292 or 250 what to choose - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

CPNEJR · 03-09-2007, 09:54 PM

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.

RACINJASON22 · 03-09-2007, 11:00 PM

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.

**'68OrangeSunshine** · 03-10-2007, 03:41 AM

Quote:

Originally Posted by davidh

What size valve does a 292 normally have for intake??

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.

**Bob B.** · 03-10-2007, 04:22 AM

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.

JAKES 68GMC · 03-10-2007, 11:40 AM

Go 292. Bigger is better.

davidh · 03-10-2007, 12:59 PM

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.

ilovetara · 03-11-2007, 07:53 PM

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.

davidh · 03-12-2007, 01:08 PM

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.

shorty72 · 03-15-2007, 10:30 PM

what kind of mpg does the 292 inline 6 get? is it better then 10?
thanks

**'68OrangeSunshine** · 03-16-2007, 04:07 AM

Quote:

Originally Posted by shorty72

what kind of mpg does the 292 inline 6 get? is it better then 10?
thanks

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.

davidh · 03-16-2007, 01:16 PM

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.

ks147j111928 · 03-19-2007, 12:03 AM

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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stsalvage · 03-19-2007, 04:45 AM

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

**Palf70Step** · 03-19-2007, 05:28 AM

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.

**'68OrangeSunshine** · 03-19-2007, 05:31 AM

Quote:

Originally Posted by ks147j111928

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?
Attachment 251600

You might ask over at:
www.inliners.org
Try the Performance Forum.

davidh · 03-19-2007, 11:24 AM

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.

ks147j111928 · 03-19-2007, 08:25 PM

68 Orange, thanks a ton for that link!!! Am already saving for future juicing of the mill...

03-09-2007, 09:54 PM	#26
CPNEJR Registered User Join Date: Sep 2003 Location: Franconia,N.H. Posts: 1,029	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. __________________ (Only) Member of the CPNE Fan Club Aint that the truth 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)

03-09-2007, 11:00 PM	#27
RACINJASON22 GEARHEAD Join Date: Jan 2007 Location: CENTRAL,PA Posts: 2,284	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. __________________ 72 SWB 2WD MY PROJECT 72 LWB 4X4 FUTURE PROJECT SUBSCRIBE HEREBOARD VENDORS HERE NORWOOD MEET SURVIVOR!

03-10-2007, 04:22 AM	#29
Bob B. Senior Member Join Date: Aug 2005 Location: Los Angeles Posts: 1,321	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. __________________ 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.

03-10-2007, 11:40 AM	#30
JAKES 68GMC Aluminum slot wheels rule... Join Date: Jan 2006 Location: Maine Posts: 6,212	Re: 292 or 250 what to choose Go 292. Bigger is better.

03-10-2007, 12:59 PM	#31
davidh Senior Member Join Date: Feb 2004 Location: Ponca city now kingfisher Oklahoma Posts: 1,221	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. __________________ Even the nicest dodge-chrysler is only 2years away from being parked outside of Section 8 housing.

03-11-2007, 07:53 PM	#32
ilovetara My truck is in pieces! Join Date: Oct 2006 Location: Abbotsford BC Canada Posts: 143	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. __________________ 69 Chevy C10 Long Finally down to the frame! My Build Progress Pics

03-12-2007, 01:08 PM	#33
davidh Senior Member Join Date: Feb 2004 Location: Ponca city now kingfisher Oklahoma Posts: 1,221	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. __________________ Even the nicest dodge-chrysler is only 2years away from being parked outside of Section 8 housing.

03-15-2007, 10:30 PM	#34
shorty72 Registered User Join Date: Aug 2005 Location: Oregon Posts: 86	Re: 292 or 250 what to choose what kind of mpg does the 292 inline 6 get? is it better then 10? thanks

03-16-2007, 01:16 PM	#36
davidh Senior Member Join Date: Feb 2004 Location: Ponca city now kingfisher Oklahoma Posts: 1,221	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. __________________ Even the nicest dodge-chrysler is only 2years away from being parked outside of Section 8 housing.

03-19-2007, 12:03 AM	#37
ks147j111928 ASE Certified Spoon Operator Join Date: Oct 2006 Location: Colorado Springs, CO Posts: 157	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? __________________ 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

03-19-2007, 04:45 AM	#38
stsalvage Scrapper 1 Join Date: Jan 2007 Location: Riverside Calif Posts: 1,649	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

03-19-2007, 05:28 AM	#39
Palf70Step State of Confusion! Join Date: Jul 2002 Location: Gulfport, MS USA Posts: 46,816	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. __________________ 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!

03-19-2007, 11:24 AM	#41
davidh Senior Member Join Date: Feb 2004 Location: Ponca city now kingfisher Oklahoma Posts: 1,221	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. __________________ Even the nicest dodge-chrysler is only 2years away from being parked outside of Section 8 housing.

03-19-2007, 08:25 PM	#42
ks147j111928 ASE Certified Spoon Operator Join Date: Oct 2006 Location: Colorado Springs, CO Posts: 157	Re: 292 or 250 what to choose 68 Orange, thanks a ton for that link!!! Am already saving for future juicing of the mill... __________________ 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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