The 327 ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

gmcdude · 08-16-2009, 10:47 PM

In this new truck, it's got a 327, mild cam, holly carb. I've had a 350 in the past. Will i like the 327 ? Or will I be able to tell the difference.

Jacfourteen · 08-16-2009, 10:54 PM

I've heard the 327's will rev higher/smoother.

redbaron69 · 08-16-2009, 11:01 PM

one of the best if not the best SBC ever built, you should be happy

**LockDoc** · 08-16-2009, 11:30 PM

-
I have two 327's and I am happy with the performance of both of them.

LockDoc

BAGNDRAGIT · 08-16-2009, 11:35 PM

i love my 327. and yes, they do rev a little higher, you wont be dissappointed!

Jbham88 · 08-16-2009, 11:57 PM

I just picked mine up friday, Im curious myself to see if im going to like it or not any suggestions on headers? im going to have a 3in drop in the front

**GR8-68** · 08-17-2009, 04:22 AM

bought one off craigslist yesterday, have owned three of them in the past and love them you should be pleased with its performance

**special-K** · 08-17-2009, 05:05 AM

I`m building my`67 swb with what I have on a low budget.But,I found a 327 and just had to have it.I already had a 350 from a`71.They are as great a motor as the 350 with added vintage cool factor.They have different dynamics and yes they like to scream,without giving up bottom end.

vectorit · 08-17-2009, 06:46 AM

I much prefer the 327 over the 350.

You will be pleased to run the 327.

Shaky · 08-17-2009, 07:09 AM

350: 4.00 bore x 3.48 stroke

327: 4.00 bore x 3.25 stroke

The 327 likes to spin more than the 350. My brother had a '68 C10 with a factory 327. After a rebuild/hop-up that thing was a blast. At 7000 rpm it made you grit your teeth - but it never came apart.

I wish I had pictures of the looks on people's faces when this beat-up old truck came screaming past them with that hairy-cammed 327.

**Stocker** · 08-17-2009, 09:08 AM

IIRC, Chevy changed from 327 to 350 to gain back a bit of torque that was lost when they first began choking down engines with the earliest forms of pollution control. I've had a few 327s in different states of tune. It's a really sweet engine!

big_al_71 · 08-17-2009, 09:12 AM

Had a 327 in my 65 elky and it was a screamer....if set up "CORRECT" you will be happy with it..

**special-K** · 08-17-2009, 09:23 PM

Yeah,all cubes went bigger to compensate for choking motors down with superficial emissions equipment.Then,they just sucked more gas which meant more emissions.

Ben IV · 08-17-2009, 10:09 PM

Also ive been told many times that 327 blocks had a higher nickel content that and the cylinder walls are thicker. The early ones had a small journal crank and the later ones have a large journal same as a 350.

**special-K** · 08-17-2009, 10:37 PM

The bore is the same as 350s,so the cylinder walls are the same thickness.The large journal 327 I have from a`68 truck is the same block as the SS350 and Z/28 Camaros.

Dingfodgy · 08-17-2009, 10:48 PM

In the realm of vintage Detroit power the only small block I would prefer over the 327 would be a DZ302.....but given the fact that I'll $h!t purple twinkies before I score one of those- I'll stick to making fond memories with the 327 in my SWB project.

ERASER5 · 08-18-2009, 12:04 AM

Quote:

Originally Posted by Dingfodgy

I'll $h!t purple twinkies before ...

BAGNDRAGIT · 08-18-2009, 12:22 AM

partially related hi-jack....

did the large journal crank come with a center bolt for the harmonic balancer??

and if so are they interchangeable? or do you have to line bore the crank journals?

or should i just go and get my small journal drilled?????

i want to keep my 327, i just would like a little more compatibility when it comes to balancers..

turp mcspray · 08-18-2009, 10:13 AM

Not to knock the 327, but having a shorter stroke will move the powerband UP, which unfortunately means LESS torque on the very bottom end. All things being equall, a longer stroke equalls more low end torque. Once again, I'm not knocking the 327. I have run both in the same vehicle, and was deffinitely able to tell a difference in low end torque.

