1975 E350
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1975 E350
sorry about posting in wrong heading. But I will try again --1975 E350 van chassis w/ motor home 351 cid not sure if it is a w or c ( the intake does not have a valley pan type gasket) small bolt pattern c6 auto trans. My question is what is base timing and does the distributor require manifold vacuum or secondary throttle vacuum. I know this unit is heavy -- but it feels like the engine is bogged down and not making the rpms. passing gear seems fine as i can hear the engine taching up.
thanks David
thanks David
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Joined: Apr 2003
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From: Wyoming
Base timing should be 12 degrees BTC. You might have a 351M rather than w or c. Hopefully there is a sticker somewhere under the hood with all that info.
Try a search on the older truck forums on the vacuum source question - it comes up fairly regularly.
Try a search on the older truck forums on the vacuum source question - it comes up fairly regularly.
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From: Simi Valley, CA
Originally Posted by davidsquires
sorry about posting in wrong heading. But I will try again --1975 E350 van chassis w/ motor home 351 cid not sure if it is a w or c ( the intake does not have a valley pan type gasket) small bolt pattern c6 auto trans. My question is what is base timing and does the distributor require manifold vacuum or secondary throttle vacuum. I know this unit is heavy -- but it feels like the engine is bogged down and not making the rpms. passing gear seems fine as i can hear the engine taching up.
thanks David
thanks David
No 351C's (8 valve cover bolts) were used on F Series trucks, Econolines or Bronco's...ever.
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Originally Posted by davidsquires
sorry about posting in wrong heading. But I will try again --1975 E350 van chassis w/ motor home 351 cid not sure if it is a w or c ( the intake does not have a valley pan type gasket) small bolt pattern c6 auto trans. My question is what is base timing and does the distributor require manifold vacuum or secondary throttle vacuum. I know this unit is heavy -- but it feels like the engine is bogged down and not making the rpms. passing gear seems fine as i can hear the engine taching up.
thanks David
thanks David
Try direct vacuum first, because this will give you extra vacuum advance at idle, keeping your spark plugs cleaner over time; however, some motors tend to idle too rough or too fast hooked up direct, in which case, you should run ported vacuum.
http://www.PerformanceDistributors.com
info@performancedistributors.com
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