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#492446
Mon Jan 12 2009 02:46 PM
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Joined: Nov 2007
Posts: 44
OP
'Bolter
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What intake, carbs ,header, cam, head work , piston and what ever else that i need to have done .Thanks for every ones help
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Joined: Jan 2001
Posts: 1,576
ODSS President
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Do some reading. Search "261". Loads of stuff. People may not be wanting to repeat what they've already said... lot's of information for your build. Also inliners.org this is the place for people that have addressed your quest several different ways.
Cosmo
"...my good horse Rocinante ('49 Chevy Half Ton), mine eternal and inseparable companion in all my journeys and courses." ...Don Quixote, Cervantes
"If you come to a fork in the road, take it."...Yogi Berra
"Rudeness is the weak man's imitation of strength." ...Eric Hoffer
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Joined: Jan 2000
Posts: 2,250
'Bolter
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Also get yourself a catalog from Patrick's, it's loaded with great info. And as Cosmo say's check out Inliners.org, 'Members' have access to tech advisors that can lead you in the best direction for your engine.
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Joined: Aug 2007
Posts: 1,912
Grumpy old guy playing with trucks, cars, and boats
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The problems we face today can not be addressed at the same level of intelligence we were at when we created them - Albert Einstein Or with the same level of $ - Me
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Joined: Jan 2008
Posts: 334
'Bolter
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the link that hoyt has posted above was started by me. it has been great. check out the articles that tc and sweet linked to. call patrick's. talked to them the other day. lots of good info, especially do's and dont's, and even some costly unnecessary work i was thinking of. http://www.patricksantiquecars.com/index.htm
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Joined: Oct 2005
Posts: 1,318
Shop Shark
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A couple suggestions......find a competent automotive machinist who has a history with Inline GM engines and be ready pay a little extra to get name brand replacement parts. I'd avoid the "rebuild kits" that feature the majority of "Offshore" parts and build on the mindset that the 4 main bearing 261 was initially a "torque builder" engine. Trying to nurse more revs out of a torque engine is just going to cost you big bucks and leave you disappointed with the end result.
By capitalizing on the low-end torque you can set up your GEARING to maximize the potential of your engine. I see no reason to spin a low rpm/high torque engine out of it's torque band. You'll extend your engine's service life, have better fuel economy and overall improved performance. I'm currently running a .72 S10 T5 transmission but have found the Camaro W/C T5 has an even better gear spread which will maximize performance within the torque band. If you haven't driven a GM Inline 6 with a 5 speed (and the correct gearing) you've missed a really fun experience.
As was pointed out, there are numerous "standard" add-on parts to slightly improve performance....some inexpensive machine shop modifications such as drilling the crank for a SBC harmonic balancer bolt to draw on your H/B, tweaking your full-flow filtering system, modifying the timing cover so it can be pulled without dropping the pan, and I also suggest a full rotational balance. So why balance a low-rpm engine? On my 60-235 we found a 13 gram differential in rod weights in the running core I purchased. Regardless of what anybody says, I'm thoroughly convinced it was additional money well spent.
The whole key to getting a good running engine is to find a really competent, enthusiastic engine machinist/builder. There are some little improvements he can suggest that will insure you get the most bang for your buck.
Dave
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