silentvoice19

Ok with my new job cam new part otions. So i snagged a stock stroke crank
http://store.summitracing.com/partde...p;autoview=sku
and some stock length eagle rods. Id like to throw a fairly hefty shot 200 i was windering what rpm i could spin all of this to on and off of the nitrous. BTW the pistons a forged probe pistons that are 30 over. I was gonna go with a 393 and a smaller shot 150 but im not sure on the exact limits of the block lol. This is a 351w BTW its a 1975 and up block.

mjr46

your better off doing a stroker the stock block will handle the stroker 351 kit just fine and a 393 built with good aluminum heads like a set of 205 afr's and a single plane intake and roller cam conversion would easily have you running low 11's with all supporting mods of course...I honestly wouldn't spend all that money on aftermarket stoke stroke components for a 351

silentvoice19

ok Im curious y roller conversion any major benefit to justify me spending 400$? I have heard other wise.I have a good set of 205cc flowin heads thats not an issue lol.Also id like to maby break a mid 10 if i can with nitrous.Can i pull a 393 stroker and nitrous?????

mjr46

you build the 393 right and you won't need NO2........roller conversion = less friction and allows the valvetrain to rev quicker and due to recent changes in oil additives / removal of ZZDP......flat tappet cam failures have become more prevalant expecially with heavier spring pressures that performance cams require....some don't have an issue others do.. I don't have an issue in my 66 flat tappet motor with a performance cam but then again I add BG MOA every oil change

silentvoice19

goddamnt well that pisses me off

mjr46

I wouldn't worry some don't have a prob..I however had a prob once as a result in a previous motor...... the number exhaust and intake lobes rounded right off and put metal all through the engine = toasted new motor and it had 1500 miles on it...since switch to roller set up = no probs and like I said in my other flat tappet motor added bg moa and no probs...google zddp znd see what comes up

silentvoice19

whats bg moa? Also with the 393 what would my rev limit be. Also y cant i have nitrous? lol {little kid}

mjr46

you can have Nitrous..BG moa is an oil additive...replaces what has been removed..rev potential will depend on cam chouice and valvetrain choosen....but 6500 shouldn't be a prob with right combo of parts

silentvoice19

lol ok ill look into it ive talked to a friend of mine that porting my heads and hes told me he'l put the stuff on there to easy rev 6500 actually. Funny you both said that.Should i bump compression to 9:5.1 or go 8:5.1 region because of the nitrous. I know if i bump the comp and run the no2 ill have to more than likely use race fuel.

mjr46

either way with NO2 I'd run race gas and back timing off depending on the shot of NO2 and if it'll be a 150 shot at that point 4 degrees timing should be pulled and 1 step colder on the plug is a good idea.......detonation is your enemy so take all necessary precautions to avoid it