Hi.

I'm gonna start to build a new engine for my -80 Aspen and would like to get 450-500hp. Any help I can get would be nice. I will use a roots supercharger e85.

Thanks.

Welcome!

At the boost required to make 450hp you're better off with a turbocharger or a screw compressor than a Roots blower.

While there are some very fast carbureted turbo cars many (most?) use alcohol injection as a supplemental fuel and detonation suppressant. EFI I feel is a good choice as it gives a lot more control over fuel and ignition which helps keep pistons and head gaskets healthy.

I highly recommend spending some time in the boost and nitrous section and reading about head gaskets, o-rings and head studs.

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Joshua

You may want to give serious consideration to beefing up brakes and suspension with that kind of power.

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67' Dart GT Convertible; the old Chrysler Corp.
82' LeBaron Convertible; the new Chrysler Corp
07' 300 C AWD; Now by Fiat, the old new Chrysler LLC

Being conservative?
Only 450-500 HP?

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-MattMan
LEANED & MEAN

To start with

Yes I will upgrade because I think the 100hp is almost to much for the brakes and suspension.

Does anybody know wich block is stronger or if they are equally strong.
the one with 3 or 5 freezeplugs?

In all honesty, there really isn't much difference between blocks.

What blower are you going to use?

Member terry littlejohn is using a 6-71 and can probably be a lot of help to you.

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Official Cookie and Mater Tormentor.

I was actually thinking of using a 6-71

...is this a strip car or a street car? 450+ hp from a slant is awesome. If a strip car, people will be impressed (as they should), but if a street car, people will be in awe, jaw-dropping power from an I6....love it.

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https://tinyurl.com/yynpj4v2

Terry might be using a 4-71.

Seymour had a buddy with a 4-71 back in the late '90s. IIRC, it made well over 400 back then.

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Official Cookie and Mater Tormentor.

It will be a street car there are a couple of people in the city close to where i live that say the slant is a crappy engine(they have 320-360 V8 with under 350hp)So I want to se their reaction when the car is ready.

The Slant 6 seems to respond very well to boost. We hope your project goes very well! There are a few other cars in Scandinavia (Finland included) on this site.

Lou

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Home of Slant6-powered fun machines since 1988

Here is an interesting site that may help.

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67' Dart GT Convertible; the old Chrysler Corp.
82' LeBaron Convertible; the new Chrysler Corp
07' 300 C AWD; Now by Fiat, the old new Chrysler LLC