Cat C13 vs Cat C15: why pay more?
#11
11-25-2006, 02:28 PM
The way those spec sheets work is you start with a base truck with no upgrades, with it's price and weight.
As you ad upgrades like the bigger engine... it ads cost and weight to the base or generic truck. That's the figures your seeing, Cost and weight over a stock engine. edit: The zero's represent a standard part included with the base truck, with no increase in weight or price. My C-15 was 719 lbs over for an 01 model...pre Acert. My sheet doesn't show the cost, but they have gone way up it looks like. 
#12
11-25-2006, 03:32 PM
Originally Posted by Bobby
The way those spec sheets work is you start with a base truck with no upgrades, with it's price and weight.
Originally Posted by GMAN
That engine price is hard to believe. It can easily cost more than that for an in-frame. If that is all they cost, then it would be better to just throw the old engine away and buy a new one to drop in when you need a new engine.
#14
11-25-2006, 04:41 PM
Originally Posted by marylandkw
Hopefully I don't get flammed for this one but here goes....
Bigger Motors get BETTER fuel economy. That C-13 will be working it's exhaust pipe off to make those numbers. The C-15 set that low will barely be working. Now I drive conservatively with a C-15 rated at 550hp with 4.11 rears and an 18speed and get 7mpg all day and night. I don't know how much a C-13 costs now a days but the spec sheet in front of me for my new truck (should have it in a week or two) says the C-15 weighs 941 pounds and the line item cost is $12,874 Now coming home from Sacramento I just get passed by most other rather than all.
#16
11-28-2006, 03:03 AM
According to Cat's web site these 2 engines weigh:
Cat C13 Cat C15 2270 lbs. 2890 lbs. Some posts here referred to much smaller numbers.
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#17
11-28-2006, 03:21 AM
Originally Posted by 60363
According to Cat's web site these 2 engines weigh:
Cat C13 Cat C15 2270 lbs. 2890 lbs. Some posts here referred to much smaller numbers.  , it was just the difference, between "base" and "optinal"! :wink:
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#18
11-28-2006, 05:14 AM
Re: Cat C13 vs Cat C15: why pay more?
Originally Posted by 60363
Cat C13, Multi-torque
80,000 lb GVW 430-hp, 1550/1750 lb-ft 1325 rpm @ 65 mph Cat C15, Multi-Torque 80,000 lb GVW 435-hp, 1550/1750 lb-ft 1325 rpm @ 65 mph
#19
11-29-2006, 02:09 AM
allan5oh
Peak torque for both C13 and C15 in these configurations is the same: 1,200 rpm. BUT: C13 with 430 hp and 1550/1750 lb-ft of torque shows TORQUE RISE as 44%/63%; its maximum HP is 445; while C15 with 435 hp shows TORQUE RISE as 43%/61% and its maximum HP is 450. Cat C13 with 470 hp 1,650 lb-ft of torque has 40% TORQUE RISE. Cat C15 with 475 hp 1,650 lb-ft of torque has 39% TORQUE RISE. As you can see there's no big difference still. But: Cat C15 500 hp 1850 lb-ft of torque has ... 56% TORQUE RISE.
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