92gtafr205

just got this car dynoed last week. 342 dnd motorsports comk hawk 205 afr heads with 80cc exhaust ports running a 80mm holley thottle body, 42lbs injectors, 90mm lighting mass air, erson coustom grind soild roller cam, 238 240@.50 598 600 lift edelbrock rpm 2 ported to heads an thottle body on the motor with 45lbs fuel press 18 timming put down 441rwhp max rpm was 7000 still making power,so some ppl say these heads are to big for the 347 guess its the parts you use very happy with numbers

ctgreddy

dang those are impressive numbers and i never heard of a 342??
looks like my whp goal isnt that far out of reach then.

92gtafr205

dnd just dont bore there blocks thats why is a 342 look at there site dndmotorsports.com

67mustang302

It depends on the rpm range you want the engine to run in as well. For a street 347 where someone wants torque without having to turn much rpm, then smaller heads and cam are a better choice. Larger heads and cam would be more prefered for a full race application. There is such a thing as too big a head, even though some people don't think so. Remember the Boss 302? It sucked on the street, too big a head, too big a cam, not enough engine. Only made power in rpm ranges that were beyond reliable street driving levels. Who is honestly going to cruise around at 5,000rpm all the time? There's also such a thing as too small a head as well. AFR 165's on a full race 347 is senseless, and so are AFR 225's on a stock cammed 302. It all comes down to gearing, rpm range, how the car is used etc.

92gtafr205

true but this is a street driven car. pulls like hell from 3000rpm an up. and i fast street car i would think most ppl would spin there motor to 7000rpm if there not useing stock block

67mustang302

Again, it depends on the application. A stock cam in a 347 would be a waste with big heads. If you have the gear and the cam, then yeah, use the head, but there's no sense in going bigger than you need since all that does is decrease port velocity.

And yeah, a 342 is just a 347 with a stock 4.000" bore

92gtafr205

very true

mjr46

a 342 is basically a 347 without the .030 overbore.........man that's a monster you got there!!!! good numbers

stang8689

sick numbers

jtmustang

has it been to the track yet ?