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Old 02-28-2012, 05:34 PM   #8
motornut
78K & 79C Jimmys
 
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Join Date: Nov 2009
Location: Ottawa Ont CANADA
Posts: 7,901
Re: engine lacking power

if it's got a vac line to the tranny from the carb area
check the vac module @ the tranny seen the rubber/steel line rot and make a vac leak
can even knocked that off in the bush
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1978 GMCJimmy4X4-350/203
1979 GMCJimmy4X2-305/350
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