Services & products
Heads, porting & manifolds
SRH offers hand porting on ANY domestic cylinder head, a full CNC lineup, and dyno and track proven burr-finished manifolds.
CNC cylinder heads
The CNC lineup
A strong database of dyno proven and track results. Heads for NA, nitrous and turbo applications, finished per application. Linked items have full specs and online pricing in the store; others are call-for-info.
Small Block Chevy
- ProFiler v3.25PF/13º
- VFactor v3.25/13º
- ProFiler 300cc Airstrike
- ProFiler 370cc Airstrike
- ProFiler v2.55PF/23º
- VFactor v2.35 205cc
- VFactor v2.50 227cc
- VFactor v2.70 250cc
- VFactor v3.00 265cc
- Import v2.50BI/23º CNC
- GM v2.65GM/18º
- ProFiler v3.60/SPS (Darin Morgan port)
Big Block Chevy
- ProFiler vSOLID/BBC
- ProFiler vSniper/355
- ProFiler vSniper/375
- ProFiler vSniper/XL
- Dart vPRO20/BBC
Ford
- ProFiler 240cc 20º
- Edelbrock 7721
- Brodix/Kuntz 15º
Hand head porting
Results, not a number
“It’s my duty to provide RESULTS rather than a number!” If they don’t perform like we discuss, send them back and I’ll work on them until they do, at no cost to you.
| Service | Price |
|---|---|
| Small block applications | Starting at $2,000 |
| Big block applications | Starting at $2,200 |
| “Econo” porting — valve job, chamber finishing, throat sizing, short side reworked, openings squared | $1,000 |
| Engine builder CNC designs | Call for quote |
Performed on every hand-ported head
- Disassemble and clean
- Fully ported — all chambers, intake and exhaust ports
- SRH custom multi-angle valve job (Exacta DD)
- All seats hand touched with stone
- Valves refaced w/ intake backcut (Sunnen VR7000)
- Surface mill to MLS finish (Winona CBN)
- Flow testing (Saenz D680 w/ Audie)
- All valve springs checked for pressure (Buxton digital)
- Assembled — spring pressures / install height listed on invoice
- Bagged for install
NHRA Super Stock
Properly designed Super Stock heads
Years of 23º R&D and a growing list of customers. From CFD analysis to CNC hand-finished ports. Edelbrock legal SBC — all valve combos, raised exhaust, CNC/hand finished, starting at $5,400.
Super Stock heads
- SBC Edelbrock
- SBC Dart
- BBC Edelbrock
- OEM Iron
- OEM Aluminum
- World Products SBC Iron
- GM “243” LS1
Package work
Welding for valve sizes, new iron seats, epoxy work, full hand-finished CNC, angle milled with face corrected, ports equalized. Legal castings can be supplied. Super Stock manifolds: call for pricing.
Hand burr manifolds
Burr finish. Dyno proven.
We only do burr finish work — we don’t polish it smooth as glass. If you don’t want a burr-finished manifold proven from many dyno sessions, back-to-back runs and track times, please don’t order one from SRH.
| Service | Price |
|---|---|
| Plenum mod labor | $475 |
| Sportsman fully ported w/ burr — small block | $750 |
| Sportsman fully ported w/ burr — big block | $850 |
| Smooth walls / top-shelf looks | add $250 |
| MAX-Effort fully ported (surface finish per application) | Call |
| Fabricated / welding | Call for quote |
Flow testing & evaluation
Free flow & evaluation
“My word to you: I will gladly flow and evaluate your cylinder heads for free! The return shipping, however, must be paid by you. After evaluating your heads I’ll give you my recommendation. If you’d rather have me send them back with no work, that is perfectly OK with me!”
Equipment
Saenz D680 flow bench, PT Black Box II, Audie software, pitot probing, and in-house wet flow.
Philosophy
Port shape, localized velocity, average velocity — then CFM. Bigger isn’t better.
Ready to make more power?
Tell Chad about your combo — heads, manifold, class and RPM goal.