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| | | | Joined: Mar 2004 Posts: 96 Wrench Fetcher | | Wrench Fetcher Joined: Mar 2004 Posts: 96 | okay, the obvious answer would be that I have the wrong fuel pump...Carquest #4666. Should fit a 1959 261...it is dual-action. Problem is that it won't fully insert into the hole on the side of the block. The lever on the pump appears to intercept the lobe on the cam too soon. What I am left with is a gap of about 3/8". I thought it was the wrong part so I test fit the old pump and it had the same problem. I am doing a complete rebuild on this engine, so it has the new M4F cam from Patrick's...could this be part of the problem?
Whad you do?!?
Shane
1953 Chevrolet 3600
| | | | | Joined: Mar 2004 Posts: 3,068 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 3,068 | Roll your engine over some, until the cam is not about to raise the pump lever. The pump may still have alittle tension on it even if the lever is on the flat side of the cam,
Scott | | | | | Joined: Mar 2004 Posts: 96 Wrench Fetcher | | Wrench Fetcher Joined: Mar 2004 Posts: 96 | Scott, it feels like the pump lever has a positive stop and I don't think that I can get it in any further. If I turn the engine and do get it to seat...what's to keep it from doing some damage when the lobe does spin around to the position I was having trouble with? Is this something that is worked out during the initial fire-up and run-in period?
Whad you do?!?
Shane
1953 Chevrolet 3600
| | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | Be shure your not trying to put it on upside down. It can be confuseing at times. 
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Mar 2002 Posts: 9,115 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,115 | You don't want to bolt it down and then turn it over, if you have a clearance problem. You are saying that problem is outwards, not sideways, right? You should be able to take measurements and prove to yourself that things don't add up. If the old fuel pump gives the same result, you have a problem with something else. | | | | | Joined: Mar 2004 Posts: 96 Wrench Fetcher | | Wrench Fetcher Joined: Mar 2004 Posts: 96 | okay, got it figured out...I spun the engine and got it to the thinnest part, I will check clearance here shortly by fully turning the cam to make sure that nothing binds up. Thanks for all the suggestions. 
Whad you do?!?
Shane
1953 Chevrolet 3600
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