| |
Click on image for the lowdown. 
====
| | |
9 members (68ironhead, Woodcmiami, 55shaker, Gdads51, GMCJammer51, 3B, LAJones48, mick53, 50Chevy3100),
107
guests, and
2
robots. | | Key: Admin,
Global Mod,
Mod | | | Forums66 Topics128,092 Posts1,056,455 Members48,443 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Sep 2008 Posts: 872 Shop Shark | | Shop Shark Joined: Sep 2008 Posts: 872 | One thing to note is that if you are doing a 4 banger (like a Go Devil engine) there will be a NORMAL 1-2 inch 'bounce'.. for any 4 banger. With only 4 intake valves there is a significant 'dead zone' between intakes opening.
Most of the vacuum videos/sites seem to center on 6-8cyl engines. If you have have a 4 cyl you *will* get a rapid, steady bounce only at idle. | | |
|
|
| |
