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Old Aug 1, 2003 | 09:35 PM
  #1  
i_alone's Avatar
i_alone
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From: Edmonton Alberta Canada
83 351W Questions

I have a couple questions on the early 80's 351w w/ 2bbl carb

first off, can I change the lifters in the engine with out having to remove the heads? or should I remove them, what would be easier. I'd personally like not to remove them due to money concerns

second, I have been looking around and using the search on this forum, I was wondering if anyone knows the horsepower and torque ratings of the 83 351w w/ 2bbl carb, I'm thinking in the range of 170-180 hp, and 260-270 lb/ft of torque. I think that I might be a bit optimistic on that.

Thanks, Tom

 
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Old Aug 1, 2003 | 10:14 PM
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From: Still under the hood in O
83 351W Questions

Don't know about the HP/TQ ratings but yes you can change the lifters without removing the heads.

All you need to do is remove the intake and rocker covers.
You need to loosen the rockers to remove the pushrods, then you can swap the lifters.
 
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Old Aug 2, 2003 | 01:18 AM
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83 351W Questions

The stock ratings are 139hp and 278tq. You can easily in crease that though.
 
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Old Aug 2, 2003 | 06:08 PM
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83 351W Questions

I'm guessing by a 4 bbl intake, 650 cfm carb and headers, should take me up to 2-220 hp and about 3-320 tq
 
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Old Aug 2, 2003 | 07:28 PM
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83 351W Questions

Still sounds a bit high. I think you could gain 50 to 60 hp with mods and somekind of open exhaust.
 
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