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05-01-2019, 12:30 PM
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#1 |
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Registered User
 Join Date: Jul 2015
Location: 2nd left past the stump on a dirt road.
Posts: 2,629
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Vortec Marine vs. Vortec
So have a question surrounding these new aftermarket products. An Ebay seller lists the Marine variety as being a thicker casting.
I was wondering if anyone knew of any other differences that would make this a better or worse choice for a build? |
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05-01-2019, 12:44 PM
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#2 |
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Registered User
Join Date: Jan 2003
Location: Safford,AZ
Posts: 3,613
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Re: Vortec Marine vs. Vortec
Heads or block?
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05-01-2019, 04:45 PM
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#3 |
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driving is in my blood
Join Date: Dec 1999
Location: Mesa AZ
Posts: 5,692
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Re: Vortec Marine vs. Vortec
If its aftermarket its not really vortec then.
__________________
-78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle. -98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes. -02 Suburban 4x4: leveled front -CBR600F4i, CBR600RR, CBR1000RR, and standup skis DISCLAIMER: I cant spell for the life of me. |
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05-01-2019, 11:20 PM
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#4 |
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60-66 Nut
 Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,246
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Re: Vortec Marine vs. Vortec
EQ does or at least did make a heavier casting Vortec head.
__________________
Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE |
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05-01-2019, 11:43 PM
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#5 | |
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Registered User
Join Date: Dec 2011
Location: Yuma Arizona
Posts: 1,524
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Re: Vortec Marine vs. Vortec
Quote:
Last edited by SunSoaked; 05-02-2019 at 10:12 AM. |
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05-02-2019, 09:20 PM
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#6 |
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Account Suspended
Join Date: Jun 2015
Location: No longer here
Posts: 1,000
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Re: Vortec Marine vs. Vortec
This is like grading 3rd graders math tests..... did you do a spelling and a grammar check as well …..hehheheee.
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05-02-2019, 09:34 PM
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#7 |
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Senior Member
Join Date: Jan 2001
Location: Orem, Utah
Posts: 7,798
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Re: Vortec Marine vs. Vortec
I have aftermarket Vortec heads. The original castings were cracked, so my machine shop guy (someone I really trust) recommended some castings he ordered from his catalog. I don't know the name, but they're identical to factory Vortecs except for being thicker in critical areas.
__________________
I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson |
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05-02-2019, 11:18 PM
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#8 |
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Registered User
Join Date: Jan 2003
Location: Safford,AZ
Posts: 3,613
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Re: Vortec Marine vs. Vortec
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05-07-2019, 12:26 AM
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#9 |
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Registered User
Join Date: Jul 2015
Location: 2nd left past the stump on a dirt road.
Posts: 2,629
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Re: Vortec Marine vs. Vortec
Good info there guys! Thanks for the responses. I guess I should have been more specific. I cannot find it on GMPP website so here I go with something someone got me thinking about.
Some other website one had commented about GM's products actually makes a Marine Vortec Head that was supposed to be the thicker castings. I guess I will be looking at other manufactures as well. |
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05-07-2019, 11:04 PM
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#10 |
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60-66 Nut
Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,246
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Re: Vortec Marine vs. Vortec
GM does make 2 variations of the Vortec head known as the Bowtie Vortec heads that are a thicker casting. Then of course there is the fastburn heads as well.
__________________
Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE |
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05-10-2019, 12:48 AM
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#11 |
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Registered User
Join Date: Jul 2015
Location: 2nd left past the stump on a dirt road.
Posts: 2,629
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Re: Vortec Marine vs. Vortec
Good to know Captain! I was thinking about those a month or so ago, budgets prevailed in the build plan. Still undecided.
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05-10-2019, 01:18 PM
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#12 | |
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driving is in my blood
Join Date: Dec 1999
Location: Mesa AZ
Posts: 5,692
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Re: Vortec Marine vs. Vortec
Quote:
Vortec is trademark product. Sure, there are aftermarket versions of it, but they aren't really vortecs as only the originals can be. Besides the ones you posted flow 7cfm less intake, have 3cc bigger combustion chambers, and use screw in studs. Try again.
__________________
-78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle. -98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes. -02 Suburban 4x4: leveled front -CBR600F4i, CBR600RR, CBR1000RR, and standup skis DISCLAIMER: I cant spell for the life of me. |
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05-16-2019, 12:39 AM
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#13 |
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Registered User
Join Date: Mar 2017
Location: Post Falls, ID
Posts: 52
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Re: Vortec Marine vs. Vortec
I don't know about aftermarket, but factory marine vortec heads had stronger valve springs to prevent valve floating at high rpm. This was done in case some one engaged the throttle without putting the outdrive down into the water.
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