Speed Density
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Joined: Jun 2001
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From: High Point NC
Car: Buick
Engine: 231
Transmission: 200r4
Speed Density
My friend has a 91 305TBI auto,he has swapped a motor from a 91 350 TPI. This engine has no vacuum leaks and all new sensors also the tps/iac has been properly reset. The cam has lsa of 112 lift at 050 is .435/.455 duration is 209/216. Problem is car has a low vacuum signal and erratic idle. We are using the stock chip.
Thanks
Thanks
Last edited by No5.0; Oct 22, 2003 at 08:06 PM.
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Joined: Jul 2001
Posts: 3,931
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From: Palm Bay, Florida, USA
Car: 95 E-150 & 07 Kawasaki ZX-6R
Engine: A slow one & a fast one
Transmission: A bad one & a good one
Axle/Gears: A weak one & a chained one
What's the vacuum at, at what idle rpm? You SURE there's no vacuum leaks? That's an awfully mild cam to leach that much vacuum from ya... My 302 gets about 14-16 Hg's of vacuum at idle with a 110*, 220/220 duration, .498/.498 lift cam, which is on the low side but enough.
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