Just need a bit more

[dvw]

Since I haven't run a 904 under big power I can't say. Obiviously the clutch pack, bands, and sprag are up to the task. I have a friend that's run one in a 10.50 N/SS car for years. But I don't know if it has the stock output shaft. Paul Forte at Turbo Action could give you and idea on the converter threshhold limit. There are a lot of strong small blocks using 904 stuff that make good power. As far as the tiny tunnel. I'd make it big. Not that tough. Early B body has a small tunnel as well. Best thing I ever did was make it larger.
Doug

 

[ozzymaxwedge]

Hi again ,
An update, we have just run a PB 9.52. @ 141.70 , basically 2 tenths and 3-4 mph better, main change was 200 lb weight loss and some Indy tunnel porting.
To refresh memories the car is a street strip Aussie 4 door Valiant 440/528, na on 235/60/15 radial rubber.
Our Drag Challenge 5 day event is end of October and we are pumped. We have been runner up in our class twice so very happy to be running quicker.
New valve springs going in and larger squirters should be even better

 

[davek]

Hope all gos well and good luck please post some pics of the event if you have time.

 

[Tex013]

Hi again ,
An update, we have just run a PB 9.52. @ 141.70 , basically 2 tenths and 3-4 mph better, main change was 200 lb weight loss and some Indy tunnel porting.
To refresh memories the car is a street strip Aussie 4 door Valiant 440/528, na on 235/60/15 radial rubber.
Our Drag Challenge 5 day event is end of October and we are pumped. We have been runner up in our class twice so very happy to be running quicker.
New valve springs going in and larger squirters should be even better

better buy some laundry

Tex