need help building my vortec sbc

NYSpeed Automotive
1

now tha the motor is in the car and running well, it’s time to up the ponies. I’m planning on heads and cam minimally, but if I need to do the carb and intake I’ll do that too.

right now the motor is fairly stock, other than the carb conversion. I’m running a Holley 600cfm carb.

Ideally I’d like to make close to 400 horse at the crank. but I have no idea what combo would be proper for a small budget.

I would like to stick with the vortec style head so I don’t need to buy a different intake, but if I can find something that works just as well in the older style have no objection.

anyone have some free advice they’d like to help me with?

---------- Post added at 05:54 PM ---------- Previous post was at 05:53 PM ----------

when I say small budget I mean under $1500-$2k

2

you already have vortec heads? if you want to keep it under $2k, use the heads you have if they’re vortecs.

3

yeah, heads are vortec. the motor came out of a '97 3/4 ton pickup. it is a 4 bolt main block.

my only concern is that I know the heads will need some machine work to be able to accept a more radical cam because I knoe they won’t accept much lift. I don’t remember exactly what the specs are anymore though.

4

Keep the heads and do the machine work to run a larger cam, .470 is the max for lift.

Dont spend too much,you can go carb/old school distributor on a LS1.

5

I have a complete build list for a sub 400hp SBC for Under $2k, the vortec heads were a 1/3 of the cost! Keep them. I’ll find the excel sheet I have. I’m building it for the miata

6

That’d be awesome schema. Thanks