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-   -   Vortec Heads Flowed with 2.02/1.60 Valves (https://www.thirdgen.org/forums/tech-general-engine/699910-vortec-heads-flowed-2-a.html)

VincentZ28 04-08-2014 08:34 PM
Vortec Heads Flowed with 2.02/1.60 Valves
 
5 Attachment(s)
Here are the results.
Attachment 337319
Attachment 337320
Attachment 337321
Attachment 337322
Attachment 337323
What you guys think?

midias 04-09-2014 08:05 AM
Re: Vortec Heads Flowed with 2.02/1.60 Valves
 
Great numbers and on a 170cc intake. I am not sure what you have into them price wise but posts like this should make anyone even considering junk like procomp run for the hills. The best increase is on the exhaust side. usually the vortecs are weak on exhaust flow but it looks like that has been fixed.

Fast355 04-09-2014 08:26 AM
Re: Vortec Heads Flowed with 2.02/1.60 Valves
 
Originally Posted by midias (Post 5745232)
Great numbers and on a 170cc intake. I am not sure what you have into them price wise but posts like this should make anyone even considering junk like procomp run for the hills. The best increase is on the exhaust side. usually the vortecs are weak on exhaust flow but it looks like that has been fixed.
You should see what a small amount of chamber work, cnc exhaust work and 2.05/1.60s make 906s flow like! My intake flow was 265 @ .500 and exhaust was 220 @ .500! Made over 300 RWHP with TBI on a dual plane performer intake and a production GM LT4 cam with 1.6:1 rockers. Upped the cam slightly to a Reed Roller in the mid 21x @ .050 and went with a 2bbl victor jr single plane and increased power to 365 RWHP on a 8.9:1 (18cc dished pistons) 350 that was turning an unlocked 700r4, heavy 2 piece steel driveshaft with carrier bearing and GM 9.5" corporate 14-bolt.

VincentZ28 04-09-2014 04:24 PM
Re: Vortec Heads Flowed with 2.02/1.60 Valves
 
A ZZ9 cam will be used with Siamesed Edelbrock runners, Dyno Don Headers, ported Vortec base, 24lbs injectors, 52mm TB, 700r4 and 3.23 gears in a 91 Z28. Chip will be tune by Kevin91z at the Dyno.

Fast355 04-09-2014 04:35 PM
Re: Vortec Heads Flowed with 2.02/1.60 Valves
 
Originally Posted by VincentZ28 (Post 5745469)
A ZZ9 cam will be used with Siamesed Edelbrock runners, Dyno Don Headers, ported Vortec base, 24lbs injectors, 52mm TB, 700r4 and 3.23 gears in a 91 Z28. Chip will be tune by Kevin91z at the Dyno.
Sounds like it will be a strong runner.....Looking forward to dyno charts when it gets dialed in. Sounds like it should be in the 350 RWHP range if not a little more.

VincentZ28 04-09-2014 04:50 PM
Re: Vortec Heads Flowed with 2.02/1.60 Valves
 
Originally Posted by Fast355 (Post 5745473)
Sounds like it will be a strong runner.....Looking forward to dyno charts when it gets dialed in. Sounds like it should be in the 350 RWHP range if not a little more.
I hope so!
Oh yea! It also has dual cats and a 3in Magnaflow cat-back exhaust system. The A/C and all the smog stuff will be on and working.

MoJoe 04-09-2014 05:19 PM
Re: Vortec Heads Flowed with 2.02/1.60 Valves
 
@ Vincent - What did the porting cost? Who did it? And is it available to anyone?

Dyno Don 04-09-2014 06:19 PM
Re: Vortec Heads Flowed with 2.02/1.60 Valves
 
I did the porting to the intake and exhaust, Dr. J did the valves and bowl work.


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