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    5 out of 5 members liked this post. Yes Reputation No

    Post VAC Motorsports | S65 4.4L / 4.6L Stroker Kit

    Click here to enlarge

    All VAC Premium Stroker Kits feature:
    a. VAC Motorsports 82.7 billet stroker crank
    b. Arrow Precision connecting rods

    From here you can buy the kit 2 ways:
    1. With drop in Mahle pistons for stock bore. Buy here

    2. With CP pistons and Darton sleeves. Buy here This requires a top level machine shop to fit the sleeves. We offer this service on our all new Centroid for the highest level of accuracy and consistency. PM for more info.

    Bonus: 4.6L capability! With these sleeves you can go to a 94mm piston, combined with the stroke yield a stout 4.6L S65.

    We generally always have cranks and rods in stock. We often have pistons in stock as well, though we run through these quicker so there may be a 3-10 week delay depending on manufacturer and demand.

    For those in a rush, we offer up to a 3 day expedite on CP Pistons. :-) No expedite on Mahle pistons.

    We have sold these to street, circuit, hill climb and rally clients. With and without sleeves. Low compression, high compression - the sky is the limit.

    Side note: We will have our 3.5L S65 cranks in stock soon. Another thread will follow ;-)

    A few dyno sheets:
    Click here to enlarge

    Click here to enlarge

    Click here to enlarge

    Click here to enlarge

    Click here to enlarge

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    That's an AWESOME power curve. Puts RD and Dinan kits to SHAME! The 13.5 CR graph is nuts - OVER 500 HP from 6500 to 8500 RPM! That's simply amazing - I want one. Click here to enlarge

    What's the deal with the 3.5L S65 crank?

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    1 out of 1 members liked this post. Yes Reputation No
    Click here to enlarge Originally Posted by inlineS54B32 Click here to enlarge
    That's an AWESOME power curve. Puts RD and Dinan kits to SHAME! The 13.5 CR graph is nuts - OVER 500 HP from 6500 to 8500 RPM! That's simply amazing - I want one. Click here to enlarge

    What's the deal with the 3.5L S65 crank?
    I would assume it is for higher revving applications.

    This 4.6 stroker kit really raises the bar for built motor potential. Well done VAC Click here to enlarge

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    Yes, I want to build one for in house use....just need to find some budget - haha.

    3.5L 9500+ RPM. Many race classes are limited by displacement....that is the solution.

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    Click here to enlarge Originally Posted by Mike@VAC Click here to enlarge
    Yes, I want to build one for in house use....just need to find some budget - haha.

    3.5L 9500+ RPM. Many race classes are limited by displacement....that is the solution.
    Amazing work. Bravo. Repped

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    Sounds awesome -- I remember a few months ago you had mentioned a VAC Stroker + VF Engineering Supercharger kit combo, just was wondering if there's any more details on this now that VAC's released their stroker kit Click here to enlarge
    COBB AP ProTune by Bren of ///Bren Tuning
    Akrapovic DP | Helix FMIC | Alpina TCM Flash | Walbro 450LPH Fuel Pump


    "The moment money becomes your motivation, you are immediately not as good as someone who is motivated by passion and internal will." -A. Senna

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    S65 stroker kit has been out for a while - just finally getting around to posting a pic and putting it on our site Click here to enlarge

    Oh, 3.5L S52 will be coming very soon..

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    Click here to enlarge Originally Posted by Mike@VAC Click here to enlarge
    S65 stroker kit has been out for a while - just finally getting around to posting a pic and putting it on our site Click here to enlarge

    Oh, 3.5L S52 will be coming very soon..
    S52?

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    Man that is just a dream. Maybe..........One Day......But first the S54 Click here to enlarge
    Click here to enlarge



    EURO 04 M3 Current Mods:GC DAs, Eibach Sways, PF RTAB's, RE RCAs, INTRAVEE II, Black Roundels, ///MFEST Badges, Depo's, Screen protector for NAV display, VCSL Bumper + Race Lip & CF Trunk & CF Rear Diffusor, DIETZ TV in Motion, SS= V1 Headers + catless pipes + X-Pipe + SS Sport Exhaust, Z8 Starter Button, Lamin-X, OEM CSL interior, OEM CSL Steering, OEM CSL Intake, OEM CSL Roof, MSS54HP + OEM CSL Tune, BBS CH's, LIGHTWERKZ, 355mm ST40 BBK, BW Oil Cooler....

