Extractors on to a 292 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jdaley · 01-03-2010, 03:18 AM

I will be fitting a set of extractors to my 292.
With my motorcycle engines we need to rejet the carby ifwe alter the exhaust so dramaticly.

Are there any changes to the system I should do when the extractors are fitted please?

79gmcc15 · 01-03-2010, 04:47 AM

Extractors I am guessing you mean headers????

jdaley · 01-03-2010, 05:22 AM

Yes, we call them extractors on Motorcycle engines.
I never thought there would be a different word for them!

79gmcc15 · 01-03-2010, 06:58 AM

they might be called that some times. but Ive never heard it called that before.
I hope you don't think I am pickin on you. I am learning more then you are, I am sure.

Big Port Jimmy 6 · 01-03-2010, 02:44 PM

Well that all depends on how the engine is set up before. The 292 is not going to be a sensitive as the motorcycle to the exhaust change. Your fuel system will probably be adequate with adding only headers. You would probably have to have cam and head work before you get into serious fuel system changes. Find a copy of the Santucci six cylinder books, there is a new one coming out soon. They have a wealth of info on the 292\250 family. Consider looking into the inliners international forums also. Good luck Jay

jdaley · 01-03-2010, 05:05 PM

79 I am not offended by the question.
I too normally ask many because often acronyms are used and it is double dutch to me, I dont understand anything. IE
9", LSD etc until I kept asking.
Jimmy, thanks for the info I intend to keep it as a daily runner, so I guess there is not much to change.

01-03-2010, 03:18 AM	#1
jdaley Registered User Join Date: Dec 2009 Location: Melbourne, Australia Posts: 71	Extractors on to a 292 I will be fitting a set of extractors to my 292. With my motorcycle engines we need to rejet the carby ifwe alter the exhaust so dramaticly. Are there any changes to the system I should do when the extractors are fitted please? __________________ John Daley Melbourne, Australia 1946 Chev Ute 1977 Chev Tray Road racing sidecars

01-03-2010, 04:47 AM	#2
79gmcc15 Gettin It One Pice At A Time Join Date: Oct 2004 Location: everett, washington Posts: 2,688	Re: Extractors on to a 292 Extractors I am guessing you mean headers???? __________________ RIP ELJAY Work In Progress 1979 GMC C1500 Trailering Special. Getting the truck done, one piece at a time. “You can tell a lot about a fellow’s character by his way of eating jellybeans.”Ronald Reagan “I don’t know the key to success but I know the key to failure is trying to please everybody.” Bill Cosby

01-03-2010, 05:22 AM	#3
jdaley Registered User Join Date: Dec 2009 Location: Melbourne, Australia Posts: 71	Re: Extractors on to a 292 Yes, we call them extractors on Motorcycle engines. I never thought there would be a different word for them! __________________ John Daley Melbourne, Australia 1946 Chev Ute 1977 Chev Tray Road racing sidecars

01-03-2010, 06:58 AM	#4
79gmcc15 Gettin It One Pice At A Time Join Date: Oct 2004 Location: everett, washington Posts: 2,688	Re: Extractors on to a 292 they might be called that some times. but Ive never heard it called that before. I hope you don't think I am pickin on you. I am learning more then you are, I am sure. __________________ RIP ELJAY Work In Progress 1979 GMC C1500 Trailering Special. Getting the truck done, one piece at a time. “You can tell a lot about a fellow’s character by his way of eating jellybeans.”Ronald Reagan “I don’t know the key to success but I know the key to failure is trying to please everybody.” Bill Cosby Last edited by 79gmcc15; 01-03-2010 at 06:58 AM.

01-03-2010, 02:44 PM	#5
Big Port Jimmy 6 Addicted to Rust Join Date: Dec 2009 Location: Abbeville SC Posts: 1,030	Re: Extractors on to a 292 Well that all depends on how the engine is set up before. The 292 is not going to be a sensitive as the motorcycle to the exhaust change. Your fuel system will probably be adequate with adding only headers. You would probably have to have cam and head work before you get into serious fuel system changes. Find a copy of the Santucci six cylinder books, there is a new one coming out soon. They have a wealth of info on the 292\250 family. Consider looking into the inliners international forums also. Good luck Jay __________________ Current trucks: (48 GMC100 320 inliner) Gone (48 Suburban in pieces) Sold 87 GMC CCSB 5.3 4l60E Daily Driver ECTA National record holder XO/PP We never really grow up, we just learn how to act in public.

01-03-2010, 05:05 PM	#6
jdaley Registered User Join Date: Dec 2009 Location: Melbourne, Australia Posts: 71	Re: Extractors on to a 292 79 I am not offended by the question. I too normally ask many because often acronyms are used and it is double dutch to me, I dont understand anything. IE 9", LSD etc until I kept asking. Jimmy, thanks for the info I intend to keep it as a daily runner, so I guess there is not much to change. __________________ John Daley Melbourne, Australia 1946 Chev Ute 1977 Chev Tray Road racing sidecars



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