SCORED a 396 but...need info - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Inthuwind · 02-27-2004, 04:06 PM

I just picked up a rebuilt 396 for 500$$--what mounts can I use to stuff this into a '68 stepside????

**CPNE** · 02-27-2004, 04:17 PM

**CPNE** · 02-27-2004, 04:43 PM

Those mounts bolt directly to the frame. You will need to drill one additional hole in the cross-member but the upper holes are alread there in the frame as is one of the lower holes on the x-member.

This is not as easy as an I6 to a small block swap.

Assuming 2wd, you'll need to consider:

1. Driveshaft shortening. The BB sits the engine back towards firewall somewhat.

2. Along the same lines, you'll need to address column shift linkage or floor shift location as well as clutch linkage.

3. The accessory brackets and exhaust manifolds are completely different than those on a smallblock and expensive to locate.

4. Fan shroud is different.

5. You may need a high hump for your cab as well.

I've done this swap, but I was fortunate enough to have a complete unmolested donor to grab the necessary pieces from.

Here is a pic:

**CPNE** · 02-27-2004, 04:44 PM

another

*Javy* · 02-28-2004, 07:09 AM

Here is a picture of a big block in a 67-72 (427)

*Javy* · 02-28-2004, 07:11 AM

I recommend you search for big block motor mount theads.

stllookn · 02-28-2004, 08:29 AM

Javy, Nice motor! I guess you have never had a carb backfire through those "firestarter" aircleaners...LOL! Get a hip mount for your fire extinguisher!

Longhorn Man · 02-28-2004, 09:12 AM

As sweet as that hig rise is, you really should get rid of the air filters, they are a seriouse fire hazzard.

Inthuwind · 02-28-2004, 12:21 PM

I agree, those air cleaners are a fire hazard--happened to me in my 10th Anniversary Trans Am. NOT A PRETTY SIGHT!!!!!

02-27-2004, 04:06 PM	#1
Inthuwind Straight jacket required Join Date: Oct 2003 Location: OKC, OK Posts: 882	SCORED a 396 but...need info I just picked up a rebuilt 396 for 500$$--what mounts can I use to stuff this into a '68 stepside???? __________________ 1968 C10 Short Stepper 350/350 A/C P/S P/B Front disc 3/5 static/ 12bolt rear 3:73 1979 Pontiac Trans Am 10th Anniversary/455/4spd 2011 H-D Street Glide - CAMMED n lowered Dad always said,"Son, if you can't be good...be good at it."

02-27-2004, 04:17 PM	#2
CPNE Resident Curmudgeon Join Date: Dec 1999 Location: NH Posts: 6,664	You'll need these and more... __________________ Currently on or near the homestead: 67 Chevy SWB 2WD stepside 350/3 on tree (Pat's) 67 GMC SWB 2WD Fleet 402/auto (Brian's under construction) 67 Chevy 3/4 ton 2WD 402/auto (Business Hauler) 67 Chevy 1 ton dually 2WD 396/4 speed (Former business hauler, Needs TLC) 68 Chevy 1/2 ton Suburban 2WD 250 six/3 on tree (Brian's Needs TLC) 70 Chevy 3/4 ton 4WD 350/4 speed (Pat's - Disguised as a 68 GMC) 71 Chevy SWB stepside (Crushed by tree - parts donor) 72 Chevy 3/4 ton 4WD (Parts donor) 72 Chevy 3/4 ton 4WD Suburban (Parts Donor) 72 GMC 3/4 ton 4WD 292 six/4 speed (Mine - Disguised as a 67 GMC) 81 GMC 4WD Dually Dump Body 350/4 speed (Business Hauler) 82 Camaro Z/28 355/Super T-10 (Pat's toy) 93 Caprice 9C1 (Brian's Cop Car) 02 Toyota Camry (Reliable but a souless steel and plastic hulk) 2011 2SS RS Camaro M6 Factory Hurst Shifter Maybe I need to sell some of this crap Yet another Bozo with a sawz-all