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    Wow, awesome results! This is how the m3 with the s65, should have come from the factory!
    Click here to enlarge
    ESS 6XX kit

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    Any vids of a car with this kit? I'd love to hear how it sounds, if it changes the already awesome sound of the s65
    Click here to enlarge
    ESS 6XX kit

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    No vids other than the dyno cell. If I get my way we will have one at VAC for ride alongs Click here to enlarge

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    Promoted to front page:

    It's a pleasure to officially introduce the VAC Motorsport stroker kit for the S65 V8 in the E9X (E90,E92,E93) M3. For those who want big naturally aspirated horsepower with the M3 this is the way to go. How much power is possible? Well, a race build with 13.5:1 compression pistons as shown in one of the dyno graphs below indicates 600+ naturally aspirated horses is possible. That is with 100 octane and a Pectel ECU to control the motor on 100 octane with 4.4 liter displacement. Now imagine that motor with some Schrick cams in the mix.

    VAC has several options and combinations available. Want to keep the stock compression ratio at 12.0:1 for a street car? No problem. Want low compression pistons for a forced induction application? You got it. Want a 3.5 liter crank to drop the stroke to rev the motor to the moon for hill climb applications? Yep, they can help you there too.

    CP or Mahle piston options are available. VAC can also supply Schrick cams as the first graph below shows a 12.5:1 4.4 liter S65 motor with 284/292 cams putting out over 500 horsepower from 7000 rpm to redline. Also talk about an impressive torque curve being held through the rev range with the cams and stroker crank. That's how it's done folks.

    Graphs, details, pricing, etc., below.

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    I would kill for some dynojet numbers.

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    Click here to enlarge Originally Posted by bobS Click here to enlarge
    Wow, awesome results! This is how the m3 with the s65, should have come from the factory!
    They left themselves room for a "special" edition so to speak. Notice how the Z4 now uses a 4.4 liter motor in racing.

    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale
    : http://www.boostaddict.com/showthrea...r-kit-for-sale

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    Wow this takes the stoker kit game to a new level

  17. #17
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    Click here to enlarge Originally Posted by G0TB00ST? Click here to enlarge
    Wow this takes the stoker kit game to a new level
    Pretty sick stuff. Stroker + cams + high compression pistons = Click here to enlarge

    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale
    : http://www.boostaddict.com/showthrea...r-kit-for-sale

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    Sounds like a hell of a combination. I think I would take the N/A stroker with cams and 12.5:1 over one of the supercharger kits.

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    Click here to enlarge Originally Posted by bobS Click here to enlarge
    Wow, awesome results! This is how the m3 with the s65, should have come from the factory!
    agree 100%

  20. #20
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    Click here to enlarge Originally Posted by ajm8127 Click here to enlarge
    Sounds like a hell of a combination. I think I would take the N/A stroker with cams and 12.5:1 over one of the supercharger kits.
    For just driving pleasure absolutely. But them some N54 owner will say "oh upgraded turbos make more power" and you'll want to bang your head into a wall.

    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale
    : http://www.boostaddict.com/showthrea...r-kit-for-sale

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    just like to say this is HILARIOUS

    dinan's 4.6 makes all of 375whp.. and.. RDsport's isn't much better

  22. #22
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    Click here to enlarge Originally Posted by Flinchy Click here to enlarge
    just like to say this is HILARIOUS

    dinan's 4.6 makes all of 375whp.. and.. RDsport's isn't much better
    Dinan just has a weak tune and the RDSport stroker has hit 441 whp on stock cams...

    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale
    : http://www.boostaddict.com/showthrea...r-kit-for-sale

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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    Dinan just has a weak tune and the RDSport stroker has hit 441 whp on stock cams...
    ah 441 isn't so bad

    i'm just referring to the latest comparison i've seen floating around, where neither stroker kit was particularly impressie
    boop

  24. #24
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    Click here to enlarge Originally Posted by Flinchy Click here to enlarge
    ah 441 isn't so bad

    i'm just referring to the latest comparison i've seen floating around, where neither stroker kit was particularly impressie
    The hardware is good Dinan and RDsport both suck at tuning. Well, Dinan has the resources to have the best but their street tunes are weak.

    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale
    : http://www.boostaddict.com/showthrea...r-kit-for-sale

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    Click here to enlarge

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