slowhawk performance

slowhawk performance


Huge thank you to Don and the guys at slowhawk good work awesome tuning and fastest turn around time you'll see in just about any performance shop!
I can't thank Don and his team enough.
They did a top notch job installing the supercharger on my C5.
New levels of sponsorship for all the amazing companies that have supported us!!! This is the list from last year and I know there are more people reaching out already. We hope you will all participate this year because without the sponsors the event would not have been as big of a hit. We are looking at payout with full 32 car fields in big and small tire in the area of $8,000 in each and around $3000 for 6.50 index. Message Me Scott MacDonald or Ralph with any questions. Let us help spread the work...

Sigadel Pro Tools inc
slowhawk performance
County Electric (Mike Cortina)
Aandjporfilio Landscape Contractors
Accurate Transmission llc and freshen up if winner is running Accurate trans
Fragola Performance Systemss 2 sets of AN Wrenches
Robert Scaminacii Just Stump
@GForce Will Anjone
Carlquist Competition Enginess
G&H Paving, LLC
Big Als Toy Box
@steve woolley Milling and Paving
Mohawk Properties Inc. and S&K sealcoat plus
W&J Logistics Services
Kevin Silva Southcoast Overhead door and services
MPH Fabrications LLC
Scottiewheels Racing
Str8Line Performance & Automotive
Moroso Performance Products, Inc.
John Csordas Jr. The Auto Center
Dont forget about this one Don, Back in 2003 you had her tuned perfectly

[email protected] (NA)
1.41 60 FT

Merry Xmas
Your Official Lock In Links for New England No Time - The IceBreaker Seal Your Own Fate presented by Gary Rice Equipment & Service, LLC.

Please make sure you select the appropriate link for the correct shootout you are looking to lock in for. DO NOT message us directly after locking in. We will post a final lock in list in a few weeks. All spots are limited to 32 cars each! In the result that you lock in after we are full and before we remove the link, you will be a prioritized alternate if somebody drops. Only alternates will receive a refund!

slowhawk performance EZ Street:

Superior Overhead Door Inc. Extreme Street:

Accurate Transmission llc 235/26:

Westgate Performance 275/28:

Final Inspection Auto Detailing Big Tire:
Glad your business is taking off you deserve it.
Don did a great job sorting out a few issues on my corvette. Very timely communication and flexibility. Already looking forward to bringing car back for more power! Maybe he can help my daily Prius too...
They have awesome cars that are for great deals. They do a very nice job on their vehicles
Poor service. Racism is in the air...
The eagle has landed!!...New Vortech Superchargers V15 beast in for final R&D testing. This all billet unit is massive but will bolt right up to all our East Coast Supercharging Novi brackets. Stay tuned for results and pre-orders!! #blownbyecs #poweredbyvortech

Vengeance Racing
Hennessey Performance
Texas Speed and Performance, LTD
TPS Motorsports
Advanced Modern Performance
Cordes Performance Racing & Sales
AGP Speed And Custom
Brian Tooley Racing
Complete Street Performance
Corvette World Dallas
Corvette World Houston
Culver Auto Specialties
DBR High Performance
Edgyvette LLC - Corvette and Camaro Parts, Porting, and Tuning
Fat Body Performance
East Texas Muscle Cars
FJ Performance Inc
Futral Motorsports
G-Force MotorSports
Gwatney Performance Innovation
Heintz Racing
Horsepower Solutions
Jannetty Racing Enterprises Inc.
JTM Motorsports
Kentucky Speed
Lashway Motorsports
Late Model Racecraft
LSX Atlanta
M2K Motorsports
Mas Tuning
New Era Performance
Presence Distribution
Race Ready Garage Inc.
Serious HP
slowhawk performance
Southwest Speed
MS Tuning
Speed Inc.
Supercharger Outlet and Performance LLC
Redline Motorsports
Weapon X Motorsports
Visit our friends at slowhawk performance for all your LS tuning needs!

Lsx engine, drivetrain and tuning work
We can supply all parts for any build from a simple header install to a 1000hp street driver. Call us for your needs

We specialize modifying LS based vehicle's including 97-present Corvette, 98-02,10-present Camaro/Firebird, 04-06 GTO , G8 , 99to present gas/8cyl trucks. Anything from a tune to a full on Forced induction 454ci setup.

Operating as usual


This Saturday the dyno will be open for renting. So anyone looking for some runs or use the dyno for tuning contact the shop to reserve.

Our dyno is full load. Makes it easy for boost tuning.


Ralphs car up and running. Heading to John at A1 to setup front suspension next week. Then if all goes as planned, hitting Scotty Wheels small tire event.


Little idle vid of a build we did this week.
Z06 which got our btr stage 2 cam kit, arh headers, alky control meth and dsx crank pulley.


Had a nice GN on the dyno today pushing some 4 digit numbers.


