Big Block built complete and dyno tested - The 1947 - Present Chevrolet & GMC Truck Message Board Network

70' · 06-18-2016, 10:14 AM

Built this beauty for my 1970 Chevy shortbed 4x4 project. Bored to. 468 ci. Made 477 hp and 575 ft lbs of torque.

70' · 06-18-2016, 10:15 AM

On the Dyno

70' · 06-18-2016, 10:17 AM

Dyno 2

**68bowtie** · 06-18-2016, 10:17 AM

that's a beauty!

Redline novdog · 06-18-2016, 10:19 AM

looks sweet! what kind of cyl. heads you using?

70' · 06-18-2016, 10:23 AM

They are cast heads with the big breather valves in them. Didn't really need to run aluminum to get to those numbers.

70' · 06-18-2016, 10:25 AM

Air gap intake

Redline novdog · 06-20-2016, 03:10 PM

Ok guess I should have been more specific. What casting # heads,oval/rectangular port? I'm in the process on putting together another set of 353049 oval ports. I read you put(big breather valves) in are they bigger than 2.19/1.88's .I would like to try and stuff 2.25 intake valves in this set , but hesitant?

davepl · 06-20-2016, 03:14 PM

I have a set of Trick Flow 340 Rectangular ports that I'm not using if anyone wants to go hardcore!

Redline novdog · 06-20-2016, 04:49 PM

Not Quite sure why your not using those. look very good. I have not gone into the 6,000 rpm plus on a big block yet so don't really need the rectangle ports. Someone else might be drooling though! I'm after house and stump pulling torque!

ptc · 06-20-2016, 05:11 PM

Quote:

Originally Posted by Redline novdog

Not Quite sure why your not using those. look very good. I have not gone into the 6,000 rpm plus on a big block yet so don't really need the rectangle ports. Someone else might be drooling though! I'm after house and stump pulling torque!

Then you havent experienced life yet!!!! START LIVING!!!!!

all joking aside, I have 990 rect port 2.19/188 valved iron heads on a 496 and its doing just over 700hp, 656 tq at 6400. I run it to 6900 in a 18' flatbottom boat WOT.... !

LIVING LIFE!

davepl · 06-20-2016, 05:41 PM

Quote:

Originally Posted by Redline novdog

Not Quite sure why your not using those. look very good. I have not gone into the 6,000 rpm plus on a big block yet so don't really need the rectangle ports. Someone else might be drooling though! I'm after house and stump pulling torque!

This was for screaming power at the top end on a 500+ inch motor with a blower, definitely a different application! I'd recommend oval ports for 95% of applications too.

Redline novdog · 06-21-2016, 03:36 PM

Sorry for high jacking your thread,but love those big block Chevy's. still wondering what casting and valve size?? if it's a secret then tell me so!
As for PTC I have ridden in a flat bottom v-drive with a healthy SBC ! like riding a paddleboard with a nitro blown Hemi.That swimsuit was ruined!

**70cst** · 06-22-2016, 01:35 AM

Very nice ...

06-18-2016, 10:14 AM	#1
70' Registered User Join Date: Nov 2014 Location: Dickinson, ND Posts: 197	Big Block built complete and dyno tested Built this beauty for my 1970 Chevy shortbed 4x4 project. Bored to. 468 ci. Made 477 hp and 575 ft lbs of torque. Attached Images

06-18-2016, 10:15 AM	#2
70' Registered User Join Date: Nov 2014 Location: Dickinson, ND Posts: 197	Re: Big Block built complete and dyno tested On the Dyno Attached Images

06-18-2016, 10:17 AM	#3
70' Registered User Join Date: Nov 2014 Location: Dickinson, ND Posts: 197	Re: Big Block built complete and dyno tested Dyno 2 Attached Images

06-18-2016, 10:17 AM	#4
68bowtie Senior Member Join Date: Jan 2007 Location: Turlock, CA Posts: 8,795	Re: Big Block built complete and dyno tested that's a beauty! __________________ Please help my sister in law with her battle with cancer https://gofund.me/902f6fce Project "C10 Fever" (68 factory black 396 swb) Project "Little Sister" (70 c10 blue original paint refresh) Project "Blue Bomb" (70 c30 blue original paint refresh) SOLD Project "Vitamin C" (71 c10 orange original paint refresh) SOLD

06-18-2016, 10:19 AM	#5
Redline novdog Registered User Join Date: Jan 2012 Location: Washington,Il Posts: 632	Re: Big Block built complete and dyno tested looks sweet! what kind of cyl. heads you using? __________________ It builds on my intelligence when I make a mistake, Boy am I building on it! '67 C-10,'70 Nova SS

06-18-2016, 10:23 AM	#6
70' Registered User Join Date: Nov 2014 Location: Dickinson, ND Posts: 197	Re: Big Block built complete and dyno tested They are cast heads with the big breather valves in them. Didn't really need to run aluminum to get to those numbers.

06-18-2016, 10:25 AM	#7
70' Registered User Join Date: Nov 2014 Location: Dickinson, ND Posts: 197	Re: Big Block built complete and dyno tested Air gap intake Attached Images

06-20-2016, 03:10 PM	#8
Redline novdog Registered User Join Date: Jan 2012 Location: Washington,Il Posts: 632	Re: Big Block built complete and dyno tested Ok guess I should have been more specific. What casting # heads,oval/rectangular port? I'm in the process on putting together another set of 353049 oval ports. I read you put(big breather valves) in are they bigger than 2.19/1.88's .I would like to try and stuff 2.25 intake valves in this set , but hesitant? __________________ It builds on my intelligence when I make a mistake, Boy am I building on it! '67 C-10,'70 Nova SS

06-20-2016, 03:14 PM	#9
davepl Registered User Join Date: Aug 2006 Location: Redmond, WA Posts: 6,332	Re: Big Block built complete and dyno tested I have a set of Trick Flow 340 Rectangular ports that I'm not using if anyone wants to go hardcore! Attached Images __________________ 1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible

06-20-2016, 04:49 PM	#10
Redline novdog Registered User Join Date: Jan 2012 Location: Washington,Il Posts: 632	Re: Big Block built complete and dyno tested Not Quite sure why your not using those. look very good. I have not gone into the 6,000 rpm plus on a big block yet so don't really need the rectangle ports. Someone else might be drooling though! I'm after house and stump pulling torque! __________________ It builds on my intelligence when I make a mistake, Boy am I building on it! '67 C-10,'70 Nova SS

06-21-2016, 03:36 PM	#13
Redline novdog Registered User Join Date: Jan 2012 Location: Washington,Il Posts: 632	Re: Big Block built complete and dyno tested Sorry for high jacking your thread,but love those big block Chevy's. still wondering what casting and valve size?? if it's a secret then tell me so! As for PTC I have ridden in a flat bottom v-drive with a healthy SBC ! like riding a paddleboard with a nitro blown Hemi.That swimsuit was ruined! __________________ It builds on my intelligence when I make a mistake, Boy am I building on it! '67 C-10,'70 Nova SS

06-22-2016, 01:35 AM	#14
70cst Senior Member Join Date: Feb 2001 Location: New Madison, Ohio Posts: 21,373	Re: Big Block built complete and dyno tested Very nice ... __________________ A husband can be right...or...A husband can be happy. 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder!



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