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#1 |
Registered User
Join Date: Apr 2004
Location: Oakley CA
Posts: 165
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4X4 bigblock help
I just wanted to know what i had to do to put a bigblock in my 1970 4X4. Some one told me that it will bolt right in but i read some where that you need a crossmember out of a 73 + bigblock 4X4.
Thanks Nick
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#2 |
Registered User
Join Date: Jan 2002
Location: shafer,mn,usa
Posts: 316
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you need to start with the truck oil pan.
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70 chevy 3/4 ton 4x4 402ci crewcab 3/4ton 94 gmc 1 ton dually crewcab 454ci 99 suburban 5.7 2001 500cc ski-doo mxz 95 500cc ski doo fan 650 bombardiar 4 wheeler |
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#3 |
Registered User
Join Date: Apr 2004
Location: Oakley CA
Posts: 165
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yeah i got that the motor is out of a 79 suburban
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#4 |
Roadtrip!
![]() Join Date: Feb 2003
Location: Grand Rapids MN
Posts: 13,737
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Dropped my big block in on the original 350 motor mounts, tapped in the firewall for dist clearance, and put on some notched corvette valve covers for a little more clearance. It is still a tight fit however...
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67 gmc custom lwb dakota truck. Sold...And bought back 69 swb 4x4 project (in progress) 70 c-10 lwb texas truck 70 4x4/BB/bkts/posi/tach(retired) 70 swb (wifes) 70 jimmy camper 71 K-5 factory 2wd 71 cheyenne 4x4/tach/posi/ plow rig 71 Cheyenne20 BB, buckets, tach, tilt, 4 speed 72 jimmy CST wyoming rig 72 jimmy Colorado rig 72 lifted texas 4x4 3/4 ton burb 65 fury conv. 383/auto 65 chrysler 300 "L" 413 auto |
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#5 |
Registered User
Join Date: Feb 2002
Location: Ferndale, Michigan, USA
Posts: 94
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I used the big block engine and crossmember mounts to install a 454 in a 72 2WD. Did not have any fit problems with the HEI to firewall or fan to rad. You may have problems because of the transfer case mounting. On the 2WD truck its easy to slide the trans mount to the next set of holes in the frame and shorten the drive shaft. Good Luck.
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#6 |
Member #1049
Join Date: Jun 2000
Location: Troy Montana
Posts: 3,940
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My 4X4 suburban has a 454 in it .. the stock 350 location and mounts.. had to relieve the firewall for the HEI distributor and valve cover clearance.. everything is still very tight.. I had the wrong oil pan.. I notched the engine crossmember one inch for clearance... (When I pull it out this winter it gets the correct pan...)
My 68 GMC 4X4 I moved the stock cross members forward two inches.. shortened the front driveline.. and had a new rear one made..... heated up the 205 shift handle and bent it to its new position... then moved the transmission shift linkage frame bracket forward.. then used a 2WD small block fan shroud.. works great... You could use the 73 and later crossmember and any pan configuration... you can put it where it is needed and drill the holes and pretty much bolt it in.. The later style mount offer a bit more in strength.. If it were me I would still move it all a few inches forward from the original location for firewall clearance... If you rather not move it all forward and not beat on the firewall.. there is one other way... bolt it in at the stock location and put on a 3 inch body lift... |
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#7 |
Registered User
Join Date: Apr 2004
Location: Oakley CA
Posts: 165
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Have you ever put a body lift on a truck? what do you have to do to do this? Will a 2 inch one work?
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#8 |
Member #1049
Join Date: Jun 2000
Location: Troy Montana
Posts: 3,940
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I have never put on a body lift.. I have a buddy that had a 3 inch lift on his big block 4X4 and the engine was in the stock location... So I know it works.. I am not sure if the 2 inch would work or not... All the body lifts consist of the spacers and longer bolts.. you just remove all of the original body bolts, lift everything up and put in the spacers and bolts... you will probalby have issues with the steering shaft and brakes lines....
Personally I really do not care for the looks of the body lifted as it leaves a gap between the front bumper and grill.. My preference is to move the engine forward |
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#9 |
Truck addict
Join Date: Sep 2003
Location: Lincoln, California
Posts: 497
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Nick in a few weeks I am also attempting to put a 454 in my 70 4x4. The previous owner had one in there and all he had done was bang a section of the firewall in a little bit and it has a little bit of a suspension lift.
Whats this about the oil pan? Do you have to put a certain type/year on for it to fit?
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1956 Chevy Napco 1972 Cheyenne Super 1970 K20 |
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#10 |
Registered User
Join Date: Apr 2004
Location: Oakley CA
Posts: 165
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hey jeremy, what transmison dose yor truck have?
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#11 |
Truck addict
Join Date: Sep 2003
Location: Lincoln, California
Posts: 497
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4spd manual(sm465)
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1956 Chevy Napco 1972 Cheyenne Super 1970 K20 |
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#12 |
Registered User
Join Date: Apr 2004
Location: Oakley CA
Posts: 165
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What are you going to do with your cluch linkage part that mounts to the block? That is the only thing that is keeping me from puting my motor in.
Thanks Nick
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#13 |
Truck addict
Join Date: Sep 2003
Location: Lincoln, California
Posts: 497
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Right now I have no idea, this is the first time I have heard of this problem. I guess I will just drop it in and work it out as I go
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1956 Chevy Napco 1972 Cheyenne Super 1970 K20 |
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#14 |
PROJECT 7DEUCE
![]() Join Date: Dec 2002
Location: GRANTS PASS OR
Posts: 21,608
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You guys with the clutch linkage problems may want to pm pont he has a manual tranny with a bb in his 67 4wd... I gave him a stock z-bar when his broke so I know he is running some sort of stock set-up..
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GO BIG GREEN ![]() MEMBER #6377 72 k-5 daily driver 6'' lift 35'' 350-350-205 slowly getting rust free. Project "7DEUCE" check out my build http://67-72chevytrucks.com/vboard/s...d.php?t=267665 Tim Powell..R.I.P EastSideLowlife..... R.I.P.. |
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#15 |
Truck addict
Join Date: Sep 2003
Location: Lincoln, California
Posts: 497
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thanks french.
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1956 Chevy Napco 1972 Cheyenne Super 1970 K20 |
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