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#101 |
Senior Member
![]() Join Date: Feb 2002
Location: Tucson, AZ USA
Posts: 7,255
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Re: Post Your Straight Six Pics!
Nice "HD-TD". I wonder why I never painted my lifter covers flat black? Looks cool. The chromed Chevy script valve cover is a real keeper. HEI for L6 -- you got it all goin', pal. Keep up the good work.
What carb is that on the Cliffy intake? Almost looks like a Q-Jet.
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Every 25 years I like to rebuild that 292, whether it needs it or not. Last edited by '68OrangeSunshine; 05-02-2009 at 05:10 AM. |
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#102 |
Registered User
Join Date: Mar 2008
Location: Eagle Ne
Posts: 356
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Re: Post Your Straight Six Pics!
Yep its a Q-jet not sure if I'm gonna run it or use an old AFB of an small buick I got
I've actually been thinkin about paintin the side covers a cast aluminum color, (same color as the valve covers on my Cummins)
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60 4x4,235,SM420,Rockwell T221,D44/HO33 sold 4/12 67 C-20,292,SM420,HO72 90 Dodge W250 Cummins,NV4500HD,205,D60/D80 93 Dodge W350 Dually Cummins, Getrag, 205,D60/D70 |
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#103 |
Senior Member
![]() Join Date: Feb 2002
Location: Tucson, AZ USA
Posts: 7,255
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Re: Post Your Straight Six Pics!
I wonder what CFM that Q-jet has? I know GM Brazil has a Quadrajet L6 intake, but they're running almost pure alcohol down there, and you have to burn twice as much to get the same power as gas. If you look at the air/fuel charts a 292 @ WOT ideally needs 400 CFM. 390 is closest, but after 25 years I've had it with my Holley 8007. I now run the Edelbrock 1404, 500 CFM clone of the old Carter AFB. The AFB design with vacuum secondary only draws as much mixture as the engine vacuum demands, so a 500 isn't too big. But it does run rich. It would be interesting to see what you get with the Q-jet.
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Every 25 years I like to rebuild that 292, whether it needs it or not. |
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#104 |
Registered User
Join Date: Mar 2008
Location: Eagle Ne
Posts: 356
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Re: Post Your Straight Six Pics!
I think the Q jet I got is 725 cfm, I"m not sure on the cfm on the afb I got but it came off a I think 215 all aluminum v8 Buick or Olds like what they used in a F85
I've ran both of these carbs on my last 292 and the AFB did seem to run a little better
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60 4x4,235,SM420,Rockwell T221,D44/HO33 sold 4/12 67 C-20,292,SM420,HO72 90 Dodge W250 Cummins,NV4500HD,205,D60/D80 93 Dodge W350 Dually Cummins, Getrag, 205,D60/D70 |
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#105 |
Eat My Rust
Join Date: Jan 2007
Location: Cypress, Texas
Posts: 3,362
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Re: Post Your Straight Six Pics!
I'd imagine that's because the Q-Jet was way over-carbed for that motor. 725 is pretty mad for a little inliner.
From what I've experienced, the two standard carbs I've had on the truck so far were 650s. |
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#106 |
Out of the carpool lane.
Join Date: Jan 2000
Location: Clark Co, WA
Posts: 5,673
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Re: Post Your Straight Six Pics!
Pontiac used a Q-jet on their ohc 250 engine in the 1st gen Firebird. There's at least 2 people now on the board that have used a Q-jet on their 250. I was going to try it on my '67 but never made the time to do it.
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1968 C-10 SWB, 5.7 Vortec/700R4/3.73 posi, Torch Red 1968 Camaro, 250/Powerglide, all original (No, I'm not gonna drop a 350 in it!...Jeez!) 2000 Honda VFR in the faster yellow! 2008 Husqvarna TE-610 1967 C-10 SWB 'Six Appeal'-Gone but not forgotten... |
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#107 |
Damage Inc
Join Date: Dec 2008
Location: Baytown Tx
Posts: 336
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Re: Post Your Straight Six Pics!
my 6
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05 CC- magnacharged,LTs,Gt-2 cam,3.73s,tru-trac,tuned-sold 01 ECSB- caddy-clipped,22/24 intros,cammed,layin-frame 04 RCSB-joe gibbs clone,22in billets 68 stepper build http://67-72chevytrucks.com/vboard/s...d.php?t=332337 |
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#108 |
Senior Member
![]() Join Date: Feb 2002
Location: Tucson, AZ USA
Posts: 7,255
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Re: Post Your Straight Six Pics!
Could be the Q-jet also has vacuum secondaries, so the engine only demands what it needs...? I have little experience with them, all bad, but I guess back in the day with full corporate support, they worked OK. The Re-mans you get from Checker Auto and the like all suck.
