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Crusader Model 270 Marine Engine - Need help identifying

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pvoss

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I have taken 2 Crusader Velvet Drive Model 270 engines out of a boat. I am not sure if they are 454 engines or not. The model # is CH270. I have the serial numbers 33017 and 33015. Thank you.
 
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The Crusader model number CH270 is a Chevrolet 350 cubic inch engine. The 270 portion of the model number is the horsepower.

Crusader also made a model CH350 which is a 454 cubic inch, 350 horsepower engine. There's no end to the confusion those model numbers created.
 
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Thank you. I was a bit confused as it requires 93 octane for fuel The engine is around the mid-60’s.

DJR said:
The Crusader model number CH270 is a Chevrolet 350 cubic inch engine. The 270 portion of the model number is the horsepower.

Crusader also made a model CH350 which is a 454 cubic inch, 350 horsepower engine. There's no end to the confusion those model numbers created.
Click to expand...
 
I have Crusader CH270 engines in my 1977 boat, and I am 98% certain they are original based on the casting dates of the blocks, heads, and intake manifolds. My serial numbers from the Crusader plate near the flywheel are 24030 and 28676.
 
Thank you for your time. Appreciate it.

DJR said:
I have Crusader CH270 engines in my 1977 boat, and I am 98% certain they are original based on the casting dates of the blocks, heads, and intake manifolds. My serial numbers from the Crusader plate near the flywheel are 24030 and 28676.
Click to expand...
 
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