327 327 327
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From: MN
Car: 1982 Camaro
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Re: 327 327 327
Why? What's wrong with a 350 or a 400? Those seem easier to find and will perform better if you like acceleration. Is your's an orginal 327 equipped 83z? I can then see your point why you'd want one to keep it because it's rare.
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From: Norwalk, CA
Car: 1983 Z-28
Engine: 5.7 L
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Re: 327 327 327
idk cuz everybody has a 350...and a 327 is rare and no my camaro comes with a 305...and i want a 327 because ur able to rev it up higher...and u dont really need to do to much to it 2 get almost 400 hp out of it...now a 350 u would have to change more and spend more money on it...
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From: Cary, North Carolina
Car: 1992 RS
Engine: Carbed 350
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Re: 327 327 327
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From: JSS Soto, Tallil IRAQ
Car: 87 IROC-Z28
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Re: 327 327 327
idk cuz everybody has a 350...and a 327 is rare and no my camaro comes with a 305...and i want a 327 because ur able to rev it up higher...and u dont really need to do to much to it 2 get almost 400 hp out of it...now a 350 u would have to change more and spend more money on it...
I suggest you do more research and dont rely on what your brothers best friends daddys gran pappy told you about 327's and "camel hump" heads.
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From: MN
Car: 1982 Camaro
Engine: 555 BBC
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Re: 327 327 327
Yes, you will need to investigate a proper engine choice. Have fun looking for the engine the thrill of the hunt some times is greater then the finished project. I have a 396 I could sell you. It's almost 400hp at 5500rpm from the factory and you can spin it to the moon (9000 rpm) to get 600hp out of it if you'd like. That way you only use what you need.
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From: Colorado
Car: 1983 Firebird
Engine: 327
Transmission: 5 speed, stock
Re: 327 327 327
A 327 is still a good engine though. They are alot harder to find. When built right they run out good, in the end it may not be able to out run a 350 or a 400 but if you like it go for it. My 327 is fully built well, sounds great and runs about 375 horsepower. Its great for what I wanted out of it. Everyone gets all hot and bothered over the 327/350 arguement. In the end a higher displacement is going to give you more power with the right set up, however there is nothing stopping anyone from having a 327 that can be faster than a 350 or vice versa.
Last edited by veritas91; Feb 23, 2010 at 02:52 PM.
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
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From: Southern California
Car: 1992 Camaro RS
Engine: 8.0:1 454/Mild Hyd roller/Accel DFI
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Re: 327 327 327
The buildup price will be about the same. The only difference between a 350 and 327 is pistons and crankshaft stroke. The difference would be less than 100 bucks.
I had a 10:1 TPI 327 in my 92 camaro and it ran great. If you compare two engines running the same equipment (heads, cam, headers, intake, carb/efi, etc etc) the engine with more stroke and hence displacement (350) will make more peak torque and the peak will be at a lower rpm. Now if you have better heads and induction to turn the 327 7 8 or 9 thousand rpm it may make more horsepower than a 350 that has less effecient stuff on it. But the end result is the same. If all things are equal more displacement is more torque.
Unless you are limited by price you should go for as much displacement is legally, phisically, and financially possible. Unless maximum performance is not your goal. If 327 cu inches is your goal by all means build on. There is nothing wrong with that.
Remember when building, buying or speculating engine combinations, horsepower is irrelevant. The engine with the highest peak torque and widest power band is the best performing engine. Engines are measured by torque output. Horsepower is torquexrpm/5252. It just means an engine with 500 ft lbs at 3000 rpm is 285 HP and 500 ft lbs at 5000 rpm is 476 HP. Which engine has more peak output? Neither. Their output is exactly the same. All you have to do is gear the car for the rpm range in which it performs.
The guy that thought up the formula for horsepower was using it to figure which steam engine could pull a load out of a mine at the same rate as a pair of horses.
