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Does anyone know what years the el tigres had the quad plugs? Were they a special race sled or did they sell them from the factory stock like that? Did they only come on 440's or 400's ? Would it be difficult to find one of these sleds for sale ? What would be the price range of a sled like this ?thanks, info would be nice.
 

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They started in 73 even think a few 340's had them that would be the rare one. All the 400-440 had them pretty common and easy to find. They were just a trail sled a down grade form the year before EXT. Seen them go for 300-600 for a nice runner to 2000 for a mint show sled
 

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73 Formula II was a T7290
73 EXT's were all T7's
73-74 El Tigre 400 & 440's (the 250,295 and 340's were all T1's)
75 El Tigre (all of them)

Special T7's
75 El Tigre Z - big finned cylinders and heads

The problem with T7's is that the rods are hard to find if you need to replace them. The crank shops have the rods pins cast into them, so if the pin is marred up or rusty, you need to replace the entire chop.

Waldo
 

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<div class='quotetop'>QUOTE (Uncle Wally @ Mar 19 2007, 04:57 AM) <{POST_SNAPBACK}></div>
73 Formula II was a T7290
73 EXT's were all T7's
73-74 El Tigre 400 & 440's (the 250,295 and 340's were all T1's)
75 El Tigre (all of them)

Special T7's
75 El Tigre Z - big finned cylinders and heads

The problem with T7's is that the rods are hard to find if you need to replace them. The crank shops have the rods pins cast into them, so if the pin is marred up or rusty, you need to replace the entire chop.

Waldo[/b]

Wally nailed it. Nice job.. :bleedgreen

I would clarify by adding the stock El-Tigre trail sleds of 73/74 were not set up as hot and had thicker castings than the EXT engines of 1973 and or 1974 MOD update kits. However Cat offered mod kits for the Tiger to run in mod stock for 1973/1974 as not everyone had the rarer 1973 EXT, and these added a nice boost in power. Also don't forget the MONSTER 650 T8 6 plug triple of 73/74. Man do they ever sound nice! The entire idea behind the twin plug deal was to get a bigger fireball in the chamber, and more pop. People argue over the merits to this day, but they look cool!
 
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