Dyno Results
PowerPort 320
Test Engine : 12.5:1 compression 490 c . i . d . with Trick Flow PowerPort ® 320 cylinder heads ( TFS-4141T803 ), COMP Cams custom solid roller camshaft ( 280 °/ 288 ° duration @. 050 "; . 748 "/. 714 " lift ; 114 ° lobe separation ), Trick Flow 1.7 ratio roller rocker arms ( TFS-41400621 ), Hooker Super Competition headers with 2 " primaries , open exhaust .
Your Formula for Big Block Chevy Performance !
New heads are just one part of the horsepower formula . To make it complete , you ’ re going to need some other components .
Track Max ® Camshafts
Get even more power with a Track Max camshaft . With high performance hydraulic roller and full race mechanical roller grinds to choose from , these cams will provide the good midrange and strong top-end power that you are looking for from your big cubic inch performance engine .
Roller Rocker Arms
These excellent aluminum roller rockers feature heat-treated CNC-machined bodies , premium needle-bearing fulcrums , roller tips , and a machined relief for valve spring clearance . They slide onto all 7 / 16 " rocker studs and have a 1.7 ratio to increase valve lift . Sold in sets of 16 with polylocks .
Rocker Stud Girdles
These CNC-machined stud girdles help control valve lift and timing changes due to stud flex , allowing more consistent high-RPM performance . Each stud girdle is anodized blue and comes with high-quality mounting hardware and hardened adjusting nuts . Tall-style valve covers required — look for them on TrickFlow . com !
A Legend in Their Own Time .
What does it take to become a legend ? For PowerPort ® 320 cylinder heads , it means infusing Chevy big blocks with enough power to pull up stumps , shred tires , and turn ring gears into scrap iron .
Making that happen starts with large 320cc rectangular-shaped Fast As Cast ® intake ports . It continues with 122cc heart-shaped chambers , 24 ° intake valve angles with 4 ° side cants , and . 300 " raised exhaust ports for mondo airfl ow volume . To seal the deal , Trick Flow uses high-quality valvetrain components to guarantee competition level durability .
Dyno results don ’ t lie . An off-the-shelf set of PowerPort 320s pushed our 490 c . i . d . test mule to 730 HP on pump gas . Imagine what they can do on your mill !
Airflow Results PowerPort 320
Lift Value Intake Flow CFM Exhaust Flow CFM . 100 " 75 64 . 200 " 155 125 . 300 " 230 166 . 400 " 282 202 . 500 " 320 241 . 600 " 348 270 . 700 " 360 290 . 800 " 362 301
Tests conducted at 28 " of water ( pressure ). Bore size : 4.500 " 2.250 " intake with CNC-bowl blend and CNC-inlet with MRG-121 gasket ; exhaust with 2 " pipe .
Trick Flow pays contingency in the NHRA on all Trick Flow cylinder heads , and in the NMCA and NMRA on all Trick Flow cylinder heads and intake manifolds .
2405DUTF
TrickFlow . com • 1-330-630-1555
Some parts are not legal for use in California or other states with similar laws / regulations . Please check your state and / or local laws / regulations .