lightest route to 400HP

The Rover can get there, with a turbocharger.

I'd doubt any naturally aspirated power output beyond about 310 from one of those; that's what the Brabham/Repco Formula One engines made. It's unlikely that you'll spin a street engine up to 8500.

Javelin wrote: Found this: http://www.35pickup.com/mulligan/weight.txt And immediately pointed out the one engine we all forgot about...

Assuming that's the Rover/Buick discussed above, I don't think we forgot about it... the OP mentioned it in the 3rd post in this thread...

tr8todd wrote: Turbos are good. My current project is a 4.0 Rover V8 with a turbo and megasquirt. Should be close to 400 HP, but I'm looking for something easier for another project I'm thinking about.

Yep, trying to get away from the Rover option on this one, even thou there are a dozen or so in the garage right now. After all, with a sig like tr8todd, is there any question what my favorite engine is? Flagged down a Mustang guy at a gas station yesterday and got a lead on an engine at least. He had a 94 with a 302 and an automatic. Turns out he is installing the exact combo I am looking for. It's a 349 stroker, aluminum heads, and a tremec 3550. I can have the stock driveline that's in the car now for real short money or he'll swap it for the labor on building him a roll cage.

Twin turbo GM, Chevy, Buick v6? Just the regular supercharged ones hit 300hp pretty easily...

In reply to chknhwk:

That's actually a fair idea. The 3800 is a pretty small motor. However, one Turbo should do it with less weight.

Actually, you can get a G13B to 300hp pretty easy, but 400 would really be pushing it. THose things are litereal featherweights.

Still waiting on that 385lb fully dressed 302

Bobzilla wrote: Actually, you can get a G13B to 300hp pretty easy, but 400 would really be pushing it. THose things are litereal featherweights. Still waiting on that 385lb fully dressed 302

Tell me more about this. Are we talking turbod? Dyno? a 300 hp G13B is going to weigh so little that it's almost worth the hit in hp.

yep, turbo'd.... let me find the eopic thread on team swift....

Hrmmm... good thinking Bob, i didn't think about the real featherweights.

Yoter 4efte might be worth looking into as well, but i think it's heavier than G13B. It's a bit stronger, though.

355HP OUT OF A 1.3L.

From this thread: http://teamswift.net/viewtopic.php?f=6&t=9156

25.7psi, 8100rpm power peak, 355hp.

Here's the car completed on a road course: http://www.youtube.com/watch?v=SUmgN-6VsIg

chknhwk wrote: Twin turbo GM, Chevy, Buick v6? Just the regular supercharged ones hit 300hp pretty easily...

Two turbos hanging off of an all-iron V6 is not going to be light weight.

OK, looks like a fully dressed G13B is 54kg's without trans.... so a fully dressed G13B is 119lbs. Holy crap. Even if you added 100lbs for turbo, cooler pipes, intercooler etc.... you're looking at ~200lbs for 300+hp.

I think we may have a winner winner chicken dinner here.

The next question is.... what RWD trans does it bolt up to?

92CelicaHalfTrac wrote: The next question is.... what RWD trans does it bolt up to?

Nah - that's a silly question. For that weight, the question should be:

What RWD trans will TWO of them bolt to?

In reply to Bobzilla:

Thoughts on the commonly available RWD transmissions out there for this thing? Like the Samuri 2WD unit or some of the other vehicles like it?

What about 2.0l ecotech out of the Solstice/Sky? I remember reading that those came in at like 270lbs from that thread were some guy was swaping one in a c4 Corvette.

Bobzilla wrote: OK, looks like a fully dressed G13B is 54kg's without trans.... so a fully dressed G13B is 119lbs. Holy crap. Even if you added 100lbs for turbo, cooler pipes, intercooler etc.... you're looking at ~200lbs for 300+hp. I think we may have a winner winner chicken dinner here.

Pretty impressive but I think the original poster wanted some TQ and a nice useable power band as well. But for a small lightweight car it should work well.

pres589 wrote: In reply to Bobzilla: Thoughts on the commonly available RWD transmissions out there for this thing? Like the Samuri 2WD unit or some of the other vehicles like it?

Well, he used a getrag 265 trans and an E30 rear axle assembly, but I am pretty sure he used an adapter plate made out of billet aluminum.

Greg Voth wrote:

Bobzilla wrote: OK, looks like a fully dressed G13B is 54kg's without trans.... so a fully dressed G13B is 119lbs. Holy crap. Even if you added 100lbs for turbo, cooler pipes, intercooler etc.... you're looking at ~200lbs for 300+hp. I think we may have a winner winner chicken dinner here.

Pretty impressive but I think the original poster wanted some TQ and a nice useable power band as well. But for a small lightweight car it should work well.

I'd say the powerband is usable, it's making 250hp at 5000rpms, and builds to 355 at 8100, but is still making over 300hp at 8500rpms. that's a pretty wide spread. Agreed, the torque is abyssmal.... looks like it makes a table top flat "curve" though.... just peaks at ~220ftlbs.

This engine in a Lotus 7 would be amazing.

Still waiting on that 385lb fully dressed factory 302.

Maybe you should buy one and weigh it.

dculberson wrote: Maybe you should buy one and weigh it.

i'M not the one claiming they exist.

Bobzilla wrote:

dculberson wrote: Maybe you should buy one and weigh it.

i'M not the one claiming they exist.

But you're the one still whining about it.

dculberson wrote:

Bobzilla wrote:

dculberson wrote: Maybe you should buy one and weigh it.

i'M not the one claiming they exist.

But you're the one still whining about it.

I just have an issue with people that make things up. A lot.