370,390,408

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Jul 20, 2014 | 08:19 PM

Chris'stransam

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From: Gainesville FL

370,390,408

Lets say if u where building a supercharged car for the street and shooting for 750 -900 hp with YSI or Novi 2200. What motor would u do with LSA heads and why . The car is m6 99WS6

Jul 20, 2014 | 08:59 PM

DEFYANT

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From: Okmulgee, OK

I wouldn't do a 370 unless you have an aftermarket forged crank to go with it. Personally, I would just do the 390 or 408 for more torque. The 390 is less susceptible to wear on the pistons, but personally I don't think a car that doesn't see over 10,000 miles a year will take advantage of it. I would just do the 408.

Jul 21, 2014 | 12:13 AM

Blown06

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408 no doubt for a supercharged engine.

Jul 21, 2014 | 01:21 AM

MUSTANGBRKR02

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From: Maine

Any of those will do. Plenty of supercharged cars over that hp with a stock crank. What is your budget?

Jul 21, 2014 | 04:36 AM

stevieturbo

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From: Norn Iron

Quote:

Originally Posted by Chris'stransam

Lets say if u where building a supercharged car for the street and shooting for 750 -900 hp with YSI or Novi 2200. What motor would u do with LSA heads and why . The car is m6 99WS6

What weight is the car, and is it primarily street use ? What sort of rpm range ?

I'd be inclined to opt for more rpm ability, less torque and go for one of the smaller options.

Ive had 346, 382 stroker and 403 when I had my YSi, ended up dropping back to a 382 again, albeit with a 4" bore and 3.825" crank.

Just didnt see any point or real world benefit in the 4" stroke, especially when traction on the road is virtually non existent anyway.

I'd go for a smaller motor, and get a cam that will allow a good solid 7000rpm or so. You'll have a wide spread of power, and hopefully more tractable on the street without lots of torque

Jul 21, 2014 | 06:43 AM

Chris'stransam

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From: Gainesville FL

I have 15k , and yes car is street use . It might see the track 1 or 2 times a month . The car is stock weight

Jul 21, 2014 | 09:07 AM

MUSTANGBRKR02

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From: Maine

A bunch of options with a budget like that. Any of those will do the job. Though I like the 370 or 390 a little more with the short sleeve length with the 408.