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: 818	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.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.