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Old 07-15-2018, 05:13 PM
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Tbeach Tbeach is offline
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Join Date: Nov 16, 2014
Location: Southern California
Posts: 16
Howell EFI & Engine rebuild & correct cam

I have a 1991 Grand Wagoneer in California with 112,000 miles. Recently had the engine rebuilt, with some mild upgrades. Also upgraded to Howell EFI. The chosen cam is a Comp Cam XE 262H. Duration at .050" intake 218 exhaust 224.

Everything is together, idle is smooth, but there is a low end hesitation and it stalls every once in awhile. We have checked grounds, the alternator has been upgraded, and check all vacuum connections. With many hours researching this forum, I have come to the conclusion that the camshaft is the issue, specifically the duration of the cam. Howell recommends below 210 and 220, and I have also read on this forum to stay below 208 and 215.

So short of removing the cam and installing a new cam with the lower duration, are there any other workarounds?

Thanks in advance for your input.
91 GW, rebuilt and mild upgrade AMC 360, Howell EFI, 4" lift, HEI, 31" BFG AT KO2.
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