AJLChase · 08-18-2009, 05:29 PM

Are you all in favor of the 327 because of a) reliability b)functioning c)performance? As from what I hear there is no real definitive reason as to why the 327 is good, other then simply "because I like it, and so should you" Not trying to start a war, I too have a 327 and am curious as to what makes it so favored by all of you. I know pretty much nothing about engines, so bare with me lol

vectorit · 08-18-2009, 05:33 PM

The shorter stroke.

turp mcspray · 08-18-2009, 09:02 PM

If you want an engine to turn high rpms, the shorter stroke has a better "rod length to stroke ratio". The 302...even better. So if you want to turn 7000 rpm for long lengths of time, a short stroke is what you want. If you want to maximize torque at a low rpm (which is very desireable on the street) you want as much stroke as possible. (but will have to trade off high rpm horsepower) It all depends on WHERE you want your engine to make power, and WHAT your intended usage will be. We all would like an engine that spins to 7500 and makes tire shreading torque at 1500. (If anyone figures out how to do this PLEASE let me know! LOL!) Everything is a compromise so to speak.

**Stocker** · 08-18-2009, 10:06 PM

Chevy made 327s in a wide variety of configurations, and they could be as different as chalk & cheese. They were the performance engine of choice when I was growing up, and I've owned a couple nice ones, so they have always been just a bit special to me. Having said that, they may be unable to hold a candle to today's crop of SBCs, whether factory or modified.

08-16-2009, 10:47 PM	#1
gmcdude Registered User Join Date: Jul 2009 Location: Abingdon, Virginia Posts: 300	The 327 ? In this new truck, it's got a 327, mild cam, holly carb. I've had a 350 in the past. Will i like the 327 ? Or will I be able to tell the difference.

08-16-2009, 10:54 PM	#2
Jacfourteen Big Red - Now its a SWB! Join Date: Jun 2009 Location: Oroville, Ca Posts: 1,624	Re: The 327 ? I've heard the 327's will rev higher/smoother. __________________ 68 3/4 ton (Project)-350 Small Block, .030 over, 10:1 comp, 3998993 heads, C3BX edelbrock intake, comp cams XE268, Holley 670 SA, long tube headers, dual flow 40's, E-fan, Alum rad, currently under the knife getting shortened and bagged build thread 41 3/4 ton (wife's)-flatbed, fully restored to original 01 Tahoe LT 4WD (my daily driver)-Magnaflow Muffler, Rollin on 22's 02 Ford Mustang Convertable (Wife's Car)-Flowmaster 50, Clear corners, Intake, sittin on 18's

08-16-2009, 11:01 PM	#3
redbaron69 Registered User Join Date: Jan 2009 Location: marion nc Posts: 588	Re: The 327 ? one of the best if not the best SBC ever built, you should be happy __________________ 69 short fleet 350/350 "under construction" 70 short step 307/3 speed

08-16-2009, 11:30 PM	#4
LockDoc The Older Generation Join Date: Aug 2006 Location: Montezuma, Iowa Posts: 25,852	Re: The 327 ? - I have two 327's and I am happy with the performance of both of them. LockDoc __________________ Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 -

08-16-2009, 11:35 PM	#5
BAGNDRAGIT Just Not Low Enough! Join Date: Mar 2009 Location: Phoenix, AZ Posts: 525	Re: The 327 ? i love my 327. and yes, they do rev a little higher, you wont be dissappointed! __________________ NEED ELECTRICAL HELP? ASK ME! 67-72 Full Wiring Diagrams Lots Of Info, TAKE A LOOK 1967 Chevy C-10 Shortbox Bagged 327 4spd Previous: 1971 Chevy C-10 Short Sep I6 Auto (Traded) 1973 Chevy C-20 THE REDNECK BATTLE TRUCK 2001 Chevy Silverado 2Dr 5.3L Shortbox. R.I.P. 1969 Volkswagen Bug This is my first meeting, I have a horsepower problem.

