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#26 |
Registered User
Join Date: Sep 2003
Location: Franconia,N.H.
Posts: 1,029
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Re: 292 or 250 what to choose
the 292 and 250 make just about the same horspower not much difference there but its the torque of the 292 which makes it a workhorse. the main problem is that it was an option inline and it was bad on gas because of all the grunt. i too had a 250 with less than 50,000 miles on it and gave it to my brother to put in his suburban and i went with a 350 and now i want the suburban so i can have the engine back.
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(Only) Member of the CPNE Fan Club ![]() ![]() 67 C-10 350 with 3-speed tranny and 308 gears swb step ![]() 82 Z28 Camaro 355 small block over 350 hp and a borg warner super t-10 (blown engine) 72 Chevy K20 Suburban (future project) 70 Chevy K20 now 68 GMC K2500 2003 Chevy 2500hd ccsb 4X4 (daily driver) |
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#27 |
GEARHEAD
Join Date: Jan 2007
Location: CENTRAL,PA
Posts: 2,284
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Re: 292 or 250 what to choose
I personally have no experiance with the I6's but, I have hear my dad at least 100 time talk about his 66 pickup with a 250 smoke a good many SBC in short red light to red light runs. That coming from a true SBC fan.
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#28 |
Senior Member
![]() Join Date: Feb 2002
Location: Tucson, AZ USA
Posts: 7,276
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Re: 292 or 250 what to choose
Stock: 1.72" intake, 1.50" exhaust
Santucci says the physical limits of the chamber/bore keep the maximum diameters down to 1.970 in/ 1.625 exh.
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Every 25 years I like to rebuild that 292, whether it needs it or not. |
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#29 |
Senior Member
![]() Join Date: Aug 2005
Location: Los Angeles
Posts: 1,332
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Re: 292 or 250 what to choose
I don't know if you still can, but up until at least a few years ago you could still buy brand new, not rebuilt 292's from Chevy. Seems that a lot of them went into UPS trucks, and they were still used in Mexico.
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1967 GMC CM-2500 Camper Cruiser, 351E V-6, NP 435 4 speed, Dana 60, and factory A/C. 2012 GMC K-3500 WT regular cab, 6.0L Vortec, 6L90. |
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#30 |
Aluminum slot wheels rule...
Join Date: Jan 2006
Location: Maine
Posts: 6,212
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Re: 292 or 250 what to choose
Go 292. Bigger is better.
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#31 |
Senior Member
Join Date: Feb 2004
Location: Ponca city now kingfisher Oklahoma
Posts: 1,221
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Re: 292 or 250 what to choose
I'm picking up my redone head for my 292 in 30m. Plan on putting it on sunday. Small fortune in it. every int/ex valve replaced, all seats changed for unleaded, springs I"m going to have $350 in this dang thing. but if it runs like a timex its worth it.
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Even the nicest dodge-chrysler is only 2years away from being parked outside of Section 8 housing. |
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#32 |
My truck is in pieces!
Join Date: Oct 2006
Location: Abbotsford BC Canada
Posts: 143
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Re: 292 or 250 what to choose
I am still trying to get my 292 to start. Thats another story. Just not sure how much money to keep putting into it before I pull the whole thing.
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#33 |
Senior Member
Join Date: Feb 2004
Location: Ponca city now kingfisher Oklahoma
Posts: 1,221
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Re: 292 or 250 what to choose
If it its getting fuel and fire it should start up. check to make sure its getting spark, and look to see if its getting fuel, if its getting both and not starting check your timing, make sure your rotor is turning.
Rained yesterday so I didnt get my done. It looks pretty all chevy orange though.
