My new '67 has doors that you need to slam fairly hard to stay shut. I thought when I bought it, it was the weatherstrip seals as both of them were not installed properly. So I took them off and although they close easier, it's still a bit of a slam. I bought new weatherstrip (metro was what...

Folks, looking to pick up an intake for a 400 SBC, destined to be a mid range grunt motor.... Performer or GM ZZ4? Plan on using a Qjet so like the dual flange. Any preferences amongst the SBC gurus out there> ? Leaning towards the GM ZZ4 as its a bit more modern design. Thanks!

Circle Track application. Owner is the Engine builder and owns a large Engine Shop. House Car. Spintron tested lobe profile that has been in use for over 8 years with at least 100 sticks in the field. Customer has run same profile for last 4 years in personal engines and engines he has sold...

Have a 454, 30 over, straub cam .620/.620 Lift 233/233 .050 109 Sep, afr 265 heads 109cc, 10:1 compression. Currently have a air gap on it, wasn't sure if a single plane would be better like a VictorJr. My goal was to have 620HP. Saw a Motor trend article saying a very similar setup made 622HP...

recently had 12 bolt rebuilt with,, new gears and posi the seal leaked took it back to installer he put new seal in without a new crush sleeve ,would this be a problem?