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any of the smaller isky mega cams would work.like the old 270 mega cut on a 106 lsa. 270* 221 @ 50 .465 lift 106 or 108 lsa.it would have a nice chop to the idle and probably run decent as well.

im with the idea of running a smaller cam,if it is mostly a street car.id rather have something with better "manners" street diving,and give up a little max et/mph at the track.but thats me.that being said id look at the old isky 280 mega.

id run the stock replacement hi comp pistons and the crane 278hmv or 278 powermax hyd cam.this cam has great manners and a powerband like a table top.specs are as follows : 278/290 duration 467/494 lift 114 lsa. crane lists the "basic rpm range" for the older hmv version at 2200-5800.i have...

rob,if you give jerry at schneider racing cams the spec he can make one for you at a fair price,if he already dont have one sitting around to copy.but ive never seen one off the shelf lol.i had the 340 auto cam in a warmed up 318.it ran ok,but not as well as i would have liked.i ended up...

bigger carb like a 750 would help.and ill throw in my 2 cents....isky 284 mega 284* 236@50 .505 lift 106 or 108 lsa. or schneider cams 284 solid...284* 240@50 .510 lift .014 lash 110 lsa.

i would not trust any of the listed specs.ive had a 280/474 purple cam profiled in front of me and its a fair amount different than whats listed.id also be willing to bet that the duration @50 numbers are more like 210*/220* for the cam you have,rather than 228*/235*.the intake centerline is...

so,instead of making a suggestion ,perhaps i should be asking................... what is the rpm range you are shooting for? and what is your primary usage?

ive heard it in person, run a few isky grinds myself.i probably should have posted a video running through exhaust.if you look at the other grind i mentioned in my first post look at the dur@ 50 numbers and lsa.they are very similar to the wiplash cam.ive also heard a 280 mega cut on a 106 lsa...

ill agree with you the lope is more noticeable with open headers ,but that grind also has a nice chop to it through full exhaust. if im not mistaken the op has true dual 3" with race bullets .id consider that on the open side.

i know its not a mopar,but you get the idea.......

trust me the 280 mega lopes plenty good,and you can order a custom version cut on a 106 lsa if you want more chop.Isky 280 Dart Powered 347 - from the other end..... - YouTube

isky 274/284 mega 226/236 @50 .490/.505 lift 107 lsa.... or just a straight up 280 mega 280/232@50 .485 lift 108 lsa. both of these grinds are not as "fast" of a lobe as what you have listed ,but they should make good streetable power with a moderate lope.

ive also run the summit cam thats listed in a low comp 318 4bbl.its not a bad grind,but still would not be my first choice for a stock 273.rather than save a few bucks on something that works ok,spend a few bucks more on a custom grind that will give you exactly what you want and be happier in...

thats identical specs to a comp 260 h.i ran one in a mild 318.it would not be my first choice if an rv/mileage cam is what you are after in a stock 273.id honestly go smaller like an isky 256 super cam 256/202@ .50 .425 lift.

what is your vac reading at idle in gear?id select a pv 2 numbers below your lowest vac reading.ive been through all this with the tunnel ram on my 340.ive got 10.5" of vac in gear and i run an 8.5 pv.stock jetting on a 390 cfm holley is 51s.im running 53s.you established it was lean,but it can...

what he said and ill add......when you say 60 nozzles i assume you mean jets.going from 54s to 60s is a big jump.try 56 jets first to see if that helps.

check your float level.pay close attention to the rear bowls.also,how do your plugs look?

what kind of ignition system are you running? 2 things come to mind........fuel starvation or ignition breaking down.if your running a stock ignition system that could be a problem at high rpm.

i have that same cam on the shelf (new). it only lists the duration @ 50, but i wanted to know the "seat to seat" duration so i had jerry at schneider racing cams profile it.that cam has a ton of advertised duration... 292*....and a late intake closing point.the same cam is in my old speed pro...

the old generic 214/224 @50 443/465 112 lsa cam works real well.when my 340 first went in the dart thats the cam i had.good vac,mpg,slight lope at idle,and lots of torque over a broad range.

half correct.the wrong tunnel ram with two 600 cfm carbs ,stock stall, and a crappy tune will be a dog.but a t-ram with a small plenum , long thin runners,and small carbs runs great on the street.yes its all in the tuning.

edelbrock street tunnel ram,and top it with 390 cfm holleys.

thats a stock 340 cam for sure.look at the listed duration @ 50......210/220.

x2, ive seen one profiled at schneider racing cams right in front of me.it was like 210/221 @50.it was the stock 340 cam that i ran in a mild 318.i replaced with a short duration narrow lsa isky super cam which ran much better in my combo.the 340 cam had longer legs,but the isky was way more...

before the 340 in my dart i had a 318.ported j heads with 202/160s,old domed forged slugs,headman headers,custom schneider racing cam 284* .500 lift 108 lsa.DLI modified m1 intake and 750 cfm carb.366hp.@ 6000.the cam was on the big side for what i was doing at the time, it was like a light...

before the 340 in my dart i had a 318.ported j heads with 202/160s,old domed forged slugs,headman headers,custom schneider racing cam 284* .500 lift 108 lsa.DLI modified m1 intake and 750 cfm carb.366hp.@ 6000.the cam was on the big side for what i was doing at the time, it was like a light...

x3,it needs alot more initial.with a 4 speed an 3.55 gears it should have plenty of power.i dont think that the cam itself is to blame.id start from the beginning,verify firing order,initial timing,carb adjustment,etc.maybe event try a "Proven good carb".if it cant be solved by basic tuning id...

lokar.

if you had a small block ram it would not be difficult for me to "modify" the top.

interesting idea.......