Pulltill-- Carter used to make a 400 CFM AFB. [It's not commercially viable for Edelbrock to go that small now.] Can you lift the numbers from the front passenger-side "foot"? Trenz -- Is that a Yorx A/C compressor powering a set of triple airhorns? You are one mad, bad and dangerous dude.
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Every 25 years I like to rebuild that 292, whether it needs it or not. |
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#109 |
SWBs: 67 2x4, 67 4x4, 70 4x4
Join Date: Nov 2007
Location: Conroe, TX
Posts: 483
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Re: Post Your Straight Six Pics!
Here's mine.
I have a rebuilt engine and am having hell getting the exhaust manifold to seal after the first cylinder at the bottom. I am also curious if the exhaust preheat valve could be sticking and causing additional back preasure. It is not sticking, but what if I wired it open? The first picture is at rest with the manifold warm, the second the spring is under slight preasure to hold in that postion. I have a really quiet muffler on it, so I expect I have some back preasure anyway. I put the second gasket on and it did not seal at all, looking for ideas. I thought I read that you must put the intake and exhaust on together but not bolted up, tighten everything, then tighten the preheat cavity. Also looking for a tuning schematic for the 1BBL carbs if you might know where to find one. Mike CUSTOMAL@FLASH.NET
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FINISHED Project thread: 67 SWB 4x4 FINISHED Project thread: 67 SWB 6 cyl cruiser Project thread: Road Toad 70 SWB Step, 4x4, 292, 3OT 01 C5 convertable 08 Z06 |
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#110 |
Tot Roddin'
Join Date: Apr 2005
Location: Mid-MO
Posts: 24,461
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Re: Post Your Straight Six Pics!
Mike that thing is beautiful!
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-Nate ![]() 1969 CST SWB - Project Blank Slate (4.5/6" ECE Static Drop, 6-lug disc brake upgrade (manual), Billet Specialties Vintec 20x8.5 255/40 (F) 20x10 295/40 (R), 250 I-6) 1960 AMF Skylark - Tot Roddin' (Lowered with custom frame; soon to include custom push bar and interior) 2008 Silverado CrewCab 1LT (5.3L, 3:73, 4x4, LT1, Z-71, Towing Package) |
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#111 |
SWBs: 67 2x4, 67 4x4, 70 4x4
Join Date: Nov 2007
Location: Conroe, TX
Posts: 483
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Re: Post Your Straight Six Pics!
Thanks!
Now I just need to get it running good.
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FINISHED Project thread: 67 SWB 4x4 FINISHED Project thread: 67 SWB 6 cyl cruiser Project thread: Road Toad 70 SWB Step, 4x4, 292, 3OT 01 C5 convertable 08 Z06 |
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#112 |
Tot Roddin'
Join Date: Apr 2005
Location: Mid-MO
Posts: 24,461
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Re: Post Your Straight Six Pics!
Would you mind posting a few more pics of your setup? Also is this in your '70 or your '67?
Any overall shots of your truck? What can I say... I am intrigued by your truck! ![]()
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-Nate ![]() 1969 CST SWB - Project Blank Slate (4.5/6" ECE Static Drop, 6-lug disc brake upgrade (manual), Billet Specialties Vintec 20x8.5 255/40 (F) 20x10 295/40 (R), 250 I-6) 1960 AMF Skylark - Tot Roddin' (Lowered with custom frame; soon to include custom push bar and interior) 2008 Silverado CrewCab 1LT (5.3L, 3:73, 4x4, LT1, Z-71, Towing Package) Last edited by 72BlckButy; 06-01-2009 at 09:51 PM. |
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#113 |
SWBs: 67 2x4, 67 4x4, 70 4x4
Join Date: Nov 2007
Location: Conroe, TX
Posts: 483
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Re: Post Your Straight Six Pics!
Here are my build sites.
I have 2) 67s, one 2x4 and one 4x4. If you have questions let me know. It is easier for me to send you there than convert the pictures back to a format that the site can handle. If you want more detail let me know. I can email them. Not too much on the 70 292. We are not planning to restore it, but it is a daily driver and we are getting kind of fond of it....... http://67-72chevytrucks.com/vboard/s...d.php?t=289840 http://67-72chevytrucks.com/vboard/s...=1#post2826812
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FINISHED Project thread: 67 SWB 4x4 FINISHED Project thread: 67 SWB 6 cyl cruiser Project thread: Road Toad 70 SWB Step, 4x4, 292, 3OT 01 C5 convertable 08 Z06 |
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#114 |
Tot Roddin'
Join Date: Apr 2005
Location: Mid-MO
Posts: 24,461
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Re: Post Your Straight Six Pics!