08-16-2009, 11:57 PM	#6
Jbham88 Registered User Join Date: Jun 2009 Location: Hattiesburg Mississippi Posts: 64	Re: The 327 ? I just picked mine up friday, Im curious myself to see if im going to like it or not any suggestions on headers? im going to have a 3in drop in the front __________________ 1986 GMC 4x4

08-17-2009, 04:22 AM	#7
GR8-68 Senior Member Join Date: Jun 2009 Location: Belews Creek , NC Posts: 4,220	Re: The 327 ? bought one off craigslist yesterday, have owned three of them in the past and love them you should be pleased with its performance

08-17-2009, 05:05 AM	#8
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: The 327 ? I`m building my`67 swb with what I have on a low budget.But,I found a 327 and just had to have it.I already had a 350 from a`71.They are as great a motor as the 350 with added vintage cool factor.They have different dynamics and yes they like to scream,without giving up bottom end. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

08-17-2009, 06:46 AM	#9
vectorit What? Join Date: Jun 2007 Location: Southern California Posts: 7,617	Re: The 327 ? I much prefer the 327 over the 350. You will be pleased to run the 327. __________________ Chris 1968 K20 Suburban 1972 K10 LWB PU

08-17-2009, 07:09 AM	#10
Shaky Six in a row makes it go... Join Date: Mar 2009 Location: Vacationland: Maine Posts: 1,346	Re: The 327 ? 350: 4.00 bore x 3.48 stroke 327: 4.00 bore x 3.25 stroke The 327 likes to spin more than the 350. My brother had a '68 C10 with a factory 327. After a rebuild/hop-up that thing was a blast. At 7000 rpm it made you grit your teeth - but it never came apart. I wish I had pictures of the looks on people's faces when this beat-up old truck came screaming past them with that hairy-cammed 327. __________________ 67 C20 long step resto: http://67-72chevytrucks.com/vboard/s...d.php?t=342086 66 C10 long step build: http://67-72chevytrucks.com/vboard/s...=1#post3814790 CT to Alaska in a 67 C10: http://67-72chevytrucks.com/vboard/s...d.php?t=399224 “The height of sophistication is simplicity." - Clare Boothe Luce

08-17-2009, 09:08 AM	#11
Stocker 20' Daredevil (Ret) Join Date: May 2003 Location: Jefferson State Posts: 13,731	Re: The 327 ? IIRC, Chevy changed from 327 to 350 to gain back a bit of torque that was lost when they first began choking down engines with the earliest forms of pollution control. I've had a few 327s in different states of tune. It's a really sweet engine! __________________ - Mike - 1972 K20 LWB 350/350/205 RIP El Jay

08-17-2009, 09:12 AM	#12
big_al_71 Registered User Join Date: Jun 2008 Location: South Florida Posts: 11,375	Re: The 327 ? Had a 327 in my 65 elky and it was a screamer....if set up "CORRECT" you will be happy with it.. __________________ Get your facts first, and then you can distort them as much as you please!!!!!. Sylvester's build thread >>>http://67-72chevytrucks.com/vboard/s...ht=big+rebuild

08-17-2009, 09:23 PM	#13
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: The 327 ? Yeah,all cubes went bigger to compensate for choking motors down with superficial emissions equipment.Then,they just sucked more gas which meant more emissions. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

08-17-2009, 10:09 PM	#14
Ben IV Registered User Join Date: Dec 2006 Location: Glenpool OK Posts: 255	Re: The 327 ? Also ive been told many times that 327 blocks had a higher nickel content that and the cylinder walls are thicker. The early ones had a small journal crank and the later ones have a large journal same as a 350. __________________ 70 GMC custom short bed conversion 69 GMC panel truck

08-17-2009, 10:37 PM	#15
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: The 327 ? The bore is the same as 350s,so the cylinder walls are the same thickness.The large journal 327 I have from a`68 truck is the same block as the SS350 and Z/28 Camaros. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~



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08-17-2009, 10:48 PM	#16
Dingfodgy Lemme show you something!! Join Date: Apr 2007 Location: St.Helens, OR. Posts: 876	Re: The 327 ? In the realm of vintage Detroit power the only small block I would prefer over the 327 would be a DZ302.....but given the fact that I'll $h!t purple twinkies before I score one of those- I'll stick to making fond memories with the 327 in my SWB project. __________________ '67 CST-10 LWB ("Crusty") SOLD '67 GMC SWB ("Murdock") 2000 K1500 Suburban ("Betty") '95 BMW 325i ("Joy")

