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View Full Version : my 94 205 is a GM or Ford


sp00ky
07-30-2011, 07:08 PM
Just bought this boat 2 weeks ago is this EFI NON-LT1 a Chevy vortec?

03 35th Anniversary
07-30-2011, 07:23 PM
Just bought this boat 2 weeks ago is this EFI NON-LT1 a Chevy vortec?

I think 94 had both Ford and GM, but by 95 it was all GM.

Post a pic up and someone can tell you real quick!

east tx skier
07-30-2011, 07:29 PM
94 OEM was all Chevy.

sp00ky
07-30-2011, 08:17 PM
I took off the rusty crankcase pulley cause it was eating belts. we've put 14 hrs on it in about 2 weeks. stripped and painted the pulley hope that helps.

Pulley is missing in pic

03 35th Anniversary
07-30-2011, 08:32 PM
I took off the rusty crankcase pulley cause it was eating belts. we've put 14 hrs on it in about 2 weeks. stripped and painted the pulley hope that helps.

Pulley is missing in pic

Chevrolet 350/5.7L

JimN
07-30-2011, 09:58 PM
Non Vortec GM 350. By the looks of it, you need to prop the motor box open and provide better ventilation for the engine/bilge during long periods of storage.

sp00ky
07-30-2011, 11:38 PM
Ok thanks for the info. What makes it a vortec? Did MC use a vortec engine which was not the LT1 in 94?

wheelerd
07-31-2011, 03:21 AM
Simplest way to distinguish engines:
- GM has distributor at the rear
- Ford has distributor at the front

GM introduced the 5.7 (350) Vortec in 1996. MC began using it in 1998 IIRC.

JimN
07-31-2011, 09:25 AM
Ok thanks for the info. What makes it a vortec? Did MC use a vortec engine which was not the LT1 in 94?

The main difference is in the heads but the Vortec also had roller cam/lifters so, if you see the specs for older and newer TBI boats, the HP is higher for the ones with Vortec. The easy way to see if it's Vortec is to look at the intake manifold bolts. If they go in perpendicular to the head/intake mating surface, it's not Vortec and if they go in plumb to the vertical center line of the engine, it is. If it has a Vortec engine, it wasn't OEM.

Engine Nut
07-31-2011, 10:23 AM
The current engines use pulleys turned from aluminum billet. If cleaning up the pulleys doesn't resolve your issue, you can always upgrade to the current style that will not rust and will always stay round.

wheelerd
07-31-2011, 11:55 AM
The LT1 was/is not a Vortec engine. There were many differences, the most notable being the reverse-flow cooling. GM introduced it in 1992 in the Vette. (This engine is not to be confused with the earlier LT1 from the muscle car era.)
Mastercraft began using the LT1 as a limited option in 1992. You can read more of the engine use history at http://www.mastercraft.com/teamtalk/showthread.php?t=29236

sp00ky
07-31-2011, 09:34 PM
Thanks so much for the info. I was feeling kinda stupid not knowing what the engine I have.
I saw new AL pulleys at skidim.

Thanks again.

Double D
07-31-2011, 10:08 PM
I took off the rusty crankcase pulley cause it was eating belts. we've put 14 hrs on it in about 2 weeks. stripped and painted the pulley hope that helps.

Pulley is missing in pic

I have the same boat with the same engine, minus the nice flame arrestor cover. Not the best picture.
But its a 350 Cubic Inch Indmar Chevy with Throttle Body Fuel Injection and 275 Horsepower

east tx skier
07-31-2011, 10:36 PM
Looked like there might have been some confusion earlier, but as Jim mentioned, this is not a Vortec engine. Those didn't show up until 98.

sp00ky
08-04-2011, 03:08 AM
Cool I like the boat. Trying to mold my wife into the perfect driver. She still hates pulling me slalom at 36. But if I don't micro manage she does good.

mayo93prostar
08-04-2011, 08:39 AM
You may want to add perfect pass to make it easier for your wife and more consistent for you. They say it saves a lot of marriages.