4.3 CPI Fiero out of garage at last

[satchboogyfan]

What kind of power do you get out of it

1/4 mile time

Rear wheel hp

Curious to compare the 4.3 v6 to the 3.8 series II v6

[fieroguru]

@satchboogyfan

The engine is rated at 200 hp/265tq at the crank from GM and it is still bone stock with factory manifolds running the factory ecm. It was built for a fun commuter and hasn't been put on the dyno or taken to the track. It has seen a best of 32 mpg on the interstate and routinely pulls down 25-28 mpg on my daily commute.

It probably has similar performance as the non-supercharged 3800's, but is far less common in fieros.

[bskomo15]

Sweet car man I have a 86 GT and have been wanting to do an engine and transmition swap but never knew how tough it would be. But that car sounds sweet and should run nice I give you major props.

[MisterHolaMan]

Do you know how I could get a 4.3 mounted to the factory tranny? Is there an adapter out there for cheap?

[MisterHolaMan]

How do you close the engine cover? Did you get a custom one? I think I'll be doing this swap soon.

[fieroguru]

I had to notch the passenger side deck lid support rib to clear the top of the throttle body. Aside from that, the decklid is stock.

[redneckframe1991]

what kind of exhaust do you have ?

[fieroguru]

Factory 4.3 manifolds to 2 1/2" mandrel bent tubes, custom merge from the two 2 1/2" tubes into the 3" inlet of the Flowtech Afterburner and then dual 2 1/2" mandrel bends to the factory GT megaphone tips.

[coddeGT]

thats cool too the 4t60 is lighter isnt it?

but of course it probably doesnt make much diff to u because u have a 4.3 back there>>

LOL. ive always admired that engine.

especially the vortec

[fieroguru]

The car weighed in at 2820 with a full tank of gas with 1680 on the rear.

[coddeGT]

what trans is that? 4t65?

nice ride

[fieroguru]

4T60.

[mattmopar440]

good shot of engine compartment, theres alot more room in there then you would think