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Old 03-30-2014, 06:01 PM
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351w upgrades

This is my first post on here I bought my first mastercraft last march and I am starting to get it ready for this season. I know I have read plenty of threads on here about engine mods which has put my next project in motion I plan on upgrading to the gt40 or gt40p heads which ever are available locally I have also already ordered an Edelbrock performer intake manifold. I plan to order valve covers soon also but the question I had is are there any upgrades to the fuel system (such as pump) other than carb that is needed or any thing I may be overlooking? (It already has Holley carb on it I believe 4160 but unsure since boat is currently getting fiberglass work and new gel coat) Thank you for your input.
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Old 03-30-2014, 06:07 PM
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welcome - and longing forward to your progress and pictures
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Old 03-30-2014, 08:17 PM
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The stock fuel pump and the stock holley 4160 is plenty for gt40 heads and edelbrock performer intake manifold.
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Old 03-30-2014, 08:35 PM
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That's what I was thinking but my buddy that's helping me do the work asked so I decided to make sure. Thank you
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Old 03-30-2014, 09:02 PM
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Old 03-30-2014, 09:06 PM
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Old 03-30-2014, 10:14 PM
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GT40P heads casting number F77E-AA came on 97.5-2001 explorers, just don't use 96-97 explorer gt40 heads F1ZE-AA if at all possible they have larger combustion chambers which are slightly larger than the stock E7 or E8 heads which you probably already have, don't get me wrong they will give you a hp boost just not as much as the p heads.
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Old 03-31-2014, 04:29 PM
waterlogged882 waterlogged882 is offline
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Old 04-02-2014, 08:09 PM
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Thanks for the info!
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Old 04-03-2014, 07:43 PM
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And after spending 6 hours in the scrapyard today I managed to walk out with these gt-40p heads. Now on these holes need to be stepped out to 1/2 inch and the plugs need to be changed to brass any special setup for the springs or valves compared to stock to make it ready for the 351?
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