Inline 6 question for you - The 1947 - Present Chevrolet & GMC Truck Message Board Network

longorange68 · 07-24-2006, 11:52 PM

Got a question and I am hoping not to take too much crap for it. Would a 292 crank fit in a 250 block? Is the 292 a "stroker" version of the 250? I am looking in to keeping the 250 that is in my truck just to be different, but wondering also if I could get a few cubic inches out of it.... Let me know if this is possible or if I am just sniffing glue. Anyone know where to get a reasonably priced gear vendors overdrive?

Josh

68haywagon · 07-24-2006, 11:57 PM

The 292 has a taller block to accomidate the stroke of the 292, so I don't think it would work. I could be wrong...it wouldn't be the first or last time

I have no clue on the gear vendors stuff. Sorry.

Mike

**'68OrangeSunshine** · 07-25-2006, 12:43 AM

There was such a thing as a "cheater 292". IIRC it was a 250 block overbored with a 292 crank, and possibly custom length rods and special pistons. It is prohibitively expensive to machine it, I hear. The main reason was to bend some racing rules so you could get more cubes on a STD-LD block if the taller [292] HD-TD block was prohibited by class rules.
You could get a clearer answer over at www.inliners.org
(I never saw one, just heard about it on the Inliners board.)
But you could bore out a stock 250 block to .030 or .060 and come up with an aggressive 266 CI...
Check out "Chevy Inline Six Cylinder Power Manual" by Leo Santucci. He's got a lot of tricks in that book.

cell · 07-25-2006, 02:39 PM

I saw something like that on ebay just the other day (a 250 which had been "stroked" to a 292).

http://cgi.ebay.com/ebaymotors/Chevy...12257769QQrdZ1

Fred T · 07-25-2006, 07:25 PM

Santucci's book is what you need for building a late model six. The biggest obstacle is getting them to breathe properly. The head design is horrible. You need a cross-flow head, but most can't afford the 2-4 grand for one.

I will warn you, building a six is costly and addictive.

**'68OrangeSunshine** · 07-26-2006, 12:55 AM

Quote:

Originally Posted by Fred T

I will warn you, building a six is costly and addictive.

AMEN.

07-24-2006, 11:52 PM	#1
longorange68 Registered User Join Date: Apr 2006 Location: Hockinson, Washington Posts: 114	Inline 6 question for you Got a question and I am hoping not to take too much crap for it. Would a 292 crank fit in a 250 block? Is the 292 a "stroker" version of the 250? I am looking in to keeping the 250 that is in my truck just to be different, but wondering also if I could get a few cubic inches out of it.... Let me know if this is possible or if I am just sniffing glue. Anyone know where to get a reasonably priced gear vendors overdrive? Josh __________________ 1968 Chevrolet C-10, 2WD, Longbox, Vortec 350, Monster Transmission 700R4, 3.73 gears Good judgment comes from experience, and experience, well......that comes from bad judgment. 1968 Chevy C-10 "Longshot": Bought used from my Uncle George in 1994 and proceeding to beat the hell out of it for 4 years. Sold it. Bought it back, dumped an ungodly amount of money into it since then.

07-24-2006, 11:57 PM	#2
68haywagon I'm watching you! Join Date: Feb 2005 Location: Levittown, PA Posts: 1,822	Re: Inline 6 question for you The 292 has a taller block to accomidate the stroke of the 292, so I don't think it would work. I could be wrong...it wouldn't be the first or last time I have no clue on the gear vendors stuff. Sorry. Mike __________________ 2012 Chevrolet Silverado 1500 Z71 4WD 1993 Chevrolet C-1500 W/T - Blue - 4.3L V-6, 4 speed auto - Dad's (RIP) 1992 Chevrolet S10 - LS swap project 1968 Chevrolet C-10 longbed fleetside - sold

07-25-2006, 12:43 AM	#3
'68OrangeSunshine Senior Member Join Date: Feb 2002 Location: Tucson, AZ USA Posts: 7,210	Re: Inline 6 question for you There was such a thing as a "cheater 292". IIRC it was a 250 block overbored with a 292 crank, and possibly custom length rods and special pistons. It is prohibitively expensive to machine it, I hear. The main reason was to bend some racing rules so you could get more cubes on a STD-LD block if the taller [292] HD-TD block was prohibited by class rules. You could get a clearer answer over at www.inliners.org (I never saw one, just heard about it on the Inliners board.) But you could bore out a stock 250 block to .030 or .060 and come up with an aggressive 266 CI... Check out "Chevy Inline Six Cylinder Power Manual" by Leo Santucci. He's got a lot of tricks in that book. __________________ Every 25 years I like to rebuild that 292, whether it needs it or not.

07-25-2006, 02:39 PM	#4
cell Active Member Join Date: Nov 2005 Location: Austin Posts: 217	Re: Inline 6 question for you I saw something like that on ebay just the other day (a 250 which had been "stroked" to a 292). http://cgi.ebay.com/ebaymotors/Chevy...12257769QQrdZ1

07-25-2006, 07:25 PM	#5
Fred T Cantankerous Geezer Join Date: Aug 2002 Location: Bel Aire, KS Posts: 6,264	Re: Inline 6 question for you Santucci's book is what you need for building a late model six. The biggest obstacle is getting them to breathe properly. The head design is horrible. You need a cross-flow head, but most can't afford the 2-4 grand for one. I will warn you, building a six is costly and addictive. __________________ Fred There is no such thing as too much cam...just not enough engine.



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