future 340 build, HP/TQ guesses

[streetdak]

Well in about a year and a half (after the ol' lady gets out of nursing school) ill be starting my 340 build. Looking for consistant low 11's or even high 10's but maybe not off the start.

Now yell if yall have any suggestions, i'm a big fan of out the hole torque, and more concerned of 60ft times that 1/4 times/speed.

Overall goal is to build a minitub or backhalf bracket car, streetable is not an issue.

so here's what i have and what i will be getting, what do you pro/guys think it might make?

73 340 .30 over.
Speed Pro Forged Pistons
Stock Shot Peened rods - (may change to some h beams cause i need to buy a crank)
4340 Steel Crank (stock stroke)
(shortblock will be assembled and balanced)
308 Swirl Port heads. 2.02/1.60's - fully ported and decked to get a CR about 11.5:1
Air Gap intake, port matched
1 7/8 TTI headers
solid roller Comp Cam 248/254 with 576/582 lift
1.6 shaft mount roller rockers
Holley 750 carb
MSD pro billet dist
7AL Ignition
Electric waterpump and fan

any guesses. trying to see if i need to change my plan

 

[jerry6]

You should be making well OVER 400 HP 400 torque
60 ft times , get 4:56 gears My Ramcharger with 2 speed transfer case in low gear with 650 HP 440 had crazy 60 ft times nothing could touch it , but topped out at 80 mph , got there in 8 seconds
My build
1970 340 .30 over

10.5:1 Mahle forged ceramic coated pistons

Forged crank , all balanced decked the works

Heads 2.02 1.60 ported ccd

cam 226/234 .494/513

750 edy carb Air Gap intake

Hedman short tube headers now , tested with Hooker SS comp headers

Electronic ign orange box reworked dist

High volume oil pump

Stock water pump

3:73 gears with posi (clutch type )

727 with shift kit 2000 stall converter , need 2500-2800 for better launch , thast and slicks , car fries the tires through 1st and 2nd gears .

Have yet to get a good time best 13.6 but have to let off gas or feather the pedal until I can get traction
Dyno 412 HP 400 torque 355 HP , 343 TQ at the rear wheels

Good luck with your buils

 

[streetdak]

awesome, thanks jerry! What was your trap speed ar 13.6?

 

[jerry6]

102.67 , just wish I had cheater slicks . Frst time I went to the track I had no posi , it was like I was on ice . Posi helped , but slicks or cheater slicks are needed big time !n
Seems best thing to do is stroke the thing , cubes will up the HP and torque .