Can a 670 tbi support this?

 

Yea it should. Tha would put you at about 350 or so crank HP. That can be done with the 670. You may want to break down your combo or do a search for the limits of the 670/454 TBI units.

 

Ok, this is what I'm thinking. A 350 block with either Trick Flow cnc heads or AFR 180's; a performer tbi manifold bored to 2inch (even thinking of having it extrude honed); Lunati cam 215/218 dur 489/503 lift 115 lobe sep; headers and a 2 inch tbi.

I want everthing to bolt up and keep emissions in tack, so how does this sound?

Lunnati says the cam should be able to support 350-370 hp. The heads are where the power is and I've read that the smaller intake on the AFR's will flow just as well as the larger ones on the Trick Flows but produce better torque.

If a decent hp level cant be obtained with tbi, I'm thinking go LT1, but tbi is simple, wont be as expensive and I already have the cam and intake.

 

with those heads and cam, the intake **might** hold you back, i would think a descent single plane would be the ticket for this, and then port match the intake to the CNC runners on the AFR heads. i would tell you to run a bit more cam, but since you already have it, run with it, it should give you pretty good midrange power.

 

What cam would you recommend? I'd really like to have a little lope as well.

 

with a 115 LSA , it will have no lope, it will be very smoot, and have good lineir midrange power.

well, i guess before i say this, i should get more info. i *assumed* this was on a 350, if it is on something else, let me know.

The hot-cam is a proven performer, a little more duration, and a slightly tighter lsa (114)

i would say something in the 222-226 intake, and 228-232 exaust, duration on either a 112, or 114 (the 112 will have more 'lope', but a little harder to tune)

all of this is assuming that you have the ability to tune the chip, none of these combos are going to even idle right, without custom tuning.

 

i am hopeing the 454 TB will support 320HP or 255 HP to wheels. installing in spring along with 226/235 @ .05 in spring. my 210/216 only hit 222 rear wheel HP(268 TQ) at 5100 rpms. dont think that cam will meet your needs. eprom tuning of course.