I had a 10:1 TPI 327 in my 92 camaro and it ran great. If you compare two engines running the same equipment (heads, cam, headers, intake, carb/efi, etc etc) the engine with more stroke and hence displacement (350) will make more peak torque and the peak will be at a lower rpm. Now if you have better heads and induction to turn the 327 7 8 or 9 thousand rpm it may make more horsepower than a 350 that has less effecient stuff on it. But the end result is the same. If all things are equal more displacement is more torque.
Unless you are limited by price you should go for as much displacement is legally, phisically, and financially possible. Unless maximum performance is not your goal. If 327 cu inches is your goal by all means build on. There is nothing wrong with that.
Remember when building, buying or speculating engine combinations, horsepower is irrelevant. The engine with the highest peak torque and widest power band is the best performing engine. Engines are measured by torque output. Horsepower is torquexrpm/5252. It just means an engine with 500 ft lbs at 3000 rpm is 285 HP and 500 ft lbs at 5000 rpm is 476 HP. Which engine has more peak output? Neither. Their output is exactly the same. All you have to do is gear the car for the rpm range in which it performs.
The guy that thought up the formula for horsepower was using it to figure which steam engine could pull a load out of a mine at the same rate as a pair of horses.
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From: Cary, North Carolina
Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
Re: 327 327 327
Parts are parts - they all cost the same - no savings with 327 v. 350. Wanna 327? Go for it! But there's nothing magical about the block, other than the fact that everyone's daddy, uncle, granda, etc had one in the day and they all ranted about how great it was. 40 years from now folks will be talking about how much better a LS1 is than whatever the engine of 2050 is (of course by then it may be true - we might be running 12hp solar cell plastic motors by then
).
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From: CO
Car: 1988 rs
Engine: 555BBC; Dart, Lunati, SRP, Howards
Transmission: ATI TH-400
Axle/Gears: 35 spline 9", locker, 3.00's
Re: 327 327 327
i have a 327 for sale, i was going to do the same thing, high rpm power. it has main studs and a factory forged crank.
https://www.thirdgen.org/forums/engi...ort-block.html
https://www.thirdgen.org/forums/engi...ort-block.html
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From: Davenport, Iowa
Car: Still a 3rd Gen
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Transmission: TH350
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Re: 327 327 327
I have one in mine.. don't waste your time. my old 355 made quite a bit more power with similar parts.
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From: Sussex County, NJ
Car: 1994 Z28
Engine: 355 LT1
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Axle/Gears: 3.42
Re: 327 327 327
327 will not outrev a 350 or a 400, anything can be built with a comparable valvetrain, rods, and cam to rev just as high. And it's easier to make power with a bigger motor then it is a smaller motor.
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From: Southern California
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Re: 327 327 327
Did you try ebay, google, racingjunk.com?
You are gonna have to be patient if you want an unmolested 327 nowadays. Make sure the one you buy is after 75. Mine had hipo heads of a 67 that was for leaded gas. It didn't have hardened valve seats so after some of my influence the valve seats let go.
You are gonna have to be patient if you want an unmolested 327 nowadays. Make sure the one you buy is after 75. Mine had hipo heads of a 67 that was for leaded gas. It didn't have hardened valve seats so after some of my influence the valve seats let go.
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
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From: Southern California
Car: 1992 Camaro RS
Engine: 8.0:1 454/Mild Hyd roller/Accel DFI
Transmission: WC T5
Axle/Gears: Stock 1992 open 7.5" 2.73 ratio
Re: 327 327 327
If you don't have to overbore the engine you can rebuild that 350 into a 327. This would be especially desirable if the 350 you have already has a roller camshaft. Does your 350 have stock heads on it? Even if you have to overbore it, its a 331.Nobody is going to question that its a 327. Most people don't know that the all the later 396 engines were actually 402 cu inches. Chevy kept calling them 396's because it was popular at the time. a 327 is really 326 cu inches anyway. 4.0x4.0x.7854x3.25x8=326.7264
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From: Norwalk, CA
Car: 1983 Z-28
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Re: 327 327 327
yes everything is stock on it...ok i found some blocks and i ran the numbers on on them and it comes out 2 b a 327, 350...does this mean u can make a 327 or 350 out of them?...cuz the motor i have now i ran the numbers and it said it was a 350...it didnt say 327,350 it just read 350...
