| Re: 350 vs 400 mains |
Subject: Re: 350 vs 400 mains by rklessdriver on 2014/1/19 20:16:44 Quote:
Yes. Our latemodel dirt engines use 350 mains and the common IRL/Quad 4 rod journal which is 1.850.... these engines use 3.8 to 4 strokes... make almost 900hp and turn 8900rpm for 50 to 150 lap races... run all season before refresh and the cranks last 3 yrs. Rods last 1 year. We build limited latemodles with 283 mains and honda rod journals. These make 600hp with flat top pistons and flat tappet cams. 3.3 to 3.5 stroke. 7800-8200rpm motors. Cranks and rods last forvever. The only place we have run larger journals is in a Pro Charged Outlaw 10.5 engine. BBF Boss Hemi. Makes over 3,000hp and has run 6.30s over 220mph in the 1/4mile. Even there we didnt do anything special. Stock BBF mains and common BBC rods. Most of the time we run the smallest journal we can. Alot of classes these days are limited on min journal dia. Will |
