73 454, pickup engine info please - The 1947 - Present Chevrolet & GMC Truck Message Board Network

veltex · 02-01-2004, 07:35 PM

Anyone out there up on details of 73 454s in pickups? What were the horsepower options, comp ratios, head castings, block castings, etc. any info helpful, starting to look in wrecking yards for BB chevys to start a build up on, and would like to pick a good one, super high performance not neccesary, but very good would be nice, I would like to stay with oval port, thats what I am running now. Just asking about 73 because I spotted one in a camper special, door jamb said early 73, had a 454 badge in grill, didnt see much else, thanks

lukecp · 02-01-2004, 07:54 PM

HP would have been 245, tourqe 375. Both rated Net

stepside454 · 02-01-2004, 07:56 PM

Yellow just beat me to it. Same #s as my 75 454 in my truck.
8.1:1 compression, good oval port heads.

bagged91 · 02-01-2004, 11:40 PM

Not sure if it's the same as the 454 I had in my 76 CC dually but I can tell you that mine runs STRONG!!!!! I put that big dually sideways on a 15MPH roll just by punchin' it and it smoked the tires all the way into 3rd.... LOT'S of power. My motor only had a mild rebuild on it(not punched out either) with an RV grind cam.

veltex · 02-02-2004, 12:39 AM

thanks guys, I dont need one yet, but some day will need a new motor for my 68. Maybe I will take a closer look, and find out more about it. 245 doesnt seem like much hp, torq sounds good, but if a guy was going to redo it anyway, 100 more hp is do-able right?

stepside454 · 02-02-2004, 12:54 AM

Velt, real easy. My 454 is a stock bottom end with a real mild cam, Performer intake, 770 Holley, & shorty headers.
Desktop Dyno says 351HP @ 5000 RPMs & 372 ft. lbs @ 4500 RPMs. Id say thats pretty realistic .

02-01-2004, 07:35 PM	#1
veltex Registered User Join Date: Oct 2003 Location: Idaho Posts: 257	73 454, pickup engine info please Anyone out there up on details of 73 454s in pickups? What were the horsepower options, comp ratios, head castings, block castings, etc. any info helpful, starting to look in wrecking yards for BB chevys to start a build up on, and would like to pick a good one, super high performance not neccesary, but very good would be nice, I would like to stay with oval port, thats what I am running now. Just asking about 73 because I spotted one in a camper special, door jamb said early 73, had a 454 badge in grill, didnt see much else, thanks __________________ beater 65 gmc at the moment

02-01-2004, 07:54 PM	#2
lukecp Formerly yellow72custom Join Date: May 2001 Location: Austin, TX Posts: 7,531	HP would have been 245, tourqe 375. Both rated Net __________________ '72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg

02-01-2004, 07:56 PM	#3
stepside454 Registered User Join Date: Nov 2003 Location: st. louis area Posts: 1,551	Yellow just beat me to it. Same #s as my 75 454 in my truck. 8.1:1 compression, good oval port heads. __________________ 75 GMC C-15 short/step factory 454, lowered

02-01-2004, 11:40 PM	#4
bagged91 Out draggin' Join Date: Jan 2004 Location: Pitman,NJ Posts: 1,574	Not sure if it's the same as the 454 I had in my 76 CC dually but I can tell you that mine runs STRONG!!!!! I put that big dually sideways on a 15MPH roll just by punchin' it and it smoked the tires all the way into 3rd.... LOT'S of power. My motor only had a mild rebuild on it(not punched out either) with an RV grind cam. __________________ 91 GMC Xcab LB-Bags/bd/caddy clip SOLD 72 C10 Cheyenne Super LWB SOLD 92 GMC K1500 Burb 72 C10 Burb (ex. Cheesewagon)SOLD 72 C20 Burb parts truck 71 C10 Burb "project"

02-02-2004, 12:39 AM	#5
veltex Registered User Join Date: Oct 2003 Location: Idaho Posts: 257	thanks guys, I dont need one yet, but some day will need a new motor for my 68. Maybe I will take a closer look, and find out more about it. 245 doesnt seem like much hp, torq sounds good, but if a guy was going to redo it anyway, 100 more hp is do-able right? __________________ beater 65 gmc at the moment

02-02-2004, 12:54 AM	#6
stepside454 Registered User Join Date: Nov 2003 Location: st. louis area Posts: 1,551	Velt, real easy. My 454 is a stock bottom end with a real mild cam, Performer intake, 770 Holley, & shorty headers. Desktop Dyno says 351HP @ 5000 RPMs & 372 ft. lbs @ 4500 RPMs. Id say thats pretty realistic . __________________ 75 GMC C-15 short/step factory 454, lowered

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