What to do???

1970-350

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I’d love to drop a 455 into my 1970 LeMans but finding the one I want is costly.. So my question for anyone that has done it. What do you all think about the bolt on look like a carburetor EFI system.. I’d be looking at the Sniper EFI that is self learning.. Any input and advice from anyone who has done it would be great.. Let me hear your thoughts guys..
 

melsg5

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What is your goal in looking at the EFI system?
Have you considered a 400 if you cant find a 455?
Do you currently have a 4bbl carburetor and intake if not what intake are you going to use with the EFI?
 

1970-350

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Yes have an Edelbrock Performer Intake with Edelbrock 600cfm 4bbl carb.. My goal is more consistent drivability, while eliminating having to worry about cold starts. With the EFI set up I should gain some MPG and nicer drivability. Also a little power gain as well.
 

melsg5

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So looking at Summit Racing the Quadrajet type of Sniper sells for $1,300.
Before dropping that kind of money, have you recurved your distributor?
Have you connected the distributor vacuum advance to a full time vacuum port?
Have you adjusted the choke to correct your cold start issue?
 
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