Re: Change of Engine Plans?
 

I have an AW324. Will the Cooler make that much of a difference?

Re: Change of Engine Plans?
 

its 2/3 as big,you can't run as much boost as you could on the same octane (procharger used to say you could run 6 psi boost on 89 octane with aw504 vs 6 psi of boost on aw324 w/91 octane so maybe turning boost up with your innercooler much past 7 or 8 psi would require higher octane then you could buy at pump,Smitty

Re: Change of Engine Plans?
 

is your procharger a m-1 or m-3?

Re: Change of Engine Plans?
 

you also really shhould have a 12 rib drive to turn boost up much so belt won't slip,I imagine if you have a aw324 you probably have 8 rib drive also,Smitty

Re: Change of Engine Plans?
 

M1 and I think it is 8 rib.

SO you think a larger cooler and a 12 rib set up with my upgraded injectors and . . .???

Re: Change of Engine Plans?
 

If your running a m-1,8 rib drive and aw324 innercooler you could turn up the boost some with your 454 but you will have to calculate how fast your turning the blower. A m-1 is rated for 1400 cfm at 57,000 rpm's,a m-3 is rated at 2200 cfm at 57,000 rpm's.You can spin your supercharger past its limit (I do) but at a certain point it will create alot of heat and parasitic loss.I'm not sure how much you can gain on your 454 with a m-1 as I'm not a expert at this,just have some limited experience from my own. I can tell you the pulleys that made 8.5-9 psi of boost on my 502 w/m-3 only made about 6.5-7 on my 540,I hade to re-pulley to get same boost because of the cubic inches. You would have to spin the m-1 to the moon to make much boost on a 540,its really too small.My 540 only made 630 hp/700 ft lbs tq on dyno the first time between conservative timing,not enough boost and restrictive exhaust ports on my merlin iron heads. My boat ran 74-75 mph with motor directly off the dyno,it ran 79-80 mph with 502 with SAME HEADS,PULLEYS AND EXAUST,so my 502 was probably closer to 700 hp. I re-pullied the blower to turn up boost,switched to a 12 rib drive,turned up timing in 2 degree increments and was able to get boat to run 82-83 normally loaded and 85 with light load so by most estimations was somewhere around 750 hp/800 ft lbs tq,was still running 43 lb injectors with fuel pressure just about at 80 psi. I exstensively modified the mpi intake,switched to 62 lb injectors,thermal coated the parts,switched to afr cnc'd heads that flowed 25-30 % more than merlins,re-cammed,went from lightning headers to stainless marine hi tq 3's and made almost 950 hp and over 950 ft lbs tq,boat now runs 89 mph w/1200 lbs of fuel and passengers and has seen 92.8 2 passengers and 1/4 tk of fuel. Heres a dyno sheet showing old 540 numbers and new ones,Smitty

Re: Change of Engine Plans?
 

Arctic,,,

those are some awesome numbers. I will be giving ya a shout when installing my 509cid Whipple and turning the boost up.

Now,,,to get a hold of that dead beat marine mechanic and get my stuff back!! :mad: I can't even get him to return my calls again!! :mad:

Re: Change of Engine Plans?
 

AF, Did you get that stellings box on yet?

Re: Change of Engine Plans?
 

Its on the boat,motor is back in and aligned,rebuilt the gimbal today,just put it on,my son is putting the manifolds,tailpipes and blower back on the boat as I type and I just tore the lower unit down the rest of the way and washed it. I just came in to eat,when I go back out I'm assembling the lower unit with the gears I had heat treated locally and then I'm attaching lower to upper,installing it on the boat then I have to mount the rams and drill/thread the rest of the ram mounts. Might see the water tommorrow :D ,Smitty

Re: Change of Engine Plans?
 

Here is some mild Cubes for ya, lots of room to make alot more power.

Mild Power


Cougarman