Raising the V8 in the Car

when you get the floor jack up to where you need it, try to find some way of forcing it to stay up/open... jam a chunk of wood into the opening or stand a hammer up in there - something - they can slowly loose position and cause you some serious trouble - jacks are made to raise "it" up so you can put "it" on a stand - not to keep it up there.. 5/10min. is one thing.. too much more than that and you really should use a better support. Never crawl under anything that isn't solidly supported!