Small Block V4

Repost?? Don't care. . . .

DOES WANT!!

LS7 V4 Motorcycle

Can you imagine the Kit cars powered by this thing??

I dig it on many levels - The fact that it is light and powerfull, yet used pushrod technology for one, but especially because it is set up to easily accept a BELL HOUSING and Car Tranny! The specs they post seem at a very low level tune. It should have vast upside. Unfortunately, I fear that it'll also cost about 15 large Not exactly locost.

That would fit in my TVR. But then again, so would a V-8.

Wow...Direct injected too.....

Brian

The first thing I thought of was that would make a killer swap in a V4 Saab. Like maybe these.

Can you imagine the cost tho?

Neat, a V4 with pushrods that costs 50% than the V4-powered motorcycle I rode to work on today (actually I paid a lot less but that's another story), the one with an engine that's based on World Superbike winning designs.

Doesn't this kind of money get you that Hyabusa based V8?

Probably . . .a lot LOL!!

But it's still cool that they are building it. I'm thinking 8-12K (eh . . . probably very wrong) . . . still MUCH cheaper than the 'busa V8 (aren't they still in the 20K range??).

Yeah, it's cool, but hard to imagine a good use for it when you consider shape and size, power output and cost. And I don't think the power numbers are all that low when you consider parasitic losses.

Well given it's obviously very robust construction, and the fact that it makes peak power under 6K and has 2 balance shafts, it's hard to imagine that there isn't a big upside. Unfortunately it's still a boutique motor, so we're talking boutique prices - and given the GRM forum's Wal-mart demographic......

I guess we don't know the cost of the motor and I don't know if they'll be widely available on a pallet; probably only really available with a bike wrapped around it.

Honda's latest pig of a VF, the 1200, makes similar horsepower but not nearly the torque. Yamaha's current VMax has the power and torque to compare and also similar CC's. The 800cc unit in my Interceptor VTEC puts out about 58lb-ft of torque and they seem to dyno around 100hp from 800cc. So this Chevy style V4 seems to be putting down decent numbers for it's displacement and probably won't be terribly peaky with all that torque. I kind of doubt there's much easy power on the table just waiting for a better exhaust or more "something".

Seems like the perfect swap for an N/A 13B

Locost engine?

seems like it belongs in the trunk of something that currently only has the front wheels powered...except what kind of transaxles could bolt to it?

In reply to Pumpkin Escobar:

We'd need real information on that crankshaft flange (what flywheels work?) and the bellhousing side of the block (what bells/transmissions bolt to the thing?) before really getting an idea of what this thing fits into.

I doubt it goes 60* V6 style bellhousing but if it does, wouldn't that make it a great fit into a Fiero?

In reply to pres589:

given its torque peak at 6k and HP:torque ratio is good, Id say HELL YES!

Bobzilla wrote: Locost engine?

Well considering the engine isn't Locost it sorta defeats the purpose.

In reply to ReverendDexter:

If you're going to do that, it's better just to go the full-sized LSx route.

Pumpkin Escobar wrote: seems like it belongs in the trunk of something that currently only has the front wheels powered...except what kind of transaxles could bolt to it?

Or maybe in the trunk of something that already has it's engine back there? Seems like it'd make a pretty awesome swap for a VW Bug.

140/120 @ the crank equals 118/105 @ the wheels....

so 30 years of advancement can now offer you a push rod engine that makes the same power as a none variable timing inline 4....

oldeskewltoy wrote: 140/120 @ the crank equals 118/105 @ the wheels.... so 30 years of advancement can now offer you a push rod engine that makes the same power as a none variable timing inline 4....

At half the weight. That's the key part.

In reply to ReverendDexter:

a 4AGE weighs 200#s...

for what that engine will probably cost, you could probably get a Boss Hoss with an actual LS engine.

It would look real good in the nose of a home built airplane.

There was a guy years ago making a SBC based air cooled V2 bike. I saw one in Sturgis around 1990.

Oh, and oldeskewltoy, my 4AGE 20v, fully dressed except for the AC compressor, weighs 300 lbs. Add 10 lbs because that's with an aluminum flywheel.