Mercruiser 454/330 Torque

[MiamiOffshore]

How much torque does a stock 454/330 make?

 

[DAREDEVIL]

I would think around 300+

 

[MiamiOffshore]

I've looked around but can't find any spec info on the Merc. 454/330hp that lists torque and I wonder if anyone has ever truly dynoed a stock 330 to base line it.

 

[BUIZILLA]

approx 460-470@3200

with logs it was 330, upswept manifolds was about 340.... Crusader was 350/510 but they rated it 200 rpm more than Merc did, and they used smoother upswept risers, and the Qjet was jetted a tad fatter..

same damm basic engine

 

[DAREDEVIL]

approx 460-470@3200

with logs it was 330, upswept manifolds was about 340.... Crusader was 350/510 but they rated it 200 rpm more than Merc did, and they used smoother upswept risers, and the Qjet was jetted a tad fatter..

same damm basic engine

wow..thats a lot of tourqe for a 454

 

[MiamiOffshore]

Yea that is a bit more than I anticipated for a stock 330hp ...

 

[Pismo10]

That's 285hp at 3200rpm..Hmm

 

[htrdlncn]

I know my later 7.4 Merc was 310hp/450 ft lbs of torque.

To put it in perspective going from a 300hp 350 to the 310hp 454 my Chapparal picked up
4mph just due to the fact I could run a larger prop and still get on plane due to the extra torque even though both engines made same hp. It actually got on plane much easier even with the bigger prop.

 

[Pismo10]

I know my later 7.4 Merc was 310hp/450 ft lbs of torque.

To put it in perspective going from a 300hp 350 to the 310hp 454 my Chapparal picked up
4mph just due to the fact I could run a larger prop and still get on plane due to the extra torque even though both engines made same hp. It actually got on plane much easier even with the bigger prop.

Nothing like a big block for torque..