Class 7200 Engines

[philofab]

The Nissan VQ35 and VQ37 are very light, 300+ HP stock, and cheap to buy....

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[Neal Mason]

Under drive is what is important in this equation. The 3.7 is great and revs to the moon in stock form but the under drive is the mojo! The 2 together will kill the 4.5. 250 hp to the wheels with 37's th400 and Dana 60. 4.5 cost as much as the under drive and 3.7 per year to maintain.

I would not quite call 250and hp to the tire killing a 4.5 on the Danzio dyno Caspinos put 334 hp and 311I torque with no underdrive. But it is not cheap.

[LaMonte]

Here is a under drive unit the Factory Nissan 7 trucks used in the early 1990s

Its made to mate with with the Nissan VG 3.0 blocks, Bill Savage designed it.

1:5 to 1:0 under drive

[philofab]

Looks like a v-drive unit......

[Jerry]

I would not quite call 250and hp to the tire killing a 4.5 on the Danzio dyno Caspinos put 334 hp and 311I torque with no underdrive. But it is not cheap.

Sorry wasnt refering to the HP numbers. I was refering to the whole motor dying out because of expense and lack of new parts.

[LBug1]

Valve Train don't like the revs. Had a discussion with warren Johnson about the cady motor. He said no do. It won't last. Thus this is why backusis changing over to a race motor like configuration.

[indefab]

anyone successful on a built toyota 3.4? I like em better then 4.0s. dont know why besides $
for cost I think its still a good option for someone who isnt going for a bitd championship or anything crazy yet.
we are just looking for something that will run hard all day so we can get the camino out there and testing.

I always wondered why there was no LS series V6 motors

Seems like a 4.3 should still be a decent platform in the right builders hands.

[mexracer10]

We built a very reliable and pretty strong 3.4 on the racing 905 class 7 truck, mild cams, sds management system, and a few small mods, the engine is going strong and works very well for not being an all out race engine. It is under powered when compared to other v6 race engines.

[shock pros]

We we're talking about this the other day Pete, the Toyota 4.0 having good top end, the Chevy 4.3 having better torque, but I'm curious to see some numbers on the Ford Mustang 3.7 after a little bit of help (headers, intake components, maybe computer work, etc).

[Salvador]

We built a very reliable and pretty strong 3.4 on the racing 905 class 7 truck, mild cams, sds management system, and a few small mods, the engine is going strong and works very well for not being an all out race engine. It is under powered when compared to other v6 race engines.

On dezertrangers Jerry Larimore post that made 229 Hp to the tires, thats with a build TH400 tranny, TT Rear end, with 37 tires.