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| | | | Joined: Feb 2005 Posts: 90 Shop Shark | | Shop Shark Joined: Feb 2005 Posts: 90 | When someone mentions in an ad 318 Detroit, are they saying cubic inch, 6v-53 comes to mind, or horsepower? If memory serves, I remember seeing a brochure that showed 318hp for a 8v-71. Any ideas? | | | | | Joined: Jan 2006 Posts: 127 Wrench Fetcher | | Wrench Fetcher Joined: Jan 2006 Posts: 127 | Yes a 318 is a 8V-71 = 8 cyl. V block 71 cub in per cyl | | | | | Joined: Feb 2005 Posts: 90 Shop Shark | | Shop Shark Joined: Feb 2005 Posts: 90 | | | | | | Joined: Jul 2006 Posts: 707 Shop Shark | | Shop Shark Joined: Jul 2006 Posts: 707 | An 8V71N in a highway application is rated at 318 bhp.
The 8V71T was 350 bhp. It had a little turbo that blew into the supercharger. Didn't really make much difference. Even the 318 was optimistically rated, but it was a stronger engine, I think. I drove one with N-90 injectors that was governed at 2600 rpm and would blow the doors off a 350 detroit, and it threw a 1' flame out of the stack on a long pull. I think it went about 280,000 miles before it ate its blower, and those were largely full-throttle mountain miles.
1951 3800 Be the change you want to see. -hotshoe
| | | | | Joined: May 2005 Posts: 8,878 . | | . Joined: May 2005 Posts: 8,878 | Yes, 318 is the horsepower on an 8v71N commonly used in trucks. With brown tag N65 injectors if I recall correctly.
There are many many other horsepower ratings for the same engine depending on injectors, turbo, or turbos, aftercooler, RPM, and other things.
Anyone seriously interested in Detroits should find a copy of a "Field Service Data Book", a small notebook printed by Detroit with all kinds of good info including HP ratings for different engines. | | | | | Joined: Dec 2002 Posts: 3,441 Moderator - The Electrical Bay | | Moderator - The Electrical Bay Joined: Dec 2002 Posts: 3,441 | I recall hearing that the 6V53 was a 318 cid motor... putting out about 250-275 horses..
Another quality post.
Real Trucks Rattle
HELP! The Paranoids are after me!
| | | | | Joined: May 2005 Posts: 8,878 . | | . Joined: May 2005 Posts: 8,878 | The very latest 6V53TI engines for the military put out 400HP. They are electronicly controled and have a turbo, an intercooler, and perhaps aftercooler, I forget.
The only customer still allowed to buy new two cycle detroits is the military. Otherwise the last one we could buy was made in 2000. | | | | | Joined: Dec 2002 Posts: 3,441 Moderator - The Electrical Bay | | Moderator - The Electrical Bay Joined: Dec 2002 Posts: 3,441 | Back when I was still wrenching on LAV's, I could tune a 6V53T as good as the next guy, if not better... zero deflection in the rods is the goal..
Another quality post.
Real Trucks Rattle
HELP! The Paranoids are after me!
| | | | | Joined: May 2005 Posts: 8,878 . | | . Joined: May 2005 Posts: 8,878 | I just did a search for the spec sheet about the 400HP 6v53, no luck. Perhaps they are no longer sold to the military?
Is this the end of the 2 cycle detroits? | | |
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