What do you guys with them big blocks run - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**GMC-YA68** · 03-29-2004, 05:49 PM

hey i am just a little curious of what u guys with your big blocks run at the track. i was gonna drop a 396 in mine but i didnt have enough money so i went wit some bolt on mods for my sb 327. just wondering how bad i missed out.

**GSFMECH** · 03-30-2004, 01:27 AM

Depends on how much money you have. I ran a 402 in a 71 SWB Cheyenne 10 or 12 years ago. It was a low compresion stocker w/ crap heads and I slipped in a 425 horse 427 solid lifter cam, Torker intake, 780 holley, 1 7/8" headers w/ 400 turbo, 3500 stall w/ 4:11 posi. Had some M-T sportsmans on it. PS,PB, AC, 3950 lbs. Ran 14.25@ 93 mph through the mufflers. Pulled it and put in a 10 to1 454 (LS6 pistons), steel crank, truck rods, balanced and bored w/ deck plates, moly rings, big Crane solid lifter cam w/ roller rockers, oval port open chamber heads that were hogged out. Edelbrock C-396 intake w/ a 850 double pumper. Ran 12.59 @ 102 mph through the mufflers, with a 1.73 60 foot time. The rest of the combo was the same as before. I pulled it and put the motor in a stripped down 69 SWB and ran a terrible wheel spinning 12.25, coulda got it in the 11's easy if I had traction, my 60 foot time was 2 seconds flat, it sucked. This same motor ran 11.30's in my Chevelle later on with a better intake and heads. My Chevelle ran a best all time 10.56 @ 129 but with more motor and on gas, no NOS. Done with drag racing just cruising my stock but slammed 72 now days.

longhorn70gmc · 03-30-2004, 09:49 PM

Unfortunently, I am not able to get spark to my plugs as of yet to find out. Real Bummer!!!!
Longhorn70GMC

**GMC-YA68** · 03-30-2004, 10:19 PM

Quote:

Originally posted by longhorn70gmc

Unfortunently, I am not able to get spark to my plugs as of yet to find out. Real Bummer!!!!
Longhorn70GMC

dang that sucks! u need to get that done.

**GMC-YA68** · 03-30-2004, 10:20 PM

Quote:

Originally posted by GSFMECH
Depends on how much money you have. I ran a 402 in a 71 SWB Cheyenne 10 or 12 years ago. It was a low compresion stocker w/ crap heads and I slipped in a 425 horse 427 solid lifter cam, Torker intake, 780 holley, 1 7/8" headers w/ 400 turbo, 3500 stall w/ 4:11 posi. Had some M-T sportsmans on it. PS,PB, AC, 3950 lbs. Ran 14.25@ 93 mph through the mufflers. Pulled it and put in a 10 to1 454 (LS6 pistons), steel crank, truck rods, balanced and bored w/ deck plates, moly rings, big Crane solid lifter cam w/ roller rockers, oval port open chamber heads that were hogged out. Edelbrock C-396 intake w/ a 850 double pumper. Ran 12.59 @ 102 mph through the mufflers, with a 1.73 60 foot time. The rest of the combo was the same as before. I pulled it and put the motor in a stripped down 69 SWB and ran a terrible wheel spinning 12.25, coulda got it in the 11's easy if I had traction, my 60 foot time was 2 seconds flat, it sucked. This same motor ran 11.30's in my Chevelle later on with a better intake and heads. My Chevelle ran a best all time 10.56 @ 129 but with more motor and on gas, no NOS. Done with drag racing just cruising my stock but slammed 72 now days.

Sounds like on heck of a motor. Seems like you went through some good and bad times with it. Thanks for all the info

03-29-2004, 05:49 PM	#1
GMC-YA68 Senior Member Join Date: Mar 2004 Location: Lee's Summit, MO (KC) Posts: 742	What do you guys with them big blocks run hey i am just a little curious of what u guys with your big blocks run at the track. i was gonna drop a 396 in mine but i didnt have enough money so i went wit some bolt on mods for my sb 327. just wondering how bad i missed out. __________________ -Keegan- '72 Jimmy 4x4 - 5.3/4L65E/NP205 swap http://67-72chevytrucks.com/vboard/s...d.php?t=663780

03-30-2004, 09:49 PM	#3
longhorn70gmc Senior Member Join Date: Feb 2001 Location: Ridgecrest. CA, USA Posts: 1,715	Unfortunently, I am not able to get spark to my plugs as of yet to find out. Real Bummer!!!! Longhorn70GMC __________________ Billy 1970 GMC Sierra Grande 402/TH400 (Longhorn)14 years and counting rebuild! 1975 (Build) Chevrolet SWB 4X4 350 SB Lifted 6 inches 1970 Ford F250 Ranger 390 BB 2010 Ford Super Duty F250 XLT W/4 inch lift kit and Pro Comp Tires Hub Cap Freak! *I need another truck like I need another hole in the head!* I'M IN THE MARKET...AS IT WERE!

03-30-2004, 01:27 AM	#2
GSFMECH On the road Join Date: Jan 2004 Location: NATCHITOCHES LOUISIANA Posts: 810	Depends on how much money you have. I ran a 402 in a 71 SWB Cheyenne 10 or 12 years ago. It was a low compresion stocker w/ crap heads and I slipped in a 425 horse 427 solid lifter cam, Torker intake, 780 holley, 1 7/8" headers w/ 400 turbo, 3500 stall w/ 4:11 posi. Had some M-T sportsmans on it. PS,PB, AC, 3950 lbs. Ran 14.25@ 93 mph through the mufflers. Pulled it and put in a 10 to1 454 (LS6 pistons), steel crank, truck rods, balanced and bored w/ deck plates, moly rings, big Crane solid lifter cam w/ roller rockers, oval port open chamber heads that were hogged out. Edelbrock C-396 intake w/ a 850 double pumper. Ran 12.59 @ 102 mph through the mufflers, with a 1.73 60 foot time. The rest of the combo was the same as before. I pulled it and put the motor in a stripped down 69 SWB and ran a terrible wheel spinning 12.25, coulda got it in the 11's easy if I had traction, my 60 foot time was 2 seconds flat, it sucked. This same motor ran 11.30's in my Chevelle later on with a better intake and heads. My Chevelle ran a best all time 10.56 @ 129 but with more motor and on gas, no NOS. Done with drag racing just cruising my stock but slammed 72 now days.



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