9th, 19, 03:17 AM
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bob
 
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Re: 283

Absolutely nothing wrong with a 283. I would take a 283 over a 305/307 in a heartbeat.
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post #3 of 16 (permalink) Old Feb 9th, 19, 05:27 AM
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Re: 283

They are usually pretty anemic in the power department imho....

Don

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post #4 of 16 (permalink) Old Feb 9th, 19, 05:30 AM
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Re: 283

283 was the first motor I had back in 1975. 11:1, don't know what the cam was, Weiand single plane. Dispatched 400 GTO. Best motor I ever had except my 302.

68 302 M20 - 85 IROC Z
The older I get the faster I was.
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post #5 of 16 (permalink) Old Feb 9th, 19, 05:40 AM
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Re: 283

you can always turn it into a 301
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post #6 of 16 (permalink) Old Feb 9th, 19, 08:44 AM
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Re: 283

301 requires a 327 block and a 283 crank with pistons to match bore and stroke. Results in a 301.5 cubic inch engine that competitors called a 301 and Chevy called a 302. A 283 block with a 327 stroke (and pistons to match bore and stroke) is a 307.

As Don stated because of their short stroke they make lots of horsepower at 8,600 RPM but very little torque (same problem with the 302). If you can get stiff enough valve springs to get past 8,600 you will discover that the rod bolts are it's next weakest link.

Used to scatter one a week back in the early sixties (also went through three scatter shields as the stock fly wheel often came apart about the same time).

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post #7 of 16 (permalink) Old Feb 9th, 19, 09:57 AM
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Re: 283

Quote:
As Don stated because of their short stroke they make lots of horsepower at 8,600 RPM but very little torque (same problem with the 302). If you can get stiff enough valve springs to get past 8,600 you will discover that the rod bolts are it's next weakest link.
True that. Never have found the motor's limit but my personal Redline is about 7500. Looking back I should have built something else but 383 really had not arrived back then.
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68 302 M20 - 85 IROC Z
The older I get the faster I was.
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post #8 of 16 (permalink) Old Feb 9th, 19, 05:01 PM
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Re: 283

Great little motor, first motor I ever built (well, assembled) was a 283 for my first car a 68 Camaro. I assure you it was plenty quick especially for a 17 year old. It beat lots of cars that people assumed would be faster and the same is likely still is true.
The only issue now is they are like hens teeth anymore and cost to rebuild is going to likely be higher than a similar small block. 283 specific parts are going to be less readily available for sure.

Sean

1968 rs with an old school 354" SB2.2 pump gas motor.

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post #9 of 16 (permalink) Old Feb 9th, 19, 08:00 PM
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Re: 283

The 283 is a fun little engine. If you can get it for cheap and its in good running condition, I'd say go for it. I just wouldn't spend much money for it. I had one that ran good and I think I sold it for $700 as a complete running engine, just to give you an idea. They take all the normal small block speed parts just like a 350. You are limited to using heads that were designed to work with the small bore engines, such as the 305. You can't (well, shouldn't) use 302, 327, 350 or 400 heads because the chambers are larger than the cylinder bore of the 283. A great upgrade for the 283 is to bolt on 305HO heads that were found on the 80's IROC-Z camaros, trans ams and Monte Carlo SS 305 engines. The -416 or -601 castings are the ones you want, and often they can be had for cheap. I scored a set of 416's a couple years ago for $20 off craigslist. The 305 HO heads have small chambers, but flow better than the original 283 "power pack" heads and have bigger valves too. Put the 283 together with some HO 305 heads, a mild cam, headers, performer intake and a 500 or 600 cfm carb and you should have a good little mill that really likes to rev and makes good power. Then you can always upgrade the short block to a 350 and re-use the heads and all the other parts. Remember that a cam will "act" bigger in a 283 than the same cam in a 350, so I would stay on the mild side when choosing a cam for the 283.

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post #10 of 16 (permalink) Old Feb 9th, 19, 08:09 PM
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Re: 283

One good thing about 283's, they will rev to the moon due to the short stroke and light weight pistons. I have run several of mine to 8'g+ with only a factory Duntov cam and weak little stock factory valve springs. Can't see why you wouldn't be able to do the same.

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post #11 of 16 (permalink) Old Feb 9th, 19, 08:18 PM
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Re: 283

You can make a decent amount of horsepower in a 283, but only so much (there's no substitute for cubic inches). If you're planning on just having something to drive around, its a pretty good motor. If you want something that can really go, then a 350 or bigger is probably a good choice. 327's are getting hard to find decent pistons for, so unless you already have one (like me) I'd go with an engine that's easier to get parts for.
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post #12 of 16 (permalink) Old Feb 11th, 19, 03:22 AM
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Re: 283

I had a 283 with factory dual 4's in a 61 vette. Seemed peppy enough, but never really "got on it" due to the goofy small tires that GM had on those early vettes.

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post #13 of 16 (permalink) Old Feb 13th, 19, 06:51 PM
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Had to comment about the 283..clearly one of the best engines ever designed and manufactured by GM. Not only was it used to power cars it was converted to marine applications in the 60s by Flagship Marine..I was 11 years old when I first tore one down in my dads 1961 Owens cabin cruiser by using a motors repair manual..Salt water had rotted the head gaskets causing water to seep in the cylinders and crankcase..The 283 was so well designed and bullet proof I was able to put it back together by memory..It ran effortlessly not skipping a beat not to mention pushing that heavy wood boat along at 27mph at 4200 RPM..Also, it sounded awesome with the straight pipes flowing sea water..
July of 1975 then a junior in high school I purchased a 69 Camaro Z28 DZ302 / Daytona Yellow / 4 speed M21 / 411 Eaton posi gear..This car was the real deal and at 17 years old I thought who I was..Well, s**t happens and the engine blew..A neighbor who was a car guy had a 283 in need of a home and rebuild so I elected to take it off his hands and have it stroked 30 over with TRW 12.1 pop up pistons in addition to a pretty aggressive cam w/solid lifters.This former 283 was now a 301 / 490 + hp which red lined at 9000 RPM..
The original DZ302 I had rebuilt and eventually put it back in the car where it belonged..Unfortunatly I sold the Z in 1978 and it was totaled by the new owner. Never getting over the loss of the car 15 years ago I purchased a stock numbers matching 69 Camaro SS X11 trim / Hugger Orange / 350/325 / 4 speed M22 Rock crusher w/410 Richmond posi gear..It is a head turner but the 350 doesn’t compare to the torked up 283 and 302...Thanks for reading..
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post #14 of 16 (permalink) Old Feb 13th, 19, 07:09 PM
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Re: 283

I'd max out the cubes and go with something like a 383 possibly not bored to the max. Unless you plan to rev it high, more cubes make more sense.
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post #15 of 16 (permalink) Old Feb 13th, 19, 10:02 PM
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Re: 283

I grew up in the '70's. We have much better heads, cams, etc., now. If you want to stay with the old parts, build the 283. If you want it to make more power, build something bigger.

'69 Camaro - 429 SBC Dart Iron Eagle 9.325" block, Crower crank, Crower 6" billet rods, Ross pistons (10:1), Total Seal rings, AFR 245 heads, T&D steel body shaft rockers, Cloyes Timing set, custom ground 4-7 swap solid roller 274/286 @ .050" with .704" lift, Dart single plane, Holley Dominator EFI on E85, Injector Dynamics ID2000 Injectors, Stef's #1705R oil pan, F2 Procharger, Lemons 2" primary 4" collector, ATI 9" blower converter
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