world 305 Torquer heads
Joined: Mar 2000
Posts: 43,187
Likes: 43
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Popular Hot Rod did a dyno comparison of those heads on a fresh .030"-over 305 TPI to stock heads that had a 3-angle valve job done on them. They pocket-ported the Worlds before bolting them on. With a mild Compucam (both tests), they picked up 50 HP with the Worlds.
As to whether they should be ported, two points:
1) Every magazine evaluation I've seen of these heads had them pocket ported - they didn't even bother comparing unported and ported.
2) Before I put in my order, I emailed World with my intended combo and asked them what they recommended, stating I intended to follow the Standard Abrasives do-it-yourself guidelines (www.sa-motorsports.com ). Their response was "Concentrate on the bowl area." I did the full SA job anyway.
They are quality parts otherwise. Should be able to give butt-dyno results after the weekend to answer the "are they any good" part.
------------------
82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4 (restalled TC). Ported World 305 heads, Crane PowerMax cam. ZZ4 intake, oil pump, pan & baffle. Accel HEI SuperCoil & module. Hooker 2055 headers, 3" Catco cat & 3" catback w/dual-opposite Flowmaster. 2.93 limited slip, Spohn SFCs. AMSOIL syn lubes bumper-to-bumper. Daily year-round driver. Best ET, speed TBD...
57 Bel Air, my 1st car. '66 396, 9.7:1 forged TRWs, Weiand Action+, Holley 750VS w/4150 conversion, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlocks, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, MegaShifter, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Idles smooth @ 700 RPM in D. Best 15.02/95.06 @ 5800' Bandimere (corrected 13.93/102.4 @ sea level).
As to whether they should be ported, two points:
1) Every magazine evaluation I've seen of these heads had them pocket ported - they didn't even bother comparing unported and ported.
2) Before I put in my order, I emailed World with my intended combo and asked them what they recommended, stating I intended to follow the Standard Abrasives do-it-yourself guidelines (www.sa-motorsports.com ). Their response was "Concentrate on the bowl area." I did the full SA job anyway.
They are quality parts otherwise. Should be able to give butt-dyno results after the weekend to answer the "are they any good" part.
------------------
82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4 (restalled TC). Ported World 305 heads, Crane PowerMax cam. ZZ4 intake, oil pump, pan & baffle. Accel HEI SuperCoil & module. Hooker 2055 headers, 3" Catco cat & 3" catback w/dual-opposite Flowmaster. 2.93 limited slip, Spohn SFCs. AMSOIL syn lubes bumper-to-bumper. Daily year-round driver. Best ET, speed TBD...
57 Bel Air, my 1st car. '66 396, 9.7:1 forged TRWs, Weiand Action+, Holley 750VS w/4150 conversion, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlocks, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, MegaShifter, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Idles smooth @ 700 RPM in D. Best 15.02/95.06 @ 5800' Bandimere (corrected 13.93/102.4 @ sea level).
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