Those threads will be fine. If I run into any questions, I will be sure to ask. I checked out the '67 and it is truly amazing what you've done with it.
Thanks for posting those links, and get ready for a few questions! ![]()
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-Nate ![]() 1969 CST SWB - Project Blank Slate (4.5/6" ECE Static Drop, 6-lug disc brake upgrade (manual), Billet Specialties Vintec 20x8.5 255/40 (F) 20x10 295/40 (R), 250 I-6) 1960 AMF Skylark - Tot Roddin' (Lowered with custom frame; soon to include custom push bar and interior) 2008 Silverado CrewCab 1LT (5.3L, 3:73, 4x4, LT1, Z-71, Towing Package) |
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#115 |
Registered User
Join Date: Jan 2008
Location: Anmore BC
Posts: 78
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Re: Post Your Straight Six Pics!
Inline thread is still alive! Holley/Offenhauser project is all done.
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#116 |
Tot Roddin'
Join Date: Apr 2005
Location: Mid-MO
Posts: 24,461
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Re: Post Your Straight Six Pics!
That looks good!
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-Nate ![]() 1969 CST SWB - Project Blank Slate (4.5/6" ECE Static Drop, 6-lug disc brake upgrade (manual), Billet Specialties Vintec 20x8.5 255/40 (F) 20x10 295/40 (R), 250 I-6) 1960 AMF Skylark - Tot Roddin' (Lowered with custom frame; soon to include custom push bar and interior) 2008 Silverado CrewCab 1LT (5.3L, 3:73, 4x4, LT1, Z-71, Towing Package) |
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#117 |
Kid's Mechanic
Join Date: Nov 2006
Location: Kansas City
Posts: 8,241
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Re: Post Your Straight Six Pics!
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#118 |
Registered User
Join Date: Nov 2006
Location: Springfield/Kansas City
Posts: 1,842
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Re: Post Your Straight Six Pics!
Nice! I love these little monsters with open headers!
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#119 | |
I had a V-8
Join Date: May 2003
Location: Phoenix AZ
Posts: 1,116
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Re: Post Your Straight Six Pics!
Quote:
Looks good!!
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1972 K20 Suburban, 5.9L Cummins, Banks Power Pack, NV4500HD, NP205, H.A.D., D60/14FF ARB Link To Build: HERE. |
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#120 | |
Junior Member
Join Date: Dec 2006
Location: Southeast Missouri
Posts: 2,436
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Re: Post Your Straight Six Pics!
Quote:
I have not checked the one on the 250 in my '67 yet so I don't know if the previous owner wired it open or not. Danny
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'67 Chevy C-20 short stepper - build complete, 454/SM-465. '75 C-30 Single Cab DRW-350 small block/NP-435. '77 GMC-6500 Dump Truck, 427 Tall Deck. '92 GMC K-3500 Duallie, 454/4L80E. |
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#121 |
Registered User
Join Date: Nov 2009
Location: alabama
Posts: 2,079
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Re: Post Your Straight Six Pics!
inline 6 guys, i love the pics of the inlines! i came across this after doing a search. i am trying to find a good picture of where to hook my power brake hose from the booster to the engine. i did the conversion from 73-87. now i just have to hook the tube up to my 6. thanks
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#122 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,602
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Re: Post Your Straight Six Pics!
Made2drag. Are you all stock intake carb etc. or modded?
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#123 |
Registered User
Join Date: Nov 2009
Location: alabama
Posts: 2,079
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Re: Post Your Straight Six Pics!
geezer, its all stock (250)
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#124 |
Out of the carpool lane.
Join Date: Jan 2000
Location: Clark Co, WA
Posts: 5,673
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You can hook it up to the intake manifold. It doesn't matter where, just hook it up wherever is convenient at the intake manifold. The booster requires vacuum and it gets it from the vacuum the intake manifold creates.
![]() As a side note, I was out in the garage last night tinkering with the 6 in my Camaro. Trying to get excited about cars and this forum again.
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1968 C-10 SWB, 5.7 Vortec/700R4/3.73 posi, Torch Red 1968 Camaro, 250/Powerglide, all original (No, I'm not gonna drop a 350 in it!...Jeez!) 2000 Honda VFR in the faster yellow! 2008 Husqvarna TE-610 1967 C-10 SWB 'Six Appeal'-Gone but not forgotten... |
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#125 |
Registered User
Join Date: Nov 2009
Location: alabama
Posts: 2,079
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Re: Post Your Straight Six Pics!
thanks brad! i went out and saw a square headed bolt that unscrewed. now i just need to find some kind of fitting to accept the hose. maybe i can find one at the hardware store. and yes, this site does cure the motivation blues!
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