East Texas Muscle Cars

East Texas Muscle Cars We specialize in the sales and installation of quality aftermarket performance products for your early to late model vehicle.

Owner ( Stephen Covington) has over 20 years of auto experience. Also in his Short life already he has been a Aircraft Mechanics and has built over 50 aircraft engines on his own. With that also came flying which he loves to do and has his Pilots lic. So there is a LOT of experience with making sure everything is RIGHT the first time as in a airplane you cannot make mistakes! Here at ETMC we striv

e to make your car out preform the others on the track or road. We hold MANY ls base records and first. From the fastest G8 to the fastest stock bottom end Gto, and countless 8 and 9 sec cars.

05 vette we just did a stg 2 to stg 3 on itThis week. And did some other maintenance at the same timeAuto car with baby ...
04/01/2026

05 vette we just did a stg 2 to stg 3 on it
This week. And did some other maintenance at the same time

Auto car with baby cam

Stg 3 kit we just finished on this 2004 ssr 5.3350 rwhpPicked up 120hp!
01/30/2026

Stg 3 kit we just finished on this 2004 ssr 5.3

350 rwhp
Picked up 120hp!

Stg 6 corvette we are finishing up this week.Currently at 670 rwhp on 7.5 psiLetting her cool off right now
01/06/2026

Stg 6 corvette we are finishing up this week.

Currently at 670 rwhp on 7.5 psi

Letting her cool off right now

Stg3 kit we just finished up on this 07 vette #
11/14/2025

Stg3 kit we just finished up on this 07 vette

#

First tune of the day2014 5.3Stg3 cam
11/14/2025

First tune of the day
2014 5.3
Stg3 cam

06/23/2025

SUMMER SALE TIME!!!!!!!!!!!!!!!!!!!!!

MENTION THIS SALE WHEN YOU EMAIL IN FOR YOUR BUILD OR QUOTE AND GET %10 OFF YOUR INVOICE NOW TILL AUGUST.

TO BE ELIGIBLE THE INVOICE WILL NEED TO HAVE THE DEPOSIT PAID BEFORE THE SALE ENDS. CURRENT WORK LOAD IS 2-4 WEEKS OUT ON MOST BUILDS.

THIS IS ALSO A CASH SALE, IF PAYING CARD THERE IS A CARD FEE SORRY GUYS :-(

THIS SALE IS FOR ALL
STG2-6 KITS ON ALL CARS WE SERVICE

EMAIL US FOR PRICING AND INFO!

[email protected]




Reason I tell customers on the LS 4.8 5.3 6.0 6.2 motors to do headers first before the cam.EDIT. Headers on a LS or tr...
05/29/2025

Reason I tell customers on the LS 4.8 5.3 6.0 6.2 motors to do headers first before the cam.

EDIT. Headers on a LS or truck motor do NOT make 40+ HP alone, they need supporting mods to do what I'm stating below. The purpose of this post is to show all these motors need to breathe and the manifolds are horrible. When you add a camshaft, even a small one, the motor needs to breathe more than the stock manifolds allow. If you dont already have headers, the cam swap will NOT net you the HP and TQ gains they should untill you get the motor to breath. Hence why if you do headers AFTER a camshaft, you see bigger gains than you would if you add them BEFORE a cam swap. All this post is showing is something I've seen 100s of times, almost once a week, actually. People change a cam and dont do supposing mods that it needs. Intake and headers. This is why in our shop we do things in order
1 intake
2 headers
3 cam
Buy doing this the motor can breathe a d the cam will work like it should. Motor is a small cam,headers and cold air. Pulls done in 2nd gear NOT 3rd. He didn't have a good HD driveshaft to run 3rd all the way out. But the old pull that it's compared to is also 2nd gear too. So it's apples to apples.

If you add these things after a cam, you will see bigger gains than you normally would cause of the motor now being able to breathe with the cam in it. It's not rocket science guys. Its simple how a motor works.

This guy had a shop tell him he didn't need headers with his cam, well that's true you dont, but you leave ALOT on the table. Headers normally on a 4.8 or 5.3 pickup 15-25 max.

But as you can see, we did headers and retune and look how much it picked up.
And we did the tune without the headers too, so wasnt the tune that was the issue.

Crazy gains, but seen this way to many times over 25 years

Blue lines are hp and tq before headers, cam only
And red is after adding the headers to it and now the motor can breathe.

Tuning like always 😀
04/26/2025

Tuning like always 😀

Ls3 rebuild going on this week
03/20/2025

Ls3 rebuild going on this week



Just finished up this stripe install on this c6!
02/27/2025

Just finished up this stripe install on this c6!

Stg 3 kit going on this camaro this week!
02/11/2025

Stg 3 kit going on this camaro this week!



Address

5917 McCann Road
Longview, TX
75605

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

Telephone

+19036860456

Website

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