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Even the nicest dodge-chrysler is only 2years away from being parked outside of Section 8 housing. |
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#34 |
Registered User
Join Date: Aug 2005
Location: Oregon
Posts: 86
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Re: 292 or 250 what to choose
what kind of mpg does the 292 inline 6 get? is it better then 10?
thanks |
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#35 |
Senior Member
![]() Join Date: Feb 2002
Location: Tucson, AZ USA
Posts: 7,276
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Re: 292 or 250 what to choose
I'm getting about 12.5 city with my 292. And it's got a hopped up cam and bigger intake valves, 4 Bbl [500 cfm] Edelbrock, Offy intake and Clifford headers.
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Every 25 years I like to rebuild that 292, whether it needs it or not. |
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#36 |
Senior Member
Join Date: Feb 2004
Location: Ponca city now kingfisher Oklahoma
Posts: 1,221
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Re: 292 or 250 what to choose
I've seen them in trucks on ebay and they were saying 14mpg. I don't think the difference between the 2 is a lot. You know like you talk with people who had a well tuned 454 that got more mpg than a worn out 350.
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Even the nicest dodge-chrysler is only 2years away from being parked outside of Section 8 housing. |
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#37 |
ASE Certified Spoon Operator
Join Date: Oct 2006
Location: Colorado Springs, CO
Posts: 157
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Re: 292 or 250 what to choose
Keeping my 292 even though I have a late model 305 roller cam lying in parts truck. Have the head at local speed shop, went in for a cleaning but ended up getting screw-in rocker studs, guide plates, new valves and springs. Thinking about roller rockers??? Anyone know anything about these?
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My six is bigger than your eight ![]() 67 K20 292 +.060" SM465 NP203 3.73s 86 4Runner, the daily on 31s 85 4Runner, the wheeler on 38s 92 x-cab truggy project for 2017... tons and 42s and V8 power ![]() |
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#38 |
Scrapper 1
Join Date: Jan 2007
Location: Riverside Calif
Posts: 1,649
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Re: 292 or 250 what to choose
i"m ONE SOLD ON THE iNLINE 6 THEY HAVE MORE TORQ THEN A sMALL BLOCK V8 AND WITH GAS CREEPING UP AGAIN THE 4 BB CARB WITH A 700r4 IS THE WAY TO GO I HEAR IF YOU TWIST A 292 YOU CAN BRAKE A ROD BUT THE 250 HAS A SSHORTER ROD AND MORE HOSER POWER AND IT WILL TAKE THE rpm's
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#39 |
State of Confusion!
![]() ![]() Join Date: Jul 2002
Location: Gulfport, MS USA
Posts: 46,900
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Re: 292 or 250 what to choose
Nothing wrong with either 6. I wish at times I had kept my 250 insted of going with the 350. For one it would be running right now.
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Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God! |
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#40 | |
Senior Member
![]() Join Date: Feb 2002
Location: Tucson, AZ USA
Posts: 7,276
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Re: 292 or 250 what to choose
Quote:
www.inliners.org Try the Performance Forum.
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Every 25 years I like to rebuild that 292, whether it needs it or not. |
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#41 |
Senior Member
Join Date: Feb 2004
Location: Ponca city now kingfisher Oklahoma
Posts: 1,221
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Re: 292 or 250 what to choose
Just got my 292 fired up last night!! after the new valve job. Its so smooth now. It sounds completely different too. Next weekend I think I'll put my HEI in it.
I had to turn the idle way down from where it had been. The motor takes a lot less effort to run now.
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Even the nicest dodge-chrysler is only 2years away from being parked outside of Section 8 housing. |
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#42 |
ASE Certified Spoon Operator
Join Date: Oct 2006
Location: Colorado Springs, CO
Posts: 157
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Re: 292 or 250 what to choose
68 Orange, thanks a ton for that link!!! Am already saving for future juicing of the mill...
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__________________
My six is bigger than your eight ![]() 67 K20 292 +.060" SM465 NP203 3.73s 86 4Runner, the daily on 31s 85 4Runner, the wheeler on 38s 92 x-cab truggy project for 2017... tons and 42s and V8 power ![]() |
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