Thank you to everyone that came by yesterday. Was excellent weather with a bunch of great people.
Please drop any pics or videos from the event in the comments.


Photos from slowhawk performance's post 03/14/2022

The new addition has arrived. Of coarse we had it apart next day for some minor work.
After the 500mile break in imposed by GM we will dyno and make up our minds on what we will test out.


A 2007 TBSS we have been building.
402ci, 4l80, 2wd
Fully gutted , Haltech, interior/lights on panel.
Custom 3” to 4” 304 stainless exhaust.

This should be fun to make some passes in.


Hmm, so our shop will be coming in within a month or 2.
Decisions have to be made.

Procharger kit
Magnacharger/LPE kit ?

First we will go bolt on. Then we will look into aftermarket computer systems.

Photos from slowhawk performance's post 01/10/2022

Start of this weeks projects going on.
67 ls, turbo getting tuned
Ralphs vette getting a few goodies
12 grandsport getting cam, headers
1st gen camaro in for some fixing
06 1500 getting a procharger.

Photos from slowhawk performance's post 12/21/2021

Week before Christmas and we have some longer projects going on.
Black truck RHS motor is back from a refresh. Still 427ci/twin turbo but this year switching to a Haltech controlling it.
White CTS-V in for a pulley, tune. Already had headers, cold air ect.
Ralphs car in for the winter changes, tubular subframe setup to drop 50-60lbs. Redoing the blower setup, bye bye belt problems.


Haven’t posted in a bit, we’ve been busy at the shop.
Here is a long time customers car, Bob , which is the 4th or 5th vehicle we have modded for him
This is a 17 1le which we added a Procharger D1, american racing headers and Alky control meth system. A good way to add 200rwhp and retain stock drivability.

Timeline photos 11/10/2021

Procharger kits finally released.

🏁 Watch Now! C8 Supercharger is Now Shipping from ProCharger! -


Doing some testing of some bolt on parts today/tomorrow on Joe’s C8.


Great day today. Thanks to everyone that came by.

Feel free to drop any pics from today. I was kinda busy to take any.

Photos from slowhawk performance's post 09/17/2021

Getting the shop cleaned up for the open house tomorrow. Weather looks good.


2 haltech swapped vehicles hitting the dyno on this rainy day.


A longtime customer came in for some maintenance and fuel system/up the boost.
This 124k mile car has been cam/boosted for some time now. Has many highway pulls,road race tracks and drag racing.
So why not push it a little more. Kicked it up to 10psi and now makes a little over 700rwhp through the 6l80.


A walk through of the shop this Friday on what we have going on.

Photos from slowhawk performance's post 08/19/2021

Did another supercharger/header/meth install on this a8 2015 vette. Love these setups.
A&A supercharger
ARH longtube
Alky control single meth nozzle setup.
Shows a stock setup compared to the mods. Big gains across the curve.


Little vid of a road race c6 we work on. Did a 416ci on it last year. This year we changed over the heads, cam, intake. Doing some runs to 7000rpm.
All set to hit the coarse again.


We are a Haltech dealer. Got a few kits to put in. This is the same system we run in Ralphs C6 which has plenty of control, dual wideband safety system. Full automatic logging.


C5 kind of day.
All supercharged.
1 Maggie
1 getting an A&A kit
1 getting a 416ci.


Spent some time at the track today working on our 60’. Got it decent on a not so great prep today.
Few more changes should get us exactly where we want to be.


2008 Silverado we built a 408ci/80mm turbo setup for. Doing some 800rwhp break in dyno hits on it.


The video of a 4 digit pull.

Photos from slowhawk performance's post 07/12/2021

Street car making some 4 digit numbers today on 93octane and meth.
This is a Haywood/Merrit build. I was just the dyno guy for this session.


Hope everyone has a great 4th of July weekend.
We will be closed till July 12th.

Mobile uploads 06/04/2021

No time coming up soon.

Photos from slowhawk performance's post 05/25/2021

Some pics of the cars at the shop this week.
Some maintenance jobs, cam jobs ect going on.

Photos from slowhawk performance's post 05/14/2021

Little ls9 swap tuning today.

Photos from slowhawk performance's post 04/02/2021

2016 corvette we installed an A&A supercharger kit on this week. Love the fit/finish on these setups.
Like most of our installs. We have the car for 1 week so the customer loses minimal time with there car.


One of our older builds back. Was a street car for many years. Now turned back up to hit the track. New owner looking to shed some weight and get it into the 8’s.


2006 TBSS in for some tuning from our friends at 508 Custom.
Truck has a 402ci we built, 508 installed with a F1 blower, 4l80 and a bunch of custom work.
Now we are spending time SD tuning the E-40 computer to get the most out of this.


Got the Holley hi ram to fit on Justin’s 418/ procharged c7. Came out better than I expected for fitment.


The cars waiting to go faster.

Videos (show all)



30 1st St
Bridgewater, MA

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm
Saturday 9am - 3pm

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