engine location - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jlaird · 11-18-2008, 10:30 PM

What are the pros and cons(and reasoning) of having the engine in the forward motor mount location vs. rear? Being bagged, any reason for one over the other? Do people have issues with an HEI hitting the firewall?

*Shane* · 11-18-2008, 11:21 PM

If I remember correctly, the V8's came in the front holes from the factory and the I-6's came in the rear holes.

I'v heard the factory moved the V8 further forward due to handling & brake bias differences caused by the engine being heavier.

jlaird · 11-19-2008, 08:10 AM

Quote:

Originally Posted by Shane

If I remember correctly, the V8's came in the front holes from the factory and the I-6's came in the rear holes.

I'v heard the factory moved the V8 further forward due to handling & brake bias differences caused by the engine being heavier.

Oh good. I didn't know that. Thanks for the info.

Spray-Bomb · 11-19-2008, 01:00 PM

I moved my engine as far back as possible & made my own holes

It was a lot more work, but it balances the trucks weight out more
I also had to put a high hump in it for the trans to fit

**scotts62** · 11-19-2008, 01:06 PM

They look better moved back i think, then they dont have that big gap between the distributor and firewall

Slammed67 · 11-19-2008, 02:34 PM

I moved mine back and lowered the front mounts slightly to give me more firewall/distributor clearance. I just think it looks better in the rear position.

protrash64 · 11-19-2008, 08:41 PM

Most of the 60-66's I see have the engine mounted in the rear position which I believe is factory for these years. I pulled mine forward for easier distributor clearance and if you drop a beer it will fall all the way to the floor

!! I was changing to an aftermarket trans x-member at the same time so it was the same amount of work. I have not had any issues in the front position.

jlaird · 11-19-2008, 10:01 PM

I thought I had read about HEI's hitting the firewall when the engine is in the rear position??

protrash64 · 11-19-2008, 10:38 PM

Hei still fits. my 'burb has the engine in the rear position. Again, its a 64 and it may be different than the 67-72. The frames are generally the same as far as I know.

crazy longhorn · 11-20-2008, 12:49 AM

HEI is tight, but does fit in rear position (67-72). My 383 is set in on I6 stands, & I have no issues with the distibutor......& the truck is body dropped 1 1/2" to boot. crazyL

11-18-2008, 10:30 PM	#1
jlaird Senior Member Join Date: May 2004 Location: johnstown, NY Posts: 2,393	engine location What are the pros and cons(and reasoning) of having the engine in the forward motor mount location vs. rear? Being bagged, any reason for one over the other? Do people have issues with an HEI hitting the firewall?

11-18-2008, 11:21 PM	#2
Shane Account Suspended Join Date: Jun 2000 Location: over yonder Posts: 14,270	Re: engine location If I remember correctly, the V8's came in the front holes from the factory and the I-6's came in the rear holes. I'v heard the factory moved the V8 further forward due to handling & brake bias differences caused by the engine being heavier. Last edited by Shane; 11-18-2008 at 11:21 PM. Reason: spelling

11-19-2008, 01:00 PM	#4
Spray-Bomb Texas Big Wig Join Date: Jan 2007 Location: Mineola, Texas Posts: 5,620	Re: engine location I moved my engine as far back as possible & made my own holes It was a lot more work, but it balances the trucks weight out more I also had to put a high hump in it for the trans to fit __________________ Just not low enough... ----------------------------- Sinister Killer

11-19-2008, 01:06 PM	#5
scotts62 One day... Join Date: Apr 2008 Location: Tuttle, Ok Posts: 9,243	Re: engine location They look better moved back i think, then they dont have that big gap between the distributor and firewall __________________ Scott 93 crew cab build Project 62

11-19-2008, 02:34 PM	#6
Slammed67 Progress = 0% Join Date: Nov 2001 Location: Kansas City, MO Posts: 2,108	Re: engine location I moved mine back and lowered the front mounts slightly to give me more firewall/distributor clearance. I just think it looks better in the rear position. __________________ Jason - '67 GMC swb \| '57 Bel-Air 4dr hardtop \| '56 210 4dr Wagon \| 2000 GMC Sierra

11-19-2008, 08:41 PM	#7
protrash64 Resistance is Futile Join Date: Dec 2006 Location: Mesa,Arizona Posts: 3,520	Re: engine location Most of the 60-66's I see have the engine mounted in the rear position which I believe is factory for these years. I pulled mine forward for easier distributor clearance and if you drop a beer it will fall all the way to the floor!! I was changing to an aftermarket trans x-member at the same time so it was the same amount of work. I have not had any issues in the front position. __________________ 64 CHEVY PICK-UP > http://67-72chevytrucks.com/vboard/s...otrash+re-hash 64 CARRYALL >http://67-72chevytrucks.com/vboard/s...=1964+suburban 66 LB >http://67-72chevytrucks.com/vboard/s...d.php?t=427852 STRENGTH/DETERMINATION/MERCILESS/FOREVER .......posted via stationary device

11-19-2008, 10:01 PM	#8
jlaird Senior Member Join Date: May 2004 Location: johnstown, NY Posts: 2,393	Re: engine location I thought I had read about HEI's hitting the firewall when the engine is in the rear position??

11-19-2008, 10:38 PM	#9
protrash64 Resistance is Futile Join Date: Dec 2006 Location: Mesa,Arizona Posts: 3,520	Re: engine location Hei still fits. my 'burb has the engine in the rear position. Again, its a 64 and it may be different than the 67-72. The frames are generally the same as far as I know. __________________ 64 CHEVY PICK-UP > http://67-72chevytrucks.com/vboard/s...otrash+re-hash 64 CARRYALL >http://67-72chevytrucks.com/vboard/s...=1964+suburban 66 LB >http://67-72chevytrucks.com/vboard/s...d.php?t=427852 STRENGTH/DETERMINATION/MERCILESS/FOREVER .......posted via stationary device

11-20-2008, 12:49 AM	#10
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,402	Re: engine location HEI is tight, but does fit in rear position (67-72). My 383 is set in on I6 stands, & I have no issues with the distibutor......& the truck is body dropped 1 1/2" to boot. crazyL __________________ 69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....

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