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01-04-2011, 10:03 PM
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#26 |
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Registered User
 Join Date: Nov 2009
Location: San Antonio TX
Posts: 251
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Re: 250 to 350 conversion
ok, so I removed te overs and took pics. Did not find any casting numbers but did find the following. First two pics show the "saw tooth" and "hump" shapes which are used to identify if you have 906 or 062. As you can see, each head has both marks go figure.
the last pics show the stamps on the head which dont look like a GM stamp. Does anyone know what they mean? |
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01-05-2011, 02:42 AM
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#27 |
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"the other guy"
Join Date: Oct 2008
Location: Olivehurst California 95961
Posts: 901
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Re: 250 to 350 conversion
strange.... gotta be aftermarket? mine are cast with the complete number, ending in "062". please keep us informed if you figure it out?
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God Said,"Building A 10 Second Import Is Like Coming Out Of The Closet, In The End Ur Still....."EXPLETIVE" 
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01-05-2011, 03:16 AM
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#28 |
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Registered User
Join Date: Oct 2007
Location: Spanaway
Posts: 8,451
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Re: 250 to 350 conversion
__________________
Mike. Swamp Rat build thread : http://67-72chevytrucks.com/vboard/s...d.php?t=595019 72 3/4T 4X4 4" BDS Lift 33" BFG's |
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01-05-2011, 02:13 PM
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#29 |
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Registered User
Join Date: Nov 2009
Location: San Antonio TX
Posts: 251
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Re: 250 to 350 conversion
Swamp rat, thank you for your lead I called the company and explained the pics I posted and he confirmed they are vortech EQ heads. The T rerpesents the manufacturing company in Australia and the 906 is what design they copy. If anyone knows any history of Engine Quest, please share. reputation quality etc. Overall I got a good deal on the heads but would like to know
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01-05-2011, 02:30 PM
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#30 |
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"the other guy"
Join Date: Oct 2008
Location: Olivehurst California 95961
Posts: 901
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Re: 250 to 350 conversion
did they say if they copied the hardened exhaust seat that "906" heads Carrie?
__________________
God Said,"Building A 10 Second Import Is Like Coming Out Of The Closet, In The End Ur Still....."EXPLETIVE"
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01-05-2011, 05:57 PM
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#31 |
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Registered User
Join Date: Oct 2007
Location: Spanaway
Posts: 8,451
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Re: 250 to 350 conversion
Everything i was able to read while searching said they build heads for circle track racing and that the vortec's actually flow better than GM vortec's, but i don't know if they were testing the same exact heads as what you have.
I wouldn't be too concerned with the heads, with a racing background i would think there pretty good quality. Hotrodder mag did some street engine builds with them as well per what i read. Just google the heads and start reading.
__________________
Mike. Swamp Rat build thread : http://67-72chevytrucks.com/vboard/s...d.php?t=595019 72 3/4T 4X4 4" BDS Lift 33" BFG's |
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01-20-2011, 10:54 AM
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#32 |
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Registered User
Join Date: Nov 2009
Location: San Antonio TX
Posts: 251
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Re: 250 to 350 conversion Update
I finally completed the 700r4 and connected to the engine. Installed TV correction kit, transgo shift kit, seals, boost valve and valve body gaskets and filter. Got a chance last night to install in the truck. Unfortunately, the shorty headers are directly above the crossmember which will not allow me to install the exhaust
 . Being that I purchased months ago on ebay, I will need to purchase another set of headers. Which headers are designed for our trucks? Here a pic of current progress.
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01-20-2011, 12:41 PM
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#33 |
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Registered User
Join Date: Oct 2007
Location: Spanaway
Posts: 8,451
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Re: 250 to 350 conversion Update
I think i would search "Headder clearance" here on the forum, I have seen a number of threads where headder clearance was the issue.
__________________
Mike. Swamp Rat build thread : http://67-72chevytrucks.com/vboard/s...d.php?t=595019 72 3/4T 4X4 4" BDS Lift 33" BFG's |
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01-20-2011, 12:51 PM
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#34 |
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Project Junkie! Fishing Poor!!
 
Join Date: Dec 1999
Location: Olympia,Wa. 98512
Posts: 10,770
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Re: 250 to 350 conversion
Did you remove the crossmember that the old bell housing was mounted to? That needs to go and an automatic trans crossmember needs to be installed to support the transmission. I couldn't tell in your post if the bellhousing crossmember was the issue. WES
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On-line catolog Classic Heartbeat Pickup Parts WEHEPP@comcast.net Call us Toll Free (888) 338-2502 Like Us on Facebook No appointment necessary. 72 BB Chevy Custom Deluxe / Custom Camper 67 I-6 (Soon to be 5.7 LS1) Panel 68 BB Chevy Short Bed 72 6.0 LQ9 Short Bed Chevy 4X4 Olympia's fastest growing truck parts supplier. Olympia's home for Wayward Chevys |
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01-20-2011, 06:34 PM
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#35 |
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Registered User
Join Date: Nov 2009
Location: San Antonio TX
Posts: 251
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Re: 250 to 350 conversion
The bell housing crossmember was removed. The headers in the pics are shorty headers that are directly above the front end member. I searched the site and think that the headers for Chevelle will work. Found some 304T, 1/16 thick, 3/8 flange, 1 5/8 primary with 2.5 collectors for $150.00
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