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Cummins Horse power ?
#1
I'm looking at a 2001 Tiara 3500 Express. The owner states the Cummins Diamond 6C 8.3 TA Horse power is 407 hp. I thought the 6CTA 8.3 was 420/450 hp. My question is, did Cummins make a 6CTA with 407 horse power?
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#2
There was a 400 hp 6CTA motor. Seems like a tight fit for a 3500. 6BTA would be the more expected motor. Both are good motors.


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#3
The 3500 Express built '95-'03 was supposed to be powered by 502 Gas.,Cats 435. cummins 6BTA 370 and cummins 6 CTA 420/450. The way the engine room was made, it had room for the large diesels. My question still is if cummins had a 407 horse power engine for the 3500. A 3500 exp. is being listed for sale with 407 hp. cummins.
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#4
my 98 has 6CTA CPL 2172, it is a 450hp version.. I dont think it made a 407 hp version, maybe ask for the engine serial number? The 6CTA is a best of an engine, wet sleeve cylinders, 6 in line and easy to work on. If you look at the test results on these engines, the 3500 express can reach 30+ knots at full rpm.
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