02-27-2004, 04:43 PM	#3
CPNE Resident Curmudgeon Join Date: Dec 1999 Location: NH Posts: 6,664	Those mounts bolt directly to the frame. You will need to drill one additional hole in the cross-member but the upper holes are alread there in the frame as is one of the lower holes on the x-member. This is not as easy as an I6 to a small block swap. Assuming 2wd, you'll need to consider: 1. Driveshaft shortening. The BB sits the engine back towards firewall somewhat. 2. Along the same lines, you'll need to address column shift linkage or floor shift location as well as clutch linkage. 3. The accessory brackets and exhaust manifolds are completely different than those on a smallblock and expensive to locate. 4. Fan shroud is different. 5. You may need a high hump for your cab as well. I've done this swap, but I was fortunate enough to have a complete unmolested donor to grab the necessary pieces from. Here is a pic: Attached Images __________________ Currently on or near the homestead: 67 Chevy SWB 2WD stepside 350/3 on tree (Pat's) 67 GMC SWB 2WD Fleet 402/auto (Brian's under construction) 67 Chevy 3/4 ton 2WD 402/auto (Business Hauler) 67 Chevy 1 ton dually 2WD 396/4 speed (Former business hauler, Needs TLC) 68 Chevy 1/2 ton Suburban 2WD 250 six/3 on tree (Brian's Needs TLC) 70 Chevy 3/4 ton 4WD 350/4 speed (Pat's - Disguised as a 68 GMC) 71 Chevy SWB stepside (Crushed by tree - parts donor) 72 Chevy 3/4 ton 4WD (Parts donor) 72 Chevy 3/4 ton 4WD Suburban (Parts Donor) 72 GMC 3/4 ton 4WD 292 six/4 speed (Mine - Disguised as a 67 GMC) 81 GMC 4WD Dually Dump Body 350/4 speed (Business Hauler) 82 Camaro Z/28 355/Super T-10 (Pat's toy) 93 Caprice 9C1 (Brian's Cop Car) 02 Toyota Camry (Reliable but a souless steel and plastic hulk) 2011 2SS RS Camaro M6 Factory Hurst Shifter Maybe I need to sell some of this crap Yet another Bozo with a sawz-all

02-27-2004, 04:44 PM	#4
CPNE Resident Curmudgeon Join Date: Dec 1999 Location: NH Posts: 6,664	another Attached Images __________________ Currently on or near the homestead: 67 Chevy SWB 2WD stepside 350/3 on tree (Pat's) 67 GMC SWB 2WD Fleet 402/auto (Brian's under construction) 67 Chevy 3/4 ton 2WD 402/auto (Business Hauler) 67 Chevy 1 ton dually 2WD 396/4 speed (Former business hauler, Needs TLC) 68 Chevy 1/2 ton Suburban 2WD 250 six/3 on tree (Brian's Needs TLC) 70 Chevy 3/4 ton 4WD 350/4 speed (Pat's - Disguised as a 68 GMC) 71 Chevy SWB stepside (Crushed by tree - parts donor) 72 Chevy 3/4 ton 4WD (Parts donor) 72 Chevy 3/4 ton 4WD Suburban (Parts Donor) 72 GMC 3/4 ton 4WD 292 six/4 speed (Mine - Disguised as a 67 GMC) 81 GMC 4WD Dually Dump Body 350/4 speed (Business Hauler) 82 Camaro Z/28 355/Super T-10 (Pat's toy) 93 Caprice 9C1 (Brian's Cop Car) 02 Toyota Camry (Reliable but a souless steel and plastic hulk) 2011 2SS RS Camaro M6 Factory Hurst Shifter Maybe I need to sell some of this crap Yet another Bozo with a sawz-all

02-28-2004, 08:29 AM	#7
stllookn Saving 1 truck at a time! Join Date: Aug 2001 Location: Kent, WA Posts: 6,465	Javy, Nice motor! I guess you have never had a carb backfire through those "firestarter" aircleaners...LOL! Get a hip mount for your fire extinguisher! __________________ '68 C20 Longhorn 50th Anniversary 400/TH400 '68 C20 Longhorn 50th Anniversary 468/TH400w/buckets '72 C20 Halfhorn (Longhorn w/o cab and front clip) '69 Flxible Cruiser (look up ugly in the dictionary)

02-28-2004, 07:09 AM	#5
Javy Account Suspended Join Date: Jan 2004 Posts: 129	Here is a picture of a big block in a 67-72 (427)

02-28-2004, 07:11 AM	#6
Javy Account Suspended Join Date: Jan 2004 Posts: 129	I recommend you search for big block motor mount theads.

02-28-2004, 09:12 AM	#8
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	As sweet as that hig rise is, you really should get rid of the air filters, they are a seriouse fire hazzard.

02-28-2004, 12:21 PM	#9
Inthuwind Straight jacket required Join Date: Oct 2003 Location: OKC, OK Posts: 882	Air cleaners I agree, those air cleaners are a fire hazard--happened to me in my 10th Anniversary Trans Am. NOT A PRETTY SIGHT!!!!! __________________ 1968 C10 Short Stepper 350/350 A/C P/S P/B Front disc 3/5 static/ 12bolt rear 3:73 1979 Pontiac Trans Am 10th Anniversary/455/4spd 2011 H-D Street Glide - CAMMED n lowered Dad always said,"Son, if you can't be good...be good at it."



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