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Author
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Topic: e303 what is the correct vac at idle?
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slikstang
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Member # 4652
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posted
 
 
i just finished putting together a 5.0 with stock lower, gt-40 heads and stock intake manifold. it's an 88 so i converted it to mass air... got the car set at 10 deg before tdc with the stout out and the idle is at 800 and engine shakes a lot.. also the idle is very lumpy. after driving it the car seemed to hesitate a lot. the vac at 800 is only around 7-10. injectors stock and stock fuel pump. do i need upgraded fuel and a chip.... anybody with an e303 what does your vac look like.
thanks
kevin
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Mmm boost...
Posts: 51 | From: san jose | Registered: Jun 2004
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Wildfire532FB
CAFords OG
Member # 1482
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posted
My vac is at 13 at 900rpms
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68 Fastback
84 CJ7
94 HMMWV
95 GT
03 F350
17 Fusion Hybrid
Posts: 17578 | From: 530 | Registered: Jun 2002
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Fostang
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Member # 3752
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posted
8-10 average or more is fine.
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67' Fastback TT 408
67' Camaro Lsx
64' Corvette Fuelie
57' Chevy Bel Air Lsx
68’ Pony Convertible
66’ Pony Coupe
Posts: 3012 | From: Stockton/Danville | Registered: Nov 2003
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slikstang
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Member # 4652
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posted
so then you think that it's the fuel that he's missing becasue there is just no power right now.
thank
kevin
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Mmm boost...
Posts: 51 | From: san jose | Registered: Jun 2004
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NO-CLONE
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Member # 4594
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posted
I have an 86 5.0 and i just installed an e-303
cam, e7te heads, gt-40 upper and lower, 75mm t/b and spacer, long tube headers and off road h-pipe. I too have stock injectors but upgraded my
fuel pump to a 195 lph. I set my timming at 14
btdc and my idle too is very lumpy at 800 but clears up at about 1100 rpm.
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If the purpose of a wing is to apply down force to the drive wheels at high speeds, shouldn't the wing on most imports be mounted on the hood?
Posts: 306 | From: sac | Registered: Jun 2004
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slikstang
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Member # 4652
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posted
what is your vac... and did you drive the car before you installed the fuel pump..
thanks
kevin
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Mmm boost...
Posts: 51 | From: san jose | Registered: Jun 2004
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NO-CLONE
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Member # 4594
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posted
don't know what my vac is, ill check and post later. the fuel pump was one of the first mods i did, long before i did the head, cam and intake upgrade.
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If the purpose of a wing is to apply down force to the drive wheels at high speeds, shouldn't the wing on most imports be mounted on the hood?
Posts: 306 | From: sac | Registered: Jun 2004
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