Do I need to lift the engine out to change to performance exhaust system ex Gill/Hardin or Revolution Performance exhaust???

I have a 242 SS 1988 with a 1997 454 330 hp stock exhaust

What is the best choice of performance exhaust system?

CP Performance Gill/Hardin system us 1999,- incl. full instalation pack. Should increase aprox 20 Hp and better torque. (Claimed by seller)

or

Revolution Marine Offshore performance exhaust us 1500,- include full instalation pack. Should increase aprox 30 -35 hp
Claimed by seller)

Innputs, oppiniones are appreciated

Pull the motor, makes it very easy to hang the new pipes, you can also check for other problems with a 1988 boat, check drive coupler for wear, check mounting hardware, replace your raw water pumps while it out , starter etc...- You will be happy you did

What James said makes sense, but to answer your question, no you do not need to lift the engine out.

Thanks for your reply, It is a good idea.

Thanks for the reply

Which exhaust system of the two would you go for??

I have the Gil set-ups on my motors and like them. I have a pic floating around somewhere, if I can find it I'll post it.

I don't know anything about the Revolution system.

Nice boat and dog you have

My boat and my dog are smaller than yours,

Both are nice though

Are the claimed HP increase of 20-35 really true if changing to a performance exhaust system on a 330 HP ?
Do you want to change exhaust because the current exhaust is in a bad condition and it really needs to be replaced soon, or is the current exhaust in good condition and you only want to change to gain more power ?

Hi my Scandinavian nabor, how are you?

Well first question I realy do not know, if the increase is really true. I have been in contact with several suppliers and they all claim that there are around 20 - 40 hp gain by changing from stock to performance exhaust, depending on wich one u choose. Also that you get better torque and that crusing speed and top spedd should increase. But how mouch is hard to say, they have mentioned 2-4 mph but hard to say. The different performance exhaust are between 60 to 80 pounds lighter. (I have of course informed that my engine is 454 330 hp bravo 1)

I belive that my stock exhaust are more or less ok, but the exhoust gasket on the left side is broken. So it need to be changed, I realy do not the exact status of the manifoild and rasors.

I guess I would with my new Mirage 21 pluss would like to see
some more mph and power

Pictures of hardin/gil and the revolution performance exhaust

I am not sure witch one I would go with but, remember you need to relocate your oil filter, shift interrupter and cables and anything else.