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Author Topic:   Vortec 062 vs 520
rpm9595
Dirt Roller

Total posts: 11
posted December 16, 2004 09:12 AM  
Does anyone know if the 305,520 vortec heads are as good as the 062 vortec. I need more compression the 305 have 58 cc and I have to use flat tops any ideals. no porting allowed. Please help!

mansfief
Dirt Maniac

Total posts: 128
posted December 16, 2004 12:10 PM  
Check out the new heavy duty Vortec heads, #25534351 and #25534371 (4371 is large port), both 65 cc, .530 lift. www.sdpc.com

rpm9595
Dirt Roller

Total posts: 11
posted December 16, 2004 12:33 PM  
We not allowed to run bow tie parts but i'll do it if somebohy tell me how to change casting numbers and marking.

rico 08
Dirt Forum Champ
Total posts: 1139
posted December 17, 2004 06:24 AM  
go to www.castheads.com

Istock66
unregistered Total posts: 1139
posted December 17, 2004 07:41 AM           send a private message to rico 08   Edit/Delete Message   Reply w/QuoteBBBBBB
305 heads dont flow even the 520 head, according to brezinski.

they flow better than any other oem 305 head but not good enough to run unless your limited to 305 heads only.

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