YouTube - Broadcast Yourself.

my chris craft needs this engine !

After a tough day at work, this video played through my home stereo makes me feel better. I'd gladly take a sponsorship from you guys!

TCStachowicz 3 weeks ago

So this engine uses sea water for cooling? Can it be made a closed system for salt cold water operation? Whats involved? Thanks!

aaadream 2 months ago

@aaadream Engine does have closed system on it, check out 1:06 in the video.

michiganmotorz2008 2 months ago

@michiganmotorz2008 The exhaust manifolds use raw or sea water right? How does it hold up in salt? Is it all Stainless inside? We use total enclosed cooling for manifolds and engine around salt water. That's why I was asking. Up on the Lakes and fresh water I can see that working fine. Thanks! I am always looking at other setups for ideas. Around heavy salt water engines and cooling systems take a beating.

aaadream 2 months ago

Phil, looking into the new 502, 8.2L mag 380hp with you guys at the moment, it'd be great to see one of these videos with your overview for it ??

-Nev

67Nifty 6 months ago

The bass line of that engine is incredible, I love the cam lope. Could you imagine that with a 3 litre Whipple Roots? :)

Teddytiger 1 year ago 2

can i take a motor out of an old truck and pop it in a boat?

Ryandavis33 1 year ago

@Ryandavis33 fuel gauge? I thought that was the countdown till you can floor it....10...9....8

Veikra 1 year ago

@Ryandavis33 you can put a marine engine in a car/truck but you cant put a automotive engine in a boat because marine engines are built with beefed up components intakes and exhaust manifolds will exchage tho

bowtie4ever96 7 months ago

Selman22, well duh?!!! It's water cooled exaust

derk648 1 year ago

i can see the fuel guage moving already!!

Fastsprinter87 1 year ago

WTF .. Is it usual to see the water coming out from the exhaust?????

sleman22 1 year ago

@sleman22 damnit! he must have blown the head gasket already :( haha. oh wait, how does a marine motor get cooled???? :)

intiractive 1 year ago

@sleman22 yes this is standard practice for marine engines. They suck seawater for cooling via a heat exchanger then the water goes into the exhaust to dampen the sound of the motor as these motors do not have mufflers unlike a car as you can hear. its a beast.

stdavross666 1 year ago

WTF 8.1 litres. It must drink petrol. Seriously.

tescofood 1 year ago

@tescofood well duh of course it will it's a 496 big block, when you put that engine in a boat, given you can afford the engine in the first place you don't care about gallons per hour, you want to go fast :)

cumminsturbofan101 1 year ago

just the engines torque might flip the boat

XP

Slooter3s 2 years ago

best engine sound on youtube

thompsonsub45 2 years ago 4

hey all,im a new boat owner now with a 30" scarab 1986,with 2 big block chevys,anyone here familiar with this monster?

TheWiseguy00 2 years ago

@TheWiseguy00 A 30 inch boat?? wow...with 2 big block engines? DANG!!!!!

Quadasaurus63 1 month ago

now thats chevy power!!!!!

YamahaRTXnumber1 2 years ago

that is one giant motor

30GB 2 years ago 7

Will this engine fit into a 1999 Fours Winns 254 Candia Funship? I have a 1999 Volvo Penta 7.4 Gen 6 in there now.

mikesgraphicservice 2 years ago

Yes, I need you to give me a call to discuss more in detail.

-phil

248-524-9600

michiganmotorz2008 2 years ago

The 8.1 is built off of a modified Chevy 454 (7.4) block, so it should be fairly easy.

firehawk400 2 years ago

NO the 8.1L is NOT built off a modified 454. Nothing internal or external from a 454 will work on a 8.1L. (other than the bell-housing) Two totally different motors. The only common thing is both engines are built via GM.

michiganmotorz2008 2 years ago 2

@michiganmotorz2008 The 8.1 is a 496 ci engine.I like them.

616ist 1 year ago

@michiganmotorz2008 What about bore and stroke and bore angle? Meaning the degree's of angle in the V? is this all updated to a completely different block?

kwaky2005 1 year ago

@kwaky2005 Good Question! Bore/Stroke 4.25x4.37(108 x 11 mm). Bore Center 122.94 mm, Bore Area 732.19 cm

-phil

michiganmotorz2008 1 year ago

@michiganmotorz2008 hey phill, i need to ask a few questions... i want to build either an 8.1L, or 7.4L for our suburban, im leaning towards 8.1L though... i keep on hearing about all of these marine parts, please enlighten me, if/when i build it, what parts should i upgrade to marine parts? i would assume you cant just use a full marine engine for a few reasons though...

smithkid1996 3 months ago

@firehawk400 No it's not. try to find where the distributor goes on a 8.1L. totally different engine and casting. The 8.1l replaces the 7.4l. Just like the 5.3 replaced the old 5.7

Veikra 1 year ago

@firehawk400 It's a 496

markeyjames22 1 year ago

imagine a turbo on it O.O HELL YEA CHEVY! and you problably could fit it on a car with heavy moding to the body

ChevysphinX 2 years ago

it said vortec on the cover, Hell yeah Chevy!!!

Tbolt1000TForLife 2 years ago 2

sick power :D

ekbwolf11 2 years ago

can you fit it in a car? Lovely engine that and certainly some power.

urbex2007 2 years ago

They use the 8.1L in some Trucks and RV's. This exact engine dressed cannot fit into a Car. It is setup for Marine use only.

michiganmotorz2008 2 years ago

@urbex2007 my 2001 Silverado 2500HD 4x4 has the 8.1 with a 6 speed manual behind it, hard to find but they are out there.

DontTread0nMe1776 2 years ago

dude, thats a 496. fast motor

mattschmit1 2 years ago

hey guys i live in miami woh much would cost to buy a running 7.4 merc with shiping from you guys? please answer as a reply comments cause i no longer recieve e mails through this e mail adres,.

gilles8602 3 years ago