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351 no power

Printed From: CorrectCraftFan.com
Category: General Correct Craft Discussion
Forum Name: General Discussion
Forum Discription: Anything Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=51375
Printed Date: May-21-2024 at 9:42pm


Topic: 351 no power
Posted By: fredaws
Subject: 351 no power
Date Posted: September-23-2023 at 9:43pm
1980 SN….351 Windsor.  90 ish lbs compression all around, new heads, new 2 brl carb (did not go 4 brl), new fuel lines and fuel pump, cleaned out gas tank, idles and accelerates great on trailer… in gear and off boat ramp it has no power and will not exceed 15-20 mph… sputters and pops with full throttle down…. Temp at 150+-does not want to run under a load…..  HELP AGAIN….CCF has helped with firing order and cooling problem… now this.. almost got it ,,,, FREDAWS

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Freddie


Replies:
Posted By: MrMcD
Date Posted: September-24-2023 at 11:25am
90 PSI is not much compression are you sure the new heads are the same chamber size and type?

Might also verify your timing is set correctly and the timing advance is working properly.


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Posted By: KENO
Date Posted: September-24-2023 at 2:56pm
What's the new 2 barrel carburetor you put on it?

Usually a pretty well worn out engine might have 90 pounds compression. 

Is the gauge accurate?

Did you test with the throttle fully open?

Since you have a normal rotation engine (earlier thread), do you know it's history?

And like already asked by MrMcD what's the timing set at?


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