Speier Racing Heads

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Speier Racing Heads VFactor 23º SBC heads and home of the 900hp low port 23º SBC. Super Stock 23º heads, NZ Jet Sprint 23º heads, Your induction experts! VELOCITY is KEY!

We design master ports for engine shops, BBC, SBF, SBC, BBM, SBM, LS. Customer list with PROVEN results!

Tune in tonight! Tim had a killer presentation on the history of the BBC. It will be a good night!
10/17/2026

Tune in tonight! Tim had a killer presentation on the history of the BBC. It will be a good night!

🔥 BIG BLOCK CHEVY CYLINDER HEADS 🏁 LIVE CHAT | DragBoss Garage, Dar...

First time on the bench. I have NO DOUBT this would flow 370cfm if I wanted it to!! Stupid small throat still, not rolle...
10/17/2026

First time on the bench. I have NO DOUBT this would flow 370cfm if I wanted it to!! Stupid small throat still, not rolled, it's a great head.

4.125 fixture
231cc
50º 2.125 Manley Performance Products, Inc. Titanium
1.880 throat!!!!!!!
88.5% of the valve.

Late night activities. Cut registers for larger seat rings. Going to angle mill 5.750 of the deck and roll the head, cor...
10/17/2026

Late night activities. Cut registers for larger seat rings. Going to angle mill 5.750 of the deck and roll the head, correct face. Spot face the bolt holes and holes should be big enough that I don't need to correct them.

1º cut at 5.75 deck = .106 angle mill

10/17/2026

Figured out the plan on the Ford heads. I'm going to angle mill them 1º since I need custom pistons. Looking for 2.60-2.65in² at the PR area. 2.125 titanium valve with 91 percent throat.

Need [email protected] and [email protected] through head.
Need [email protected] through manifold and carb.
Goal is 2.0 hp/cid with more welcomed!😉

Here is some math and my plan for the 363 heads.Enough flow and area to make 832hp
10/16/2026

Here is some math and my plan for the 363 heads.

Enough flow and area to make 832hp

10/16/2026
Last nights Shenanigans. Little shape in the 20º Ford..
10/16/2026

Last nights Shenanigans. Little shape in the 20º Ford..

Address

3302 US Highway 183 Alt
Hays, KS
67601

Telephone

+17856230963

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