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-   -   my Subaru will beat with a Buick heart! (

frank_ster 06-19-2010 06:20 PM

my Subaru will beat with a Buick heart!
So next week i will begin swaping in a 1987 buick 3.8L v6 in to my 05 legacy gt.

I thought long and hard about this. Reasons being cost to build 600 hp subaru engine a lot ! at least 6 grand.

specs of the 3.8 buick engine

230 ft lbs tq at 1900 rpm no boost
550 ft lbs tq 3800 rpm @19 lbs boost
3.5" stroke
3.8" bore
cost of parts motor 200$
crank shaft and connecting in stock form good for 750 hp
cost of race roller cam shaft 250$
450$ for set of weisco pistons
200$ for set of cometic head gaskets

Installation : the stock dbw throttle body from the legacy will be used,
motor plate will be fabricated, and then mated to the 5eat with rwd/4wd conversion and automation direct plc will be used for full manual shifting.
Mega squirt fuel management.

12 36# lb/hr injectors and factory buick ignition system. Fed by holset hx 35w turbo.

stiwanabe 06-19-2010 06:27 PM

interesting concept...

TRSCobra 06-19-2010 06:34 PM

I'm sure it's like 300lbs heavier though. Watch out understeer!

frank_ster 06-19-2010 06:36 PM

maybe 40 lbs heavier.

TRSCobra 06-19-2010 06:41 PM

How does an iron v6 weigh only 40lbs heavier than an all aluminum h4??? And you're probably gonna need a cowl induction hood to clear that taller engine.

Vitamin_G 06-19-2010 06:43 PM

6 grand would be cheap for a reliable 600HP Subaru!

frank_ster 06-19-2010 06:47 PM

it fits under the hood ..
the h4 is pretty heavy compared to an all aluminum I4. Yes it will be heavier but i'm willing to make that sacrafice. witch is also easily over come by larger rear sway bar.

quick4dr 06-19-2010 06:56 PM

sick build idea. I had a 98 pontiac GTP with the supercharged 3.8l making 247whp and 28xwtq, ran a 13.3 great motor to build with. im sure using a zzp turbo kit on it, mated to a legacy body would call for real quick ride.

scoobydoobie 06-19-2010 07:20 PM


CwhillVT 06-19-2010 07:22 PM

subscribed, this will be interesting. GL

underpowerd 06-19-2010 07:38 PM

i'm in; lots of pics plz.

Chameleon 06-19-2010 08:06 PM

subscribed....lots of pictures must be taken


joeleodee 06-19-2010 08:28 PM

This is definitely intriguing. I've always loved that powerplant. BTW, where did you find the parts at those prices?

brilliant sleeper 06-19-2010 08:50 PM

Never would of thought of a Buick motor going into a LGT. Wild concept. Definitely subscribed.

busabusa 06-19-2010 08:52 PM

GL with build

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