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May 16, 2026 | 11:11 AM

#16

90project5.0

Fleet Mechanic

Joined: Oct 2025

Posts: 1,892

Likes: 415

31-255-5 comp cams, this is the flat tappet cam I run. I know plenty will argue, but it’s been a good cam.

I run it with 1.72 roller rockers.

About a Y pipe, if you plan on bigger build, you can run duals.

Last edited by 90project5.0; May 16, 2026 at 11:30 AM.

May 16, 2026 | 11:50 AM

#17

Hit Man X

Lead Driver

Joined: Sep 2002

Posts: 9,572

Likes: 2,037

From: North Texas

1990 block should be roller ready if 302, the roller 351W camshaft is okay and way better than the stock flat tappet garbage.

I love the H.O. cam for budget performance build with E7s or GT40 irons.

Doing this labor over again is silly, I would skip the camshaft and freshen up my heads first is budget low. Hell, could find some early GT40 irons and rock out with the O.E. 351W roller cam and I bet would drive nice!

Options!

May 16, 2026 | 12:01 PM

#18

Thedonz4x4

Thread Starter

5th Wheeling

Joined: Mar 2021

Posts: 47

Likes: 1

Thanks, really appreciate the help and suggestions!

May 19, 2026 | 08:57 PM

#19

Thedonz4x4

Thread Starter

5th Wheeling

Joined: Mar 2021

Posts: 47

Likes: 1

Hit Man,

If I go with the 351 cam or HO cam and the E7s or GT40 heads, do I need to deal with the computer?

May 20, 2026 | 05:33 AM

#20

90project5.0

Fleet Mechanic

Joined: Oct 2025

Posts: 1,892

Likes: 415

Quote:

Originally Posted by Thedonz4x4

Hit Man,

If I go with the 351 cam or HO cam and the E7s or GT40 heads, do I need to deal with the computer?

you can do both upgrades and still not have to deal with the computer. Just make sure you follow the firing order of the cam you install.

May 20, 2026 | 07:46 AM

#21

Hit Man X

Lead Driver

Joined: Sep 2002

Posts: 9,572

Likes: 2,037

From: North Texas

Note, both of those cams are very mild so they should have plenty of overlap to idle clean...and did when new.

GT40 irons are very mild, yet both aforementioned items will change the V.E. of the engine. Just how it is with mods that allow it to breathe differently

May 21, 2026 | 11:53 AM

#22

Junktownbill99

Fleet Mechanic

Joined: Nov 2022

Posts: 1,697

Likes: 416

Quote:

Originally Posted by Hit Man X

Juat heads up, Fox 5.0 shorty headers fit these frames easily but will not connect to the O.E. Y pipe...yet they are pretty simple to find cheap, especially the BBK unequal length ones. A 2.25" Y pipe with a single 3" would be fine for the truck.

I actually tried this, the issue I ran into was the driver side collector, as it would spit right out onto the front driveshaft. I couldn't think of a way to make that work, or at least work better than stock.

To be fair, I am by no means a master fabricator, I just started dorking around with a mig welder.

Ended up selling them (for a profit)