What is it really going to take

[blazeracer]

Back in my retail part days we used to always sell headers first.  Without getting the exhaust out there was only so much you could put in. 

To answer the original post.. Back in the 80's we used to put in headers first because A) it was cheap at 120 bucks a set for Headmans and B) it was easy, like no need to pull the motor. Cheapest bang for the buck. My old 350 S10 ran iron manifolds from a van because there were no conversion headers at the time. We even had to grind a chunk out of them and weld in a plate to make a notch for the steering column. Later, I put on a nice set of heads that were gasket match and bowls blended on both the exhaust and intake sides and that motor came alive, even with the manifolds, which were also gasket matched with a dremel. Beyond the manifolds were 2 1/2" tubing with a crossover. Obviosly won't be doing a crossover in a boat, but gasket matching the logs, or at least port matching them, is most definitely in the cards.

Anyway, that was why we always went with headers first... LOL

 

[KONA77]

no arguement there,  not mention the cool factor  :smile27:

 

[Devilman]

Its kind of a mixed bag from what I've read about the inducers. Some people have good results, others don't.


Kind of like stuffer plates....

 

[JYBTX19]

Another chart I read but can't seem to find again showed that an AA impeller spinning at 4,900 rpm in a 400 pound slick hydro hull will push a properly set up boat at about 78mph. With that said, my goal is to spin an aa impeller at 4900 rpm using power. Have to get the hull to do the rest with stuff like straightening the bottom line and adding a loader grate. Not sure about an inducer, no one has yet to step and say how awesome they are. I already have a ride plate.

You will not ever push 70 MPH at 4900 rpm's.  :smile18:
Jeff's Glasstron never hit 80...

 

[JYBTX19]

I think after your upgrades to your motor, nominal pump work, and turning 6500 rpm's you will achieve your goal... :smile17:

 

[horsepower junkie]

James the jacketed headers are built by Lightning, can get'em polished or any color in powder coat, THEY ARE NOT CHEAP!!!. But well worth the money. Around 2k. The inducer will help load the pump but with out sufficient horse power it will hurt the performance of your boat. What is enough HP you say? every application is different but  rule of thumb is around 600HP. Hope this helps. or not. :smile17:

WFLC!!!

 

[Patchman]

James the jacketed headers are built by Lightning, can get'em polished or any color in powder coat, THEY ARE NOT CHEAP!!!. But well worth the money. Around 2k. The inducer will help load the pump but with out sufficient horse power it will hurt the performance of your boat. What is enough HP you say? every application is different but  rule of thumb is around 600HP. Hope this helps. or not. :smile17:

WFLC!!!

Don't listen to this guy, he is a junkie for horsepower! :grin: :smile30:

 

[horsepower junkie]

here is a link to the  headers

http://www.boatheaders.com/headers.htm

 

[Patchman]

Sweet! Do they make a big difference over logs? I would think they do, but haven't tried them! :huh:

 

[horsepower junkie]

Same as open headers :grin: :grin: but jacketed so no heat, can put your hand on the exhaust while running. oh wait you can't you got a hood

 

[Devilman]

Same as open headers :grin: :grin: but jacketed so no heat, can put your hand on the exhaust while running. oh wait you can't you got a hood

LOL...

 

[blazeracer]

You will not ever push 70 MPH at 4900 rpm's.
Jeff's Glasstron never hit 80...

I'm hitting 62 now at 5,400 RPM with an A impeller.. Never say never..

 

[Disturbed]

You will not ever push 70 MPH at 4900 rpm's.
Jeff's Glasstron never hit 80...

I'm hitting 62 now at 5,400 RPM with an A impeller.. Never say never..

:smile28:

 

[KONA77]

what's it really gona take.... just slap a rocket on it and some rocket fuel,  and let'er rip...  :smile26:

 

[overbored]

My thought would be to fix anything wrong in the pump first. Match the pump for the output of the engine. Remove all hooks and any accessories that add weight and don't add to power. Don't forget that windshield that is probably shaving about 8 MPH off the top end. Last but not least lay off the heavy foods. When I was racing my uncle always told me it was easier to shave weight off the driver than the car. How much gas was in the tank when James hit 62?

 

[TintMan]

My thought would be to fix anything wrong in the pump first. Match the pump for the output of the engine. Remove all hooks and any accessories that add weight and don't add to power. Don't forget that windshield that is probably shaving about 8 MPH off the top end. Last but not least lay off the heavy foods. When I was racing my uncle always told me it was easier to shave weight off the driver than the car. How much gas was in the tank when James hit 62?

Thats the best answer yet!  :smile16: So the mystery has been solved!!!! Remove the windshield and BAMMMMM-your at 70!!!! :smile17:

 

[KONA77]

and what ever ya do,  don't smile  :smile30:

 

[hellnback]

and what ever ya do,  don't smile  :smile30:

yeah if ya smile ya lose 3 mph from the parachute effect on the cheeks ..........  crap i said cheeks .... look out here's patch

 

[hellnback]

I am an azz but I don't want to seem like it! :grin: My daddy always told me to be good at something! :smile30:

and bless your heart you're still trying .....    :smile17:

 

[hellnback]

James the jacketed headers are built by Lightning, can get'em polished or any color in powder coat, THEY ARE NOT CHEAP!!!. But well worth the money. Around 2k. The inducer will help load the pump but with out sufficient horse power it will hurt the performance of your boat. What is enough HP you say? every application is different but  rule of thumb is around 600HP. Hope this helps. or not. :smile17:

WFLC!!!

carp shoulda said the other day at the pool  neverenuff has a decent set of 460 Basset twisty thru transom headers with all the lines and stuff CHEAP and they'll fit under the hood !