engine swap
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New User
Joined: Apr 2001
Posts: 1
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engine swap
i spent last weekend swapping a worn out 5.0 in my 1994 f150 for a motorsport 340hp long block. used all original wiring, comp, mass air, intake, etc.., installed aftermarket headers and exhaust. my problem(s) motor runs like a bear at anything above idle, but will not idle, also seem to be lacking in vaccum dept. brake pedal feels like a brick when around idle but fine when in the upper rpm range any thoughts???
Senior User
Joined: Apr 2000
Posts: 396
Likes: 0
engine swap
Make sure all vacuum lines are connected and correct. If you have a gauge, see what kind of vacuum the engine is producing. Should be around 15-20 inHg. The low power assist for your brakes makes me think you have a vacuum leak.
88 F-150 4X4 XLT Lariat w/5.0 EFI 5 spd (DAILY DRIVER)
86 Ranger 2WD w/2.3L EFI 5 spd to be 351W 4bbl C4 (NEW TOY- DETAILS WHEN FINISHED)
85 Old Cutlass Supreme 350/TH350 Holley 4160,Edelbrock Performer intake, el-cheapo headers, High Energy Cam 270H series cam, 15.588 best 1/4 mile with original 10 bolt 2.41 gears (OLD TOY)
88 F-150 4X4 XLT Lariat w/5.0 EFI 5 spd (DAILY DRIVER)
86 Ranger 2WD w/2.3L EFI 5 spd to be 351W 4bbl C4 (NEW TOY- DETAILS WHEN FINISHED)
85 Old Cutlass Supreme 350/TH350 Holley 4160,Edelbrock Performer intake, el-cheapo headers, High Energy Cam 270H series cam, 15.588 best 1/4 mile with original 10 bolt 2.41 gears (OLD TOY)
