N/A GN motor

[HotAirGN]

If you were to use a stock GN motor and put a carb on it would it have more horsepower than a stock regular 3.8? I have a complete motor minus turbo setup from my 84GN, I am always asked this but not sure of an answer.

 

[buickpower]

you mean without a turbo? probably not.

 

[graza002]

The compression might be too low to take a turbo motor and make it an N/A carb motor.



Andrew

 

[onefastcar]

I don't know compression ratios for stock regal 3.8 but i would say no if comp. which is probably higher on a stock regal it will make more horsepower for sure, and to put a distributor and carb and different intake in our cars ain't like just slap one in not to mention reworkin the ecm to function along but i don't even know why anyone would even ask this anyhow?

 

[alec296]

it will work and with the gn cam still feel like its turbocharged because
of the cam powerband. it will have more kick as rpms come up.
you want more hp build a motor with 9 to 1 comp like the old 225.
i have the 225 in my 65 and it pulls hard for a n/a .
comp in the turbo is about the same in the 84 due to steel shim headgasket
you could change the cam in an n/a
and get the same effect.i have done it and with 3.23 gears it moved good
but still nothing to write home about.you could try an early carbed turbo
they are fairly inexpensive.
andy

 

[onefastcar]

the price of making a stock ttype faster $500
the price of backwards engineering $2500
watching an opel, omni or escort blow your doors off priceless

 

[Ormand]

The turbo cam is not much of a cam- not for making horsepower without a turbo. It may be a have a little more lift and duration than the cam on the normally aspirated engines with the two barrel carbs, though. I don't know what the cam specs were for the those engines. But I do know that the turbo had the dished pistons, and a slightly lower compression ratio than the normally aspirated engines, so it would seem likely that the GN engine, without the turbo would NOT make more power than the N/A engine.

 

[HotAirGN]

That is close to what I was thinking wasnt to sure. A friend just told me to let them put my engine in their car as they would change the intake carb and distributor to alieviate the ECM. Compression would be lower as well as other specs but say for example: Stock 84GN ~ 200hp, didnt think the motor would lose 90hp to then match the stock 3.8 ratings.

 

[turbofish38]

The NA 3.8 has something like a 8 to 1 comp ratio so the turbo pistons aint going to hurt it any. The old carb turbos used the same cams as the NA versions so that shouldn't be a big issue either. Sounds like reverse engineering at its worst. Unless you have some pre-ECM parts laying around I cant see how this would be pratical.