Motor mounts on a Z'd Frame - The 1947 - Present Chevrolet & GMC Truck Message Board Network

7deuce · 01-31-2006, 02:05 PM

I'm getting ready to Z the frame on my 72 short box. My question is has anyone moved the stock V8 motor mounts forward so the HEI isnt burried into the firewall. If someone has done this please let me know if theres any problems that go with this mod. And if anyone has done something different to move the engine forward your help would be great. THANKS

72MARIO · 01-31-2006, 06:36 PM

You have at least 3" from the cap to the fire wall. How much Z are you going to do ?

a squarecan · 01-31-2006, 08:53 PM

Damn 3"!?!?

Wish I had that much clearance, I nearly have to loosen the engine and rock it forward to get the HEI cap off and I haven't even cut my frame yet. To answer your question though, if you chose to move it forward I think you can go up to 3 inches forward before you start running into problems. My only question is how people are making their mounts fit on the crossmember when they move them forward sinse there is no real flat spot for them.

Keith

72MARIO · 02-01-2006, 12:54 AM

You may have to run a short water pump and electrice fans there will be no room for a stock engine mounted fan. You might also have to use a pusher and mount it in front of the ran.

It looks to me like there is 3" and I have the motor between the 6 cyl and 8cyl position.

7deuce · 02-02-2006, 12:47 PM

I think we all wish we had 3 more inches. I went to the garage lastnight, moved the motor mount and where the front bolt holr was is now the rear, drilled 1 new hole on each side and drilled 2 new holes in the x-member and there it was. Now I have enough room to get my had behind the HEI. Before I could bearly get my fingers back there. Also there is no need to change the water pump, there is plenty of room for the flex fan.

FnLow69 · 02-02-2006, 11:45 PM

so no issues with the radiator or the fans by doing that? i misgt have to do that, how much of a Z did you do?

7deuce · 02-06-2006, 03:38 PM

1.5 in Z

BK · 02-09-2006, 06:48 PM

I had a 4" Z and my 327 with my distributor i moved forward 3"... moved it all forward, just had to drill one more hole for the bottom holes. I was running dual electric fans from a 95 camaro with the radiator, and i had no clearance problems at all. Gave my distributor plenty of clearance. It was on a 65 chevy panel, and i believe the firewalls are the same or close on those... but yeah, worked great. Funny thing is... with a 700r4... a buick roadmaster wagon driveline fit perfect with a different u-joint... neat eh.

Jaredm82 · 02-10-2006, 10:32 PM

I moved my motor up and forward about 1.5". Works great

pharcydekm · 02-15-2006, 10:20 PM

wish I would have read this thread two weeks ago. I cut a chunck out of my firewall. Plenty of room but would have looked better uncut.

01-31-2006, 02:05 PM	#1
7deuce Sold! 2 days after finished Join Date: Oct 2005 Location: Ohio Posts: 327	Motor mounts on a Z'd Frame I'm getting ready to Z the frame on my 72 short box. My question is has anyone moved the stock V8 motor mounts forward so the HEI isnt burried into the firewall. If someone has done this please let me know if theres any problems that go with this mod. And if anyone has done something different to move the engine forward your help would be great. THANKS

01-31-2006, 06:36 PM	#2
72MARIO Registered User Join Date: Nov 2000 Location: Huntsville Ontario Canada Posts: 4,051	Re: Motor mounts on a Z'd Frame You have at least 3" from the cap to the fire wall. How much Z are you going to do ? __________________ 1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair http://67-72chevytrucks.com/vboard/s...d.php?t=625017 1967 C/20 6.0/4L80 Roofing Truck 1990 V2500 Suburban "Plow Truck" 2005 TAHOE DD

01-31-2006, 08:53 PM	#3
a squarecan Registered User Join Date: Mar 2004 Location: Portland, Oregon Posts: 232	Re: Motor mounts on a Z'd Frame Damn 3"!?!? Wish I had that much clearance, I nearly have to loosen the engine and rock it forward to get the HEI cap off and I haven't even cut my frame yet. To answer your question though, if you chose to move it forward I think you can go up to 3 inches forward before you start running into problems. My only question is how people are making their mounts fit on the crossmember when they move them forward sinse there is no real flat spot for them. Keith

02-01-2006, 12:54 AM	#4
72MARIO Registered User Join Date: Nov 2000 Location: Huntsville Ontario Canada Posts: 4,051	Re: Motor mounts on a Z'd Frame You may have to run a short water pump and electrice fans there will be no room for a stock engine mounted fan. You might also have to use a pusher and mount it in front of the ran. It looks to me like there is 3" and I have the motor between the 6 cyl and 8cyl position. __________________ 1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair http://67-72chevytrucks.com/vboard/s...d.php?t=625017 1967 C/20 6.0/4L80 Roofing Truck 1990 V2500 Suburban "Plow Truck" 2005 TAHOE DD

02-02-2006, 12:47 PM	#5
7deuce Sold! 2 days after finished Join Date: Oct 2005 Location: Ohio Posts: 327	Re: Motor mounts on a Z'd Frame I think we all wish we had 3 more inches. I went to the garage lastnight, moved the motor mount and where the front bolt holr was is now the rear, drilled 1 new hole on each side and drilled 2 new holes in the x-member and there it was. Now I have enough room to get my had behind the HEI. Before I could bearly get my fingers back there. Also there is no need to change the water pump, there is plenty of room for the flex fan.

02-02-2006, 11:45 PM	#6
FnLow69 Registered User Join Date: May 2005 Location: Washington Posts: 848	Re: Motor mounts on a Z'd Frame so no issues with the radiator or the fans by doing that? i misgt have to do that, how much of a Z did you do? __________________ [PROJECT] FnLow69- 69 C-10 Full frame & layin' doors [PROJECT] Laidout53 - 53' Dodge Pickup, Full Kustom Build [PROJECT] "Hot Rod" 1931 Model A Bonneville style "Dream as if you'll live forever, Live as if you'll die today" ~ James Dean

02-06-2006, 03:38 PM	#7
7deuce Sold! 2 days after finished Join Date: Oct 2005 Location: Ohio Posts: 327	Re: Motor mounts on a Z'd Frame 1.5 in Z

02-09-2006, 06:48 PM	#8
BK BK Built Join Date: Aug 2004 Location: Oroville, WA Posts: 478	Re: Motor mounts on a Z'd Frame I had a 4" Z and my 327 with my distributor i moved forward 3"... moved it all forward, just had to drill one more hole for the bottom holes. I was running dual electric fans from a 95 camaro with the radiator, and i had no clearance problems at all. Gave my distributor plenty of clearance. It was on a 65 chevy panel, and i believe the firewalls are the same or close on those... but yeah, worked great. Funny thing is... with a 700r4... a buick roadmaster wagon driveline fit perfect with a different u-joint... neat eh.

02-10-2006, 10:32 PM	#9
Jaredm82 Active Member Join Date: Jul 2005 Location: Ca Posts: 211	Re: Motor mounts on a Z'd Frame I moved my motor up and forward about 1.5". Works great

02-15-2006, 10:20 PM	#10
pharcydekm Registered User Join Date: May 2003 Location: Englewood, CO Posts: 146	Re: Motor mounts on a Z'd Frame wish I would have read this thread two weeks ago. I cut a chunck out of my firewall. Plenty of room but would have looked better uncut.



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