TORFAB Motor Swap - GM Cruiser Version 2

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wardharris

SILVER Star
Joined
Oct 31, 2011
Threads
42
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3,463
Location
Boise, Idaho
Website
longrangeamerica.com
Teaser photo:
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Here’s a callout to the guys that keep old Toyotas on the road. One in particular…..

Sometime in the ‘90s, my truck was the recipient of a transplanted GM Gen II 5.7 motor and transmission. The motor was out of a 1995 Cad Fleetwood and the conversion was reasonably well done.

In the two years I have had the wagon, it has run well, with a few frustrating issues that impacted reliability, access to parts and cost of ownership. On a trip from California to home in Western Washington, the rig evidenced end of life behaviors. We barely made it.

Rather than try (again) to deal with an old car motor, I sourced a new(er) truck motor from Bryan at BD Turnkey and had it shipped to Tor Slinning at Torfab in Mukilteo, Washington (north of Seattle).

Tor and his crew do awesome work and in no time at all, the wagon had a new motor, transmission and accessories.

It went from this:
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To this:
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Tor used my truck to finalize design of a new line of Vortec motor mounts as seen above - very robust.

I have complete confidence in Tor’s work and after a quick once-over, I proceeded to put 1,000 miles on it, in three states. It didn’t miss a beat.

As a daily driver, my “old” truck and V8 delivered 10-14 mpg (corrected odo for gears, tires, etc.) and cruised well at 60 to 75. The new truck has more oomph, doesn’t work as hard and gives me 16 mpg in mixed city/highway and 17.5 mpg highway.

The 5.3 is an all aluminum “high output” version from a 2007 4wd crew cab. It has Z06 ‘vette heads, a higher duration cam and heads with bigger valves. BD gave it a performance tune and Tor installed Hooker block-hugger headers. It is probably producing somewhere between 330 and 350 hp, with plenty of torque. The integrated cruise control management works well for my style of driving.

The motor had 79,000 miles and the 2007 4l60e had 12,000 miles. Because of the aluminum block and lighter accessories, we took well over 100 lbs off the front axle. Every little bit helps when you add crazy stuff to the front of these rigs.

This is my daily driver, including hot, cold, wet, dry, highway, city and fire roads.
Tor did a fine job at a fair price. I could not be more pleased.

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Old Motor.jpg


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Looks fantastic!
 
Lehi -

Excellent observation. The truck has a 1" body lift. The PO install had the Gen II sitting way too low. I think he did the conversion for towing rather than offroading, second PO tried to offroad it, which may be one of the reasons I now own it.
 
Glad to see you have another 60 out there Ward! Great looking truck and BD is great to deal with. Randomly found them on Pirate4x4 only to figure out they are 20 miles from my house.
 
I doubt you have 330-350 hp.
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I bet it is closer to 375-400 (at the crank).

Those heads are awesome, not to mention the fact that headers and a tune (even short, non equal length one) really open these motors up.
 
I doubt you have 330-350 hp.
Those heads are awesome, not to mention the fact that headers and a tune (even short, non equal length one) really open these motors up.

Thanks, I think you may be right as GM seems to underrate their motors. The L33s have a pretty strong fan base and I count myself lucky to have found this one with low miles.

The truck has been on the road for a week with the new motor and I have cut it loose just a couple of times. Cannot imagine needing more power or torque.

I have been following the current thread on crash/rollover protection and thinking a lot about safety and the limitations of my 40 year old suspension design. One reason I was keen to have the cruise control installed and functional was as a speed limiter. High speed freeway sweepers are not a good idea in this truck and I am not always the best / safest driver.

I scared myself with the old motor....this one is twice as nice.:cheers:
 
V8 swaps can be very aggrivating working through the gremlins, but the end result is like having a new truck.
 
Very nice rig! I hope to do the same thing to mine someday.
I would love to drive it sometime, I'm curious how much more
power it really is!
 
I would love to drive it sometime, I'm curious how much more power it really is!
Thanks, Pedro. Happy to take a ride with you. I will be in California most of the time through March. Take a drive by Torfab for a great dose of Cruiser tech. A Vortec makes these old wagons feel like below.

As an immature, juvenile person, the "new" truck makes me forget the laws of man and physics (time, space, etc.). Some scary stuff.

BTF.jpg
 
All you have to do to get a feel of the change is simply look at the stock values of HP and torque of the 2f and compare that to a modern GM v8. It's a game changer... Think about actually passing someone on the hwy, think about accelerating up a hill, think about being able to go "too fast" rather easy, think about the engine starts hot/cold with generally one turn-over of the engine.

Off-road it does not make a huge difference because you generally are in low range or otherwise moving fairly slow. ITs still fun to give it hell off-road at times, but the change in engines does not really add to the capability off-road.

I don't mind paying for gas...but I like a little bit of power at 10-13mpg.
 
All you have to do to get a feel of the change is simply look at the stock values of HP and torque of the 2f and compare that to a modern GM v8. It's a game changer... Think about actually passing someone on the hwy, think about accelerating up a hill, think about being able to go "too fast" rather easy, think about the engine starts hot/cold with generally one turn-over of the engine.

Off-road it does not make a huge difference because you generally are in low range or otherwise moving fairly slow. ITs still fun to give it hell off-road at times, but the change in engines does not really add to the capability off-road.

I don't mind paying for gas...but I like a little bit of power at 10-13mpg.

Well put Elbert. Not necessarily my thoughts exactly, but very good rationale for anyone on the fence on a 60 swap.

I just can't get beyond the whole "Merican engine" thing (even though the 2F is nothing but a slightly modded American engine done better).
 
I just can't get beyond the whole "Merican engine" thing
It took me a long time to get there.....maybe I shoulda moved to Australia back in the day. Then I could just go buy one of these:

Yellow 70.jpg
 
It took me a long time to get there.....maybe I shoulda moved to Australia back in the day. Then I could just go buy one of these:

That would be nice....wonder what a beauty like that costs though in US dollars?
 
Well put Elbert. Not necessarily my thoughts exactly, but very good rationale for anyone on the fence on a 60 swap.

I just can't get beyond the whole "Merican engine" thing (even though the 2F is nothing but a slightly modded American engine done better).


I'm not a party line guy (on some things).... I use to think that sometimes there was only one way to peel the orange...back then in my case it was GM. Over time I've learned that there is more than one way to "peel the orange"... even if it means a hybrid setup...like I and others have.

In my case my truck is not crazy nice or without a few dents and plenty of scrapes and scratches... its all about the fun factor.

I understand brand loyalty....its comparable to me saying it would be wrong to put a hemi in a chevelle or a pontiac 350 in a z28...those things are just not done.

I just consider the GMV8 and associated transmissions a plus or value added to the fun factor. In my case I'm not going to spend big $$ on a 2f rebuild or long block. Now maybe if you gave me a 70 427 vette...I might be persuaded to stay with the 427 or a similar GM big block engine because in my minds "eye" that car goes with that engine... I'm sure there might be some guys who would want to swap in a modern 427 small block fuel injected supercharged monster...that probally even outperforms the old classic 427. If I had that kind of pocket money I might be inclinded to do the same.

Bottom line... I do these things for fun, I drive offroad for fun and I have the 60 for fun, and I'm sure most of us here are in the same boat. When you start drilling holes and pulling carpet out and adding this and that....the skys clear and the waters part and all kind of crazy stuff might happen. Diesel engines, different axles, different engines/transmissions. To me the stock unmodified 60 just does nothing for me...the modifications make the truck.
 

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