Cheched vacuum today and ......
Thread Starter
Le Mans Master
Joined: Sep 2000
Posts: 9,078
Likes: 7
From: DFW TX
Cruise-In VII Veteran
St. Jude Donor '07
Cheched vacuum today and ......
I'm pulling 20lbs after installing 1.6 ratio rockers, thats up from 16 before. These seems like alot. Do I need to adjust the timing? Also this is a MAP system from a 90.
Burning Brakes
Joined: Jun 2000
Posts: 865
Likes: 6
From: Auburn Michigan
Re: Cheched vacuum today and ...... (Budman78)
:confused: :confused: :confused: That does seem odd. I would think the vacuum would drop a little (at the same idle rpm) if you went to 1.6's due to the slight increase in overlap.
I've got 1.5's being pushed 218, .454, 110lsa, and I'm reading about 14 in. at 800rpm.
I've got 1.5's being pushed 218, .454, 110lsa, and I'm reading about 14 in. at 800rpm.
