Got a friend who wants me to to help his car gain a little giddy up... they've destroyed the original l05 tbi system, going from a 305 to 350 and runs terrible, He has given up, and wanting me to help him got carbed...

plan A:
retain stock bottom end and cam, add:
L31 vortecs
Air gap intake
600 holley vac sec..
stock HEI..
and headers

hp/tq?

Plan B:
retain L05 heads/bottom end, add:
Crane zcam: 113501- .432/.459" 206/218 @.050
Air Gap intake
600 holley
stock HEI
and header

hp/tq?

OR plan C:
l31's and cam swap all with others...

If im not mistaking, these stock made 200hp/and 300tq??
looking for the 380tq and approx 260 hp or so??

 

if no one gets it by then I play with it tomarrow after I get up, be for work 3-4 pm cal time.

 

A stock LO5 HEI won't work with a carb.

Stock cam or stock heads are going to hold back any combo you come up with. Why are you even considering keeping either?

Why a vacuum secondary carb? And why so small?

What Air Gap intake?

 

eldedbrock RPM Air gap,
its actually going into a Z71 pick up....
this topic prob get deleted now..
as far as stock hei, i mean non computer controlled hei...

 

As long as what you're asking can be applied to what people would do to a 3rd gen, we'll let the discussion continue.

With that cam (and your application ), a Performer intake would be the better choice.

And, if you couldn't tell already, I'd suggest "Plan C".