3S-GE to 3S-FE conversions - Toyota Nation Forum : Toyota Car and Truck Forums

2MUCHPRESHA · 02-01-2005, 03:44 PM

I have an 87 celica gt-s. I blew the stock motor by running 20 psi on stock everything, i know, it was dumb. Now i want to put a new motor in my car, but none of the junkyads in my area have any used GE's. So i was wondering if it was possible to put an FE block and GE head together, and if it would run. any suggestions would help.

RakeRon · 02-01-2005, 03:51 PM

I don't see why it wouldn't work. Just don't run anything higher than 5 psi boost on stock internals (its like a rule of thumb). Another option is to get a 5SFE and swap on you 3SGE head to make it a 5SGE stroker.

MIGHTY · 02-01-2005, 05:51 PM

dont forget to adjust your valve shims cause they are different in size

and iff you dont want to change your dist. take the dist, and remove the little pressed pin from the fork that enters the cam,

fredk · 02-01-2005, 07:59 PM

the 3s blocks are all the same, just build up a shortblock

Tommy · 02-01-2005, 10:00 PM

You can use the block, but not the FE internals.

fredk · 02-01-2005, 10:08 PM

hey mighty, you hit on something, what are the differences in the dists of the 2 heads?

2MUCHPRESHA · 02-02-2005, 01:57 PM

Quote:

Originally Posted by Stevethecleric

You can use the block, but not the FE internals.

Whats the difference in internals? so that means if i want to rebuild my GE block i cant replace the crank with an FE crank?

fredk · 02-02-2005, 05:04 PM

the fe internals are nowhere near as strong as the ge stuff

Pineapple · 02-02-2005, 10:37 PM

Crank is never a problem, rod is.

Tommy · 02-02-2005, 10:55 PM

The internals are not only weaker, the pistons are different and wont allow you to use the GE head. the only thing thats the same between those 2 engines is the block.

fredk · 02-03-2005, 07:49 PM

I love it Steve

we need to put up a big sign with the differences of the fe and ge motors

MIGHTY · 02-04-2005, 11:27 PM

well its wierd because my 88 gt came with an internal coil, BUT ive seen another car like mine with an external coil???, THE 86-89 distr. have the teeth at the end of it, they are actually smaller on the 3sge than the fe , so you cant swap the 2 dist, right out , you have to remove the push pin and install it on the 2nd dist, because they wont fit into the cams, it depends on the setup you want i prefer the external coil cause the msd. hope that gives you and idea

MIGHTY · 02-04-2005, 11:33 PM

You can use the fe block with the ge head, u have to adust things in your head, valve shims have to be adjusted toward the fe specs, the lift is shorter on the fe but the duration is longer on the ge, plus intake manifold wont fit, fuel reg. is in different spot, so you can use it its just takes a little work and a machienst who knows what he is doin

Tommy · 02-04-2005, 11:44 PM

in the long run, it would just be cheaper to buy a new GE, converting an FE to a GE is just stupid. and if you are running boost, the FE internals will eat themselves at anything over 5-6lbs. Just get some forged 3SGTE internals that are designed for boost, and put those and the GE head on the FE block. The blocks for the FE, GE and GTE are identical.

Get GTE internals dude, the FE will die, just ask half the people that have turbo'd a FE what they are driving these days and they'll tell you. the amount of work required for a FE - GE conversion is just not worth the effort when their are better easier solutions.

MIGHTY · 02-04-2005, 11:50 PM

Very true steve it would be wise to get the "T" internals, thw work required isnt worth it, u need wire harness and ecu from ge and th eintake manifold