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

**Stephen717** · 03-19-2020, 11:54 PM

Ok so I'm talking with a guy who runs derby cars and he has a 327 that he claims spins to 8,000 rpm and has 700 hp, full roller setup, vortex 208 ex 280 int heads, I'm not sure of the claimed torque numbers. He said it only runs for 20 minutes at a time, 30 max and never gets above 130°. Is this guy just trying to blow smoke or can a 327 actually pull off those kinds of numbers. I've never seen one that could pull over 500hp. Pictured is the motor

**jocko** · 03-19-2020, 11:57 PM

Ah, umm... let's see...

No.

**Sheepdip** · 03-20-2020, 06:36 AM

Since he has numbers ask for the dyno print out to back it up. No dyno...no proof, just blow'n smoke.

geezer#99 · 03-20-2020, 08:01 AM

If’n it’s one of them thar super rare 5 bolt main nascar 27’s then them thar numbers are darn close!

tutone · 03-20-2020, 09:07 AM

A more reasonable figure would be possibly 400-425 hp. I'm not sure you could get those numbers from a blown or turbocharged engine with the cubic inch limiting it. I am building a 327 for my 55 now, and maybe, I can squeeze 340 out of it?

chewychevy67 · 03-20-2020, 09:14 AM

Yeah. I am too. I was told before I built mine that the 327 is limiting and expensive to build. I have double into it than I would have in a 350 engine to get hopefully 330 to 350hp. But I wanted a 327.

**Stephen717** · 03-20-2020, 09:28 AM

Thanks for the quick responses, I didn't think the numbers sounded right

**truckster** · 03-20-2020, 09:51 AM

Does he know it's the wrong color?

Ziegelsteinfaust · 03-20-2020, 10:02 AM

The rpm is not out of spec for the right configuration, and 327 are pretty happy at that level.

A guy I used to know owned a dyno shop. A 327 can pull 500 hp NA, but it will not be on nodding terms with street ability. The one he was testing, and tuning laid down 535hp, and something like 340tq. Spun to 8500 rpm, and sounded like Satans chariot at idle. Though it was on note above 4500 rpm.

I asked him about the specs, and he said huge. 12-1 compression, and a 600 lift solid roller cam. With the rockers where the stands bolt to the heads. Not the stud type SBC's have stock. Forgot the proper name.

700hp requires boost of some kind or your fully into nascar spec stuff, and it would need to pull more rpm to work.

https://www.popularmechanics.com/car...ctually-stock/

**bigmac73** · 03-20-2020, 10:42 AM

vortec heads have a intake runner of 170 CC , no way they can put out that much power at those RPM's

rockyrivermark · 03-20-2020, 09:53 PM

Painted ford blue? That alone should tell is he’s full of BS

Myself · 03-20-2020, 10:09 PM

I see a long water pump, small balancer with larger pulleys, and I don't see a dipstick on the driver side...........305 for sure!!

**'68OrangeSunshine** · 03-21-2020, 04:33 AM

Yeah, Ford Blue trips my wire, too. See if you can get the stamped numbers/letters off the block. The 2 or 3 letter code will tell you the factory displacement.

**special-K** · 03-21-2020, 06:12 AM

He's wasting a phenomenal racing motor on derby where a stock engine could just as likely win. I don't know about his numbers, but a 327 has huge potential for the displacement. I know people throw around their 500hp figure like they used to throw around 300hp. I guess that will need to be increased here before too long. I don't know about 327s being so much more expensive to build or hard to get power from. I have one I easily and economically built at 325hp and it cost me $1,300

rsavage · 03-21-2020, 06:32 AM

10,000 rpm 283
https://www.youtube.com/watch?v=s-EuchNoI5M

rsavage · 03-21-2020, 06:35 AM

Here's a 10,000 rpm 283 gasser

https://www.youtube.com/watch?v=OGIz5AZbwrU

03-19-2020, 11:54 PM	#1
Stephen717 Senior Member Join Date: Aug 2016 Location: Loris South Carolina Posts: 428	327 question Ok so I'm talking with a guy who runs derby cars and he has a 327 that he claims spins to 8,000 rpm and has 700 hp, full roller setup, vortex 208 ex 280 int heads, I'm not sure of the claimed torque numbers. He said it only runs for 20 minutes at a time, 30 max and never gets above 130°. Is this guy just trying to blow smoke or can a 327 actually pull off those kinds of numbers. I've never seen one that could pull over 500hp. Pictured is the motor Attached Images

03-19-2020, 11:57 PM	#2
jocko Senior Member Join Date: Oct 2009 Location: Godley, TX Posts: 17,972	Re: 327 question Ah, umm... let's see... No.

03-20-2020, 06:36 AM	#3
Sheepdip Senior Member Join Date: Nov 2018 Location: Waterford California Posts: 2,568	Re: 327 question Since he has numbers ask for the dyno print out to back it up. No dyno...no proof, just blow'n smoke.

03-20-2020, 08:01 AM	#4
geezer#99 Registered User Join Date: Aug 2009 Location: Bowser Posts: 13,667	Re: 327 question If’n it’s one of them thar super rare 5 bolt main nascar 27’s then them thar numbers are darn close!

