Competition Head Porting
For all-out street/strip or Strip only vehicles, we offer a higher level of porting services. These services include the valve job, full port/bowl work, and combustion chamber de-shrouding, blending, and polishing.
Prices/flow rates depend on what heads we are using, but here are a few examples, of two of the most popular heads.
A word on iron heads....
As of January 2003, TA Performance is now offering the Stage 1 Head in aluminum, with revised intake and exhaust ports, that is a direct bolt on replacement of the iron heads. Unless you have rebuilt Stage 1 heads that just need port work, or are bound to Iron heads by preference or class rules, we strongly advise you to not rebuild/stage 1 convert/competition port iron heads. It's no longer cost effective.
These heads were built from scratch here, before the Aluminum versions were available, and the complete cost on these Heads was $2350.00, which included all the rebuilding work, parts, and porting work. That will be very close to the finished cost of the Aluminum head, and out of the box, they will outflow any iron Stage 1 head, regardless of porting.
For more info on the Aluminum heads, vs. ported iron heads, click here
Full competition port work, 1970 '786 heads, with STG 1 valves.
Porting/chamber work/valve job Price - $1095.00
| Valve lift in inches | Stock intake | Ported Intake | Stock Exhaust | Ported Exhaust |
| .100 | 56 | 74 | 50 | 56 |
| .200 | 116 | 158 | 90 | 119 |
| .300 | 162 | 215 | 115 | 152 |
| .400 | 198 | 258 | 130 | 182 |
| .500 | 218 | 270 | 139 | 194 |
| .600 | 219 | 273 | 142 | 197 |
| .700 | 217 | 274 | 143 | 197 |
| Averages (.200-.500) | 174 | 225 | 119 | 162 |
These are the heads on the latest iron-headed Level 2 street motor, click here for dyno results for that combination.
Stage 2 TE Aluminum Heads
For Full out competition applications, these are the heads to use. Listed here are the Specifications and complete pricing for a finished, ready to bolt on set of these heads, and their finished flow rates, as well as porting only prices.
Parts/specs
TA performance Track Eliminator Stage 2 Head castings
This head is a STG 2 head, with the Stage 3 raised intake port, but standard valve centerlines, requiring the SP-2A Intake manifold. Pricing reflects the costs of the castings/parts/porting with cryogenically frozen roller cam valve springs. The cryogenic process to this spring, in this application, doubles the life of the valve springs, and is highly recommended.
TA 2.250 Intake valves, turned down to a proprietary size.
TA 1.755 Exhaust Valves
TA 1190 springs, 1451 Retainers, 1434 Locks, and shims/seals
Flow sheet Results
| Valve lift in inches | Un-ported | Ported Intake | Un-ported Exhaust | Ported Exhaust |
| .100 | 77 | 79 | 61 | 64 |
| .200 | 151 | 170 | 117 | 127 |
| .300 | 206 | 242 | 155 | 186 |
| .400 | 256 | 298 | 203 | 229 |
| .500 | 295 | 338 | 227 | 258 |
| .600 | 295 | 345 | 239 | 274 |
| .700 | 288 | 351 | 247 | 283 |
| Averages (.200-.500) | 227 cfm | 262 cfm | 176 cfm | 200 cfm |
Previous to this set being finished, 225 cfm at .300 valve lift on the intake was considered "killer". We did extensive development work on these, with valve sizing, chamber work, porting techniques, to raise the low valve lift numbers dramatically, as we feel that the total head flow numbers, across the valve lift range, is much more important than just the .500-.700 lift numbers.
When I reported these numbers to "those in the know" the response was "Wow.. is that .300 number for real?" They are that good, and the result of a "money is no object" development program.
Pricing
| Complete ready to bolt on, castings and all parts included | $3995.00 |
| You supply the castings and parts, we freeze the springs, install the valves, and perform our proprietary valve sizing, porting, and chamber work, and assemble | $2350.00 |
Results on these heads, on a 494 roller- cam race motor, soon.