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From: Southern California
Car: 1992 Camaro RS
Engine: 8.0:1 454/Mild Hyd roller/Accel DFI
Transmission: WC T5
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Re: 327 327 327
Heres how small block chevy engines work. There are three small blocks that chevy made. The block with a 4.0 inch bore, the block with a 4.125 inch bore, and the block with a 3.875 inch bore.
The 302,327,350, used the block with a 4.0 inch bore.
The 400 small block used the 4.125 inch bore block.
The block with a 3.875 bore was used in the 305 and I don't know what else. Generally you don't want to decrease bore. It hurts the breathing of the engine and reduces displacement. We rarely built performance engines with this block.
Each block can be bored a maximum of .060 larger than the stock size.
The 302,327,350 block is exactly the same. The only difference is crankshaft stroke. The 302 used a 3 inch stroke, the 327 used a 3.25 inch stroke, and the 350 used a 3.5 inch stroke.
A good engine builder can work a block over to take as much as a 4 inch stroke in a small block chevy block regardless of bore. You can run more than this in a dragster that doesn't need a radiator.
Now you can build anything inbetween you want. The price difference when you are buying aftermarket parts doesn't get crazy until you pass the 3.750 stroke.
The short answer is a 350 block can be built from 301.5 cu inches to 402.1 cu inches without over boring it.
A 400 block can be built from a 320.7 cu inch motor to a 427.6 cu inch motor with no over bore.
If you are gonna run a stock trans and street gearing (2.73-3.23) I would recommend just stroking your 350 to a 377 or 383. If you Absolutely want 327 cu inches just rebuild and destroke your 350. Are you gonna run TPI or a carb on this engine?
The 302,327,350, used the block with a 4.0 inch bore.
The 400 small block used the 4.125 inch bore block.
The block with a 3.875 bore was used in the 305 and I don't know what else. Generally you don't want to decrease bore. It hurts the breathing of the engine and reduces displacement. We rarely built performance engines with this block.
Each block can be bored a maximum of .060 larger than the stock size.
The 302,327,350 block is exactly the same. The only difference is crankshaft stroke. The 302 used a 3 inch stroke, the 327 used a 3.25 inch stroke, and the 350 used a 3.5 inch stroke.
A good engine builder can work a block over to take as much as a 4 inch stroke in a small block chevy block regardless of bore. You can run more than this in a dragster that doesn't need a radiator.
Now you can build anything inbetween you want. The price difference when you are buying aftermarket parts doesn't get crazy until you pass the 3.750 stroke.
The short answer is a 350 block can be built from 301.5 cu inches to 402.1 cu inches without over boring it.
A 400 block can be built from a 320.7 cu inch motor to a 427.6 cu inch motor with no over bore.
If you are gonna run a stock trans and street gearing (2.73-3.23) I would recommend just stroking your 350 to a 377 or 383. If you Absolutely want 327 cu inches just rebuild and destroke your 350. Are you gonna run TPI or a carb on this engine?
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
A 327 would not be emissions legal in your car.
Plus all of the other reasons above why this is wrong-headed.
Being different is code for "spent more money to be slower".
Plus all of the other reasons above why this is wrong-headed.
Being different is code for "spent more money to be slower".
