396 in my stepper - The 1947 - Present Chevrolet & GMC Truck Message Board Network

caminokid · 12-09-2008, 04:55 PM

My 69 stepper has a 250 6cyl in it. Since the 69 3/4 isnt going to be fixed do to the cab is shot...I am yanking the motor and trans out. I want to slap the 396 in the stepper now. I noticed the shifters are not in the same place as the other. I took the hump out of the 3/4 already since I was assessing the rust damage. since I have never done a 6 to 8 swap....tell me what I getting myself into?

69 stepper shifter.

69 3/4 shifter

I notice the 3/4 sits further up towards the dash. The stepper shifter sits in the middle of the hump.

Is it possible to set the 396 in the 250 position?

Tx Firefighter · 12-09-2008, 06:09 PM

Just change the hump cover too. Put the big block in properly since you have a parts truck to scavenge from.

The tunnel cover simply unbolts and they are interchangable.

That way, you have a properly installed big block that fits and functions as good as factory original.

All you'll need is a different driveshaft made for the new drivetrain.

caminokid · 12-09-2008, 06:33 PM

since they are both LWB I should be able to use the other drive shaft.

Longhorn Man · 12-09-2008, 07:53 PM

if the stepside is a 1/2 ton, then the driveshaft won't swap over... but you MIGHT be able to use the big block's front drive shaft and the stepside's rear shaft, and have it work.
Sounds crazy, but it worked for me installing 1/2 ton stuff into my 3/4 ton burb.

**CPNE** · 12-09-2008, 08:32 PM

Quote:

Originally Posted by Tx Firefighter

Just change the hump cover too. Put the big block in properly since you have a parts truck to scavenge from.

The tunnel cover simply unbolts and they are interchangable.

That way, you have a properly installed big block that fits and functions as good as factory original.

All you'll need is a different driveshaft made for the new drivetrain.

Been there done that. You'll need to remove the bell housing cross member from the BB truck and put it in the truck you are building.

Also, clutch linkage and front springs.

caminokid · 12-10-2008, 12:59 AM

Quote:

Originally Posted by Longhorn Man

if the stepside is a 1/2 ton, then the driveshaft won't swap over... but you MIGHT be able to use the big block's front drive shaft and the stepside's rear shaft, and have it work.
Sounds crazy, but it worked for me installing 1/2 ton stuff into my 3/4 ton burb.

yeah it does sound crazy Andy...but I know your right. I slide the front shaft out of the back shaft and use it...it will be ok then.

**68350** · 12-10-2008, 05:21 AM

The reason the shifters are in different positions is because ones a 6 and ones a v-8. Since you have a complete parts truck, do it right(i.e. motor mounts, etc.). Have fun and ask questions!!

12-09-2008, 04:55 PM	#1
caminokid Chevy nut Join Date: Jun 2007 Location: Springfield, Illinois Posts: 2,265	396 in my stepper My 69 stepper has a 250 6cyl in it. Since the 69 3/4 isnt going to be fixed do to the cab is shot...I am yanking the motor and trans out. I want to slap the 396 in the stepper now. I noticed the shifters are not in the same place as the other. I took the hump out of the 3/4 already since I was assessing the rust damage. since I have never done a 6 to 8 swap....tell me what I getting myself into? 69 stepper shifter. 69 3/4 shifter I notice the 3/4 sits further up towards the dash. The stepper shifter sits in the middle of the hump. Is it possible to set the 396 in the 250 position? __________________ 84 Chevy Custom Deluxe 1/2 Ton Named Fade To Black II "Remember kids there is NO replacement for displacement!"

12-09-2008, 06:09 PM	#2
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Re: 396 in my stepper Just change the hump cover too. Put the big block in properly since you have a parts truck to scavenge from. The tunnel cover simply unbolts and they are interchangable. That way, you have a properly installed big block that fits and functions as good as factory original. All you'll need is a different driveshaft made for the new drivetrain. __________________ I'm on the Instagram- @Gearhead_Kevin

12-09-2008, 06:33 PM	#3
caminokid Chevy nut Join Date: Jun 2007 Location: Springfield, Illinois Posts: 2,265	Re: 396 in my stepper since they are both LWB I should be able to use the other drive shaft. __________________ 84 Chevy Custom Deluxe 1/2 Ton Named Fade To Black II "Remember kids there is NO replacement for displacement!" Last edited by caminokid; 12-09-2008 at 06:34 PM.

12-09-2008, 07:53 PM	#4
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: 396 in my stepper if the stepside is a 1/2 ton, then the driveshaft won't swap over... but you MIGHT be able to use the big block's front drive shaft and the stepside's rear shaft, and have it work. Sounds crazy, but it worked for me installing 1/2 ton stuff into my 3/4 ton burb.

12-10-2008, 05:21 AM	#7
68350 Senior Member Join Date: Jan 2002 Location: Williston, ND Posts: 2,999	Re: 396 in my stepper The reason the shifters are in different positions is because ones a 6 and ones a v-8. Since you have a complete parts truck, do it right(i.e. motor mounts, etc.). Have fun and ask questions!! __________________ 68 Chevy CST/10, 50th Anniversary, 327/th400, 373 posi, buckets 68 GMC Shortbox Stepside, 402/th400, Tilt, Tach, Bucket Seats, 3.08 Positraction 69 Chevy Camaro SS, 383, 4 speed, positraction 70 Chevy El Camino SS396, Triple Black, 454/th400, Tach 70 Chevy Shortbox Stepside 4x4, 350/th350, Tilt, Tach, Cab Lights, Bumper Guards, Tow Hooks 70 Chevy 3/4 Longbox, 350/auto, 70k, SURVIVOR 71 Chevy Blazer, CST, 350/auto 71 GMC Sierra K2500, 454, 4 speed, 4.10 posi, 37s 71 Custom/30, Open Road, 350/th400, tilt 72 Chevy Shortbox Fleetside, 496 Stroker/th400, Tilt, Tach, Bucket Seats, 3.42 Posi 72 GMC Sierra Grande 2500. 427/th400, tilt, a/c, tool and stowage, buckets/console, 3.54 posi



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