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Moving the engine foward

M

Musclerodz

1/2 ton status
Joined
Apr 23, 2005
Posts
121
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Location
Washington, OK
What is a realistic number I can move it foward. I have a LT1 so no mechanical fan & 2 1/2" lift springs up front. Installing a 4L80E combo and it is 3.5" longer than the TH350 I removed and trying to keep good placement of the t-case shifter and driveshaft clearances.

Mike
 
When the engine pulleys hit the electric fans....back up about 1" :D

I don't think there's really a limit, the problem is that you are changing the weight bias in the wrong direction (more weight on the nose). You should think about modifying the shift linkages so that they can work through the factory holes even if the pivot is a couple inches back from normal.

Do you have a set of 4-corner scales at that fancy shop of yours?? You could weigh the truck and see how much weight is actually being added up front by moving the engine forward, then decide if it's acceptable to you.

The 4L80E is a long tranny....I spent some time trying to use one in my 1st Gen along with a complete Doubler setup. It was REALLY long and I'd have had to move the engine forward something like 5 inches to make it work at all. I finally gave up on the whole idea, and went with a non-overdrive TH400, modest 4.10 axle gears (for highway friendliness) and a deeply geared Atlas 4 transfercase to save on the overall length of the driveline, while still giving a nice crawl ratio.

Life is choices.



:usaflag:
 
Greg72 said:
When the engine pulleys hit the electric fans....back up about 1" :D

I don't think there's really a limit, the problem is that you are changing the weight bias in the wrong direction (more weight on the nose). You should think about modifying the shift linkages so that they can work through the factory holes even if the pivot is a couple inches back from normal.

Do you have a set of 4-corner scales at that fancy shop of yours?? You could weigh the truck and see how much weight is actually being added up front by moving the engine forward, then decide if it's acceptable to you.

The 4L80E is a long tranny....I spent some time trying to use one in my 1st Gen along with a complete Doubler setup. It was REALLY long and I'd have had to move the engine forward something like 5 inches to make it work at all. I finally gave up on the whole idea, and went with a non-overdrive TH400, modest 4.10 axle gears (for highway friendliness) and a deeply geared Atlas 4 transfercase to save on the overall length of the driveline, while still giving a nice crawl ratio.

Life is choices.



:usaflag:
Click to expand...
I know moving it foward is not ideal, but it is already crammed as far back stock as it can go. I will probably split the difference and only move it about 2" will should be plenty.

We don't have scales but a buddy does. Already getting an aluminum radiator and considering moving the battery but have not decided on that yet. If I was real concerned about front weight, I probably would have installed a LS1 in it instead, but budget prevailed and already had the motor left over from another project.

Mike
 
There is nothng wrong with "budget" as long as you plan for "OVER BUDGET". :D
 
Greg72 said:
Damn, I hate that word too!!! :D It messes up everything....
Click to expand...
Budget went out the window as soon as I started taking the truck apart. I merely have decided just not to short cut anything along the way. The budget now just means if I want something else for the truck, I either save up for it and buy it, or sell something else to buy it.
 
I have mine set 2" forward. the front driveline is kinda short for the lift I have but I'm in the middle of maybe changing that.
 
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