03-20-2020, 09:07 AM	#5
tutone Registered User Join Date: Mar 2016 Location: hickory, ky Posts: 1,298	Re: 327 question A more reasonable figure would be possibly 400-425 hp. I'm not sure you could get those numbers from a blown or turbocharged engine with the cubic inch limiting it. I am building a 327 for my 55 now, and maybe, I can squeeze 340 out of it? __________________ :My build thread http://67-72chevytrucks.com/vboard/s...d.php?t=807535 1972 K10 swb/1968 Camaro 350/4spd 1955 210 2 dr sedan/1998 RCSB Z71

03-20-2020, 09:14 AM	#6
chewychevy67 Registered User Join Date: Jan 2010 Location: Here Posts: 5,520	Re: 327 question Yeah. I am too. I was told before I built mine that the 327 is limiting and expensive to build. I have double into it than I would have in a 350 engine to get hopefully 330 to 350hp. But I wanted a 327.

03-20-2020, 09:28 AM	#7
Stephen717 Senior Member Join Date: Aug 2016 Location: Loris South Carolina Posts: 428	Re: 327 question Thanks for the quick responses, I didn't think the numbers sounded right

03-20-2020, 09:51 AM	#8
truckster Senior Member Join Date: Jan 2001 Location: Orem, Utah Posts: 7,941	Re: 327 question Does he know it's the wrong color? __________________ I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson

03-20-2020, 10:02 AM	#9
Ziegelsteinfaust Registered User Join Date: Dec 2012 Location: Temple City Posts: 3,609	Re: 327 question The rpm is not out of spec for the right configuration, and 327 are pretty happy at that level. A guy I used to know owned a dyno shop. A 327 can pull 500 hp NA, but it will not be on nodding terms with street ability. The one he was testing, and tuning laid down 535hp, and something like 340tq. Spun to 8500 rpm, and sounded like Satans chariot at idle. Though it was on note above 4500 rpm. I asked him about the specs, and he said huge. 12-1 compression, and a 600 lift solid roller cam. With the rockers where the stands bolt to the heads. Not the stud type SBC's have stock. Forgot the proper name. 700hp requires boost of some kind or your fully into nascar spec stuff, and it would need to pull more rpm to work. https://www.popularmechanics.com/car...ctually-stock/ Last edited by Ziegelsteinfaust; 03-20-2020 at 10:11 AM.

03-20-2020, 10:42 AM	#10
bigmac73 Senior Member Join Date: Mar 2012 Location: Chesapeake, Va Posts: 1,275	Re: 327 question vortec heads have a intake runner of 170 CC , no way they can put out that much power at those RPM's __________________ Mike 72 C-10 Cheyenne off frame resto and Upgraded to 4 wheel disk, Tilt, Dakota Digital Dash / Rear slider. 421 SBC / TH350 3000RPM Stall Progression Ignition /Holley 750 DP/3:73 gear Eaton Limited Slip unit / 2 1/2 exhaust glasspacks

03-20-2020, 09:53 PM	#11
rockyrivermark Registered User Join Date: Apr 2011 Location: Fairview Park, Ohio Posts: 1,031	Re: 327 question Painted ford blue? That alone should tell is he’s full of BS __________________ My build page http://67-72chevytrucks.com/vboard/s...d.php?t=764662 My cabinet building site http://www.cbcabinets.com Last edited by rockyrivermark; 03-21-2020 at 03:53 PM.

03-20-2020, 10:09 PM	#12
Myself Registered User Join Date: Oct 2005 Location: Northern Arkansas Posts: 1,136	Re: 327 question I see a long water pump, small balancer with larger pulleys, and I don't see a dipstick on the driver side...........305 for sure!!

03-21-2020, 04:33 AM	#13
'68OrangeSunshine Senior Member Join Date: Feb 2002 Location: Tucson, AZ USA Posts: 7,350	Re: 327 question Yeah, Ford Blue trips my wire, too. See if you can get the stamped numbers/letters off the block. The 2 or 3 letter code will tell you the factory displacement. __________________ Every 25 years I like to rebuild that 292, whether it needs it or not.

03-21-2020, 06:12 AM	#14
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,858	Re: 327 question He's wasting a phenomenal racing motor on derby where a stock engine could just as likely win. I don't know about his numbers, but a 327 has huge potential for the displacement. I know people throw around their 500hp figure like they used to throw around 300hp. I guess that will need to be increased here before too long. I don't know about 327s being so much more expensive to build or hard to get power from. I have one I easily and economically built at 325hp and it cost me $1,300 __________________ "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 ~

03-21-2020, 06:32 AM	#15
rsavage Registered User Join Date: Aug 2009 Location: Alden NY Posts: 2,705	Re: 327 question 10,000 rpm 283 https://www.youtube.com/watch?v=s-EuchNoI5M __________________ 1961 C1 Corvette 1959 El Camino 350 TPI, 9" 4 w disc 69 Blazer K5 - sold July '20 2021 Durango RT 5.7



Register or Log In To remove these advertisements.

03-21-2020, 06:35 AM	#16
rsavage Registered User Join Date: Aug 2009 Location: Alden NY Posts: 2,705	Re: 327 question Here's a 10,000 rpm 283 gasser https://www.youtube.com/watch?v=OGIz5AZbwrU __________________ 1961 C1 Corvette 1959 El Camino 350 TPI, 9" 4 w disc 69 Blazer K5 - sold July '20 2021 Durango RT 5.7

Register or Log In To remove these advertisements.