Buying a 454 out of a 79 Suburban with Low miles, any clue on horsepower? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

CrashPro993 · 07-10-2008, 05:31 PM

Just curious on HP and TQ this engine may make stock. Trying to get a good baseline. Any idea where I can find this info?

Thanks guys!

cdowns · 07-10-2008, 05:45 PM

factory service manual or manuals like motors or chiltons will give you an idea

my best guess would be around 230hp and maybe 350torque

CrashPro993 · 07-10-2008, 05:49 PM

Thats about what I was thinking, appreciate you getting back with me so quick.

CrashPro993 · 07-10-2008, 05:59 PM

Found it finally! 245hp @ 4000 380tq @ 2500 with 7.6-1 Comp. Ratio

You were close cdowns

72highlander · 07-10-2008, 07:19 PM

i looked for it too, i'm surprised it made that in the height of smog and low compression. should be fairly easy to bump that up though.

67_C-30 · 07-10-2008, 07:45 PM

My book says (old 1979 MOTOR'S manual) 210 HP and 340 TQ. This pic says the same thing. Cdowns is was closer than you thought!

72highlander · 07-10-2008, 07:55 PM

i was thinking closer to that 200 mark

haysonj · 07-10-2008, 08:42 PM

Quote:

Originally Posted by 72highlander

i was thinking closer to that 200 mark

My book says 205 for LD and 210 for HD in 79 it goes up in later years.

67_C-30 · 07-10-2008, 08:51 PM

Quote:

Originally Posted by haysonj

My book says 205 for LD and 210 for HD in 79 it goes up in later years.

I just looked at that ad again, and it confirms that also. It has 205 HP and 335TQ for the light duty.

55dude · 07-10-2008, 09:11 PM

the heads on that vintage motor are extremely restricted! pretty much junk but rest of motor is ok.

67_C-30 · 07-10-2008, 10:00 PM

Yep, the old imfamous peanut heads. They are fine for street but suck a performance head.

CrashPro993 · 07-11-2008, 09:06 AM

Awesome guys, I appreciate the help!

07-10-2008, 05:31 PM	#1
CrashPro993 Registered 71 GMC Owner Join Date: Jun 2008 Location: Tulsa, OK Posts: 70	Buying a 454 out of a 79 Suburban with Low miles, any clue on horsepower? Just curious on HP and TQ this engine may make stock. Trying to get a good baseline. Any idea where I can find this info? Thanks guys! __________________ Nolz Project 71 http://67-72chevytrucks.com/vboard/s...d.php?t=295907

07-10-2008, 05:45 PM	#2
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Buying a 454 out of a 79 Suburban with Low miles, any clue on horsepower? factory service manual or manuals like motors or chiltons will give you an idea my best guess would be around 230hp and maybe 350torque __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

07-10-2008, 05:49 PM	#3
CrashPro993 Registered 71 GMC Owner Join Date: Jun 2008 Location: Tulsa, OK Posts: 70	Re: Buying a 454 out of a 79 Suburban with Low miles, any clue on horsepower? Thats about what I was thinking, appreciate you getting back with me so quick. __________________ Nolz Project 71 http://67-72chevytrucks.com/vboard/s...d.php?t=295907

07-10-2008, 05:59 PM	#4
CrashPro993 Registered 71 GMC Owner Join Date: Jun 2008 Location: Tulsa, OK Posts: 70	Re: Buying a 454 out of a 79 Suburban with Low miles, any clue on horsepower? Found it finally! 245hp @ 4000 380tq @ 2500 with 7.6-1 Comp. Ratio You were close cdowns __________________ Nolz Project 71 http://67-72chevytrucks.com/vboard/s...d.php?t=295907 Last edited by CrashPro993; 07-10-2008 at 06:00 PM.

07-10-2008, 07:19 PM	#5
72highlander Sophomore Member Join Date: Jul 2006 Location: brownwood, tx Posts: 927	Re: Buying a 454 out of a 79 Suburban with Low miles, any clue on horsepower? i looked for it too, i'm surprised it made that in the height of smog and low compression. should be fairly easy to bump that up though. __________________ 1972 Chevrolet Highlander SWB 1972 Custom Deluxe 3/4 2WD 60k miles these trucks don't need vacuum gauges cause they don't suck! two wrongs don't make a right, but three rights do make a left all i want is a little more than i'll ever get it's better to be judged by 12 than to be carried by 6

07-10-2008, 07:45 PM	#6
67_C-30 I have a radical idea! Join Date: Jan 2005 Location: Sweet Home Alabama! Posts: 6,513	Re: Buying a 454 out of a 79 Suburban with Low miles, any clue on horsepower? My book says (old 1979 MOTOR'S manual) 210 HP and 340 TQ. This pic says the same thing. Cdowns is was closer than you thought! __________________ '67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435 ‘72 C-10 SWB , 350 4bbl, TH350 '69 C-10 SWB , 250 L6, 3 OTT '69 GMC C3500, dump truck, 351 V6, NP435 '84 M1009 CUCV Military Blazer 67 C-30 Turbodiesel build thread http://67-72chevytrucks.com/vboard/s...d.php?t=254096 My trucks http://s226.photobucket.com/albums/d...ediafilter=all Member of the 1-Ton Club! Last edited by 67_C-30; 07-10-2008 at 07:47 PM.

07-10-2008, 07:55 PM	#7
72highlander Sophomore Member Join Date: Jul 2006 Location: brownwood, tx Posts: 927	Re: Buying a 454 out of a 79 Suburban with Low miles, any clue on horsepower? i was thinking closer to that 200 mark __________________ 1972 Chevrolet Highlander SWB 1972 Custom Deluxe 3/4 2WD 60k miles these trucks don't need vacuum gauges cause they don't suck! two wrongs don't make a right, but three rights do make a left all i want is a little more than i'll ever get it's better to be judged by 12 than to be carried by 6

07-10-2008, 09:11 PM	#10
55dude Registered User Join Date: Jan 2007 Location: tacoma wa. Posts: 1,037	Re: Buying a 454 out of a 79 Suburban with Low miles, any clue on horsepower? the heads on that vintage motor are extremely restricted! pretty much junk but rest of motor is ok.

07-10-2008, 10:00 PM	#11
67_C-30 I have a radical idea! Join Date: Jan 2005 Location: Sweet Home Alabama! Posts: 6,513	Re: Buying a 454 out of a 79 Suburban with Low miles, any clue on horsepower? Yep, the old imfamous peanut heads. They are fine for street but suck a performance head. __________________ '67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435 ‘72 C-10 SWB , 350 4bbl, TH350 '69 C-10 SWB , 250 L6, 3 OTT '69 GMC C3500, dump truck, 351 V6, NP435 '84 M1009 CUCV Military Blazer 67 C-30 Turbodiesel build thread http://67-72chevytrucks.com/vboard/s...d.php?t=254096 My trucks http://s226.photobucket.com/albums/d...ediafilter=all Member of the 1-Ton Club!

07-11-2008, 09:06 AM	#12
CrashPro993 Registered 71 GMC Owner Join Date: Jun 2008 Location: Tulsa, OK Posts: 70	Re: Buying a 454 out of a 79 Suburban with Low miles, any clue on horsepower? Awesome guys, I appreciate the help! __________________ Nolz Project 71 http://67-72chevytrucks.com/vboard/s...d.php?t=295907



Register or Log In To remove these advertisements.