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From: Norfolk VA
Car: 85 Camaro IROC
Engine: 5.7 TPI
Transmission: 700-R4
Axle/Gears: open rear, 3.42 gears
Re: 327 327 327
no.
your BLOCK is a 4" bore block
that means it can be a 302, 327, 350 or 383.
because of the CRANKSHAFT, it is a 350
if you put a different CRANKSHAFT in it, you can make it into a 302, 327, or 383.
technically, you can also make it a 402, but that is prohibitively expensive
the block will not have to be changed
all you have to do is put a new rotating assembly in it.
any one of these will do
http://www.summitracing.com/search/D...n/?Ns=Rank|Asc
your BLOCK is a 4" bore block
that means it can be a 302, 327, 350 or 383.
because of the CRANKSHAFT, it is a 350
if you put a different CRANKSHAFT in it, you can make it into a 302, 327, or 383.
technically, you can also make it a 402, but that is prohibitively expensive
the block will not have to be changed
all you have to do is put a new rotating assembly in it.
any one of these will do
http://www.summitracing.com/search/D...n/?Ns=Rank|Asc
Last edited by RED_DRAGON_85; Feb 24, 2010 at 06:53 PM.
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
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Re: 327 327 327
any one of these will do
http://www.summitracing.com/search/D...n/?Ns=Rank|Asc
http://www.summitracing.com/search/D...n/?Ns=Rank|Asc
http://www.summitracing.com/search/D...Ns=Price%7cAsc
Hmm... 3 kits to choose from $1,939.95 to $2699.95...
How about the 3.48" stroke 350 kits then?
http://www.summitracing.com/search/D...Ns=Price%7cAsc
Hmmm... 168 kits starting from $499.90... Even if we say we want forged pistons just to stay equal, that's 113 kits from $679.90.
Guess which one I'd want to build?
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From: Central,Ohio
Car: 1989 IROC Z28
Engine: 350 4 bolt main carbureted
Transmission: 700r4 w/ 3000 stahl
Axle/Gears: 2.73 posi
Re: 327 327 327
Im in Ohio but i see nice 327's everyday on craigslist. Just know if you buy a complete motor with matching heads [camel humps] it probly wont have bolt holes for you to use your z28 305 accessories[ which also adds to the cost] But I think 327's are cool
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
In order to be emissions-legal (technically), the block and heads would have to be '83-'86 (or CARB-certified replacements), and you'd have to "sell" it to the smog inspector as a B-body 350 "motor change". They aren't likely to check the crank/stroke, but they have been known to check block and head casting #'s.
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From: Central,Ohio
Car: 1989 IROC Z28
Engine: 350 4 bolt main carbureted
Transmission: 700r4 w/ 3000 stahl
Axle/Gears: 2.73 posi
Re: 327 327 327
In order to be emissions-legal (technically), the block and heads would have to be '83-'86 (or CARB-certified replacements), and you'd have to "sell" it to the smog inspector as a B-body 350 "motor change". They aren't likely to check the crank/stroke, but they have been known to check block and head casting #'s.
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From: Sussex County, NJ
Car: 1994 Z28
Engine: 355 LT1
Transmission: T56
Axle/Gears: 3.42
Re: 327 327 327
Re: 327 327 327
hey man, i like your idea of a 327 really dont see them around as much anymore and its a car motor not a truck motor. i have a 327 my self and build the whole thing for under 2k. go to your speed shop and they will set you up with every thing that you need. i also have the camel bumbs on my heads, its not the end of the world with some use of your brain you will figure some thing out. they also make kits for it but i just fabed up some stuff to get mine to work. i would get you pics but i have the motor of the car right now torn down. if you need ne more help with the build of your motor pm me and i can help you with and tell you hoe i did mine. gl to ya have fun wtih..
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From: Southern California
Car: 1992 Camaro RS
Engine: 8.0:1 454/Mild Hyd roller/Accel DFI
Transmission: WC T5
Axle/Gears: Stock 1992 open 7.5" 2.73 ratio
Re: 327 327 327
Wow smog inspectors check casting numbers?! I wouldn't think they would have the knowledge to look at that. Out here they just look the thing over, check for codes and run the sniffer test.
I would imagine a 327 with all the smog equipment would pass the sniffer in a car that originally was a 350. I know you wouldn't be able to a good high rpm cam.
I would imagine a 327 with all the smog equipment would pass the sniffer in a car that originally was a 350. I know you wouldn't be able to a good high rpm cam.
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