well what is he doing ? has a gear has the cr piston ? so ?? two cams only to pick threw ? never did get any info on were the piston is in the hole or out or real head chamber cc .3000 stall no you do not need that much you not going to find one thats is going to be right on the money the stalls cheap ones can get close. it is not like your going to be slipping so bad it will not roll to 3000rpms .i have 4000/4500 stalls on the street for many years they work fine the car moves way before 4500 and is just not slipping so bad it can not move till then. but you will have to deal with added heat as they slip some not that you feel it . i only drive around town. for over 20 years i done it . i use Coan. tell them what i am doing they build very good converters they know what there doing so it can be done. done it many times.you could get away abit less stall . is this a 20 mile and out to town and back home ? if so the cam the stall and cr is fine if your going to drive it all over you may want to rethink the build pistons domes can be cut some to drop cr then a smaller can like 550/550 and 222/230 on a 110 lsa then you can used all most a stock stall . your first parts list i build 30 engines much like this and can work . but if your not wanting to deal with some things and trade off s of that build then swap out the pistons to a flat top piston then use the 500/500 224/224 115 marine cam take out there about $40./75 bucks i used many of this cam for lower buck roller cam builds. they have a good sound to them and build power it low rpm . a good intake with headers will make a easly 375 to 400 hp then you can drive it any were and use pump gas