08-18-2009, 12:22 AM	#18
BAGNDRAGIT Just Not Low Enough! Join Date: Mar 2009 Location: Phoenix, AZ Posts: 525	Re: The 327 ? partially related hi-jack.... did the large journal crank come with a center bolt for the harmonic balancer?? and if so are they interchangeable? or do you have to line bore the crank journals? or should i just go and get my small journal drilled????? i want to keep my 327, i just would like a little more compatibility when it comes to balancers.. __________________ NEED ELECTRICAL HELP? ASK ME! 67-72 Full Wiring Diagrams Lots Of Info, TAKE A LOOK 1967 Chevy C-10 Shortbox Bagged 327 4spd Previous: 1971 Chevy C-10 Short Sep I6 Auto (Traded) 1973 Chevy C-20 THE REDNECK BATTLE TRUCK 2001 Chevy Silverado 2Dr 5.3L Shortbox. R.I.P. 1969 Volkswagen Bug This is my first meeting, I have a horsepower problem.

08-18-2009, 10:13 AM	#19
turp mcspray Registered User Join Date: May 2007 Location: Rapid City South Dakota Posts: 2,359	Re: The 327 ? Not to knock the 327, but having a shorter stroke will move the powerband UP, which unfortunately means LESS torque on the very bottom end. All things being equall, a longer stroke equalls more low end torque. Once again, I'm not knocking the 327. I have run both in the same vehicle, and was deffinitely able to tell a difference in low end torque. __________________ Turp Mcspray New life for an old 2wd, farm blazer http://67-72chevytrucks.com/vboard/s...d.php?t=505987 My Blazer build http://67-72chevytrucks.com/vboard/s...d.php?t=342299

08-18-2009, 05:29 PM	#20
AJLChase Registered User Join Date: May 2009 Location: Lincoln, NE Posts: 322	Re: The 327 ? Are you all in favor of the 327 because of a) reliability b)functioning c)performance? As from what I hear there is no real definitive reason as to why the 327 is good, other then simply "because I like it, and so should you" Not trying to start a war, I too have a 327 and am curious as to what makes it so favored by all of you. I know pretty much nothing about engines, so bare with me lol

08-18-2009, 05:33 PM	#21
vectorit What? Join Date: Jun 2007 Location: Southern California Posts: 7,617	Re: The 327 ? The shorter stroke. __________________ Chris 1968 K20 Suburban 1972 K10 LWB PU

08-18-2009, 09:02 PM	#22
turp mcspray Registered User Join Date: May 2007 Location: Rapid City South Dakota Posts: 2,359	Re: The 327 ? If you want an engine to turn high rpms, the shorter stroke has a better "rod length to stroke ratio". The 302...even better. So if you want to turn 7000 rpm for long lengths of time, a short stroke is what you want. If you want to maximize torque at a low rpm (which is very desireable on the street) you want as much stroke as possible. (but will have to trade off high rpm horsepower) It all depends on WHERE you want your engine to make power, and WHAT your intended usage will be. We all would like an engine that spins to 7500 and makes tire shreading torque at 1500. (If anyone figures out how to do this PLEASE let me know! LOL!) Everything is a compromise so to speak. __________________ Turp Mcspray New life for an old 2wd, farm blazer http://67-72chevytrucks.com/vboard/s...d.php?t=505987 My Blazer build http://67-72chevytrucks.com/vboard/s...d.php?t=342299

08-18-2009, 10:06 PM	#23
Stocker 20' Daredevil (Ret) Join Date: May 2003 Location: Jefferson State Posts: 13,731	Re: The 327 ? Chevy made 327s in a wide variety of configurations, and they could be as different as chalk & cheese. They were the performance engine of choice when I was growing up, and I've owned a couple nice ones, so they have always been just a bit special to me. Having said that, they may be unable to hold a candle to today's crop of SBCs, whether factory or modified. __________________ - Mike - 1972 K20 LWB 350/350/205 RIP El Jay Last edited by Stocker; 08-18-2009 at 10:07 PM.

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