Hi all. I am now an owner of a new rod project; well at least a 'rod' project to me. I purchased a rough looking '73 Datsun 240Z with a SBC V8 for $1200. Trying to get her sorted and I have a mountain of receipts/notes but this is my first American V8 experience since I owned a Mustang when I was 16 years old.
The worn out 600 CFM Holley is just not cutting it and I am in need of a new carb and am trying to figure out; A) what size carb I need? B) What kind of max RPM I should be running (this is a factor in terms of how many cfms my carb should be pushing)? C) What kind of power/power curve do you think I would be getting out of this thing?
Here are the specs taken from the receipts and notes that came with the car.
- LT1 4 bolt 350 block (3970010)
- Trickflow G2 Aluminum heads. Compression is either 10:1 or 12.5:1.
- 350/350hp cam, hydraulic lifter
- Keith Black Pistons (again either 10 or 12.5:1 compress)
- 6" H beam race rods
- Polished Steel crank
- Edelbrock intake
- Headers
- Flowmaster
- Stock ignition
- (And again) currently Holley 600cfm w/ KN air filter
Brought it by a shop that does some work on old Chevys and the owner recommended a 700-750 dual feed. That seems a bit large to me, but again I'm a novice when it comes American V8s and Holleys, my experience lies with Euro cars and Weber carbs. I would love to, and the ultimate goal is to, put 4 pairs of dual barrel Webers on there IF I can come across a kit for less than what I paid for the car, haha! The car itself weighs around 2200lbs and likely has a higher ratio rear-end so perhaps I can get away with something larger than typical. The car will see some steet and track driving.
So....? Any suggestions on carbs, what I should rev this thing to, idea on how ponies this thing may be turning?
The worn out 600 CFM Holley is just not cutting it and I am in need of a new carb and am trying to figure out; A) what size carb I need? B) What kind of max RPM I should be running (this is a factor in terms of how many cfms my carb should be pushing)? C) What kind of power/power curve do you think I would be getting out of this thing?
Here are the specs taken from the receipts and notes that came with the car.
- LT1 4 bolt 350 block (3970010)
- Trickflow G2 Aluminum heads. Compression is either 10:1 or 12.5:1.
- 350/350hp cam, hydraulic lifter
- Keith Black Pistons (again either 10 or 12.5:1 compress)
- 6" H beam race rods
- Polished Steel crank
- Edelbrock intake
- Headers
- Flowmaster
- Stock ignition
- (And again) currently Holley 600cfm w/ KN air filter
Brought it by a shop that does some work on old Chevys and the owner recommended a 700-750 dual feed. That seems a bit large to me, but again I'm a novice when it comes American V8s and Holleys, my experience lies with Euro cars and Weber carbs. I would love to, and the ultimate goal is to, put 4 pairs of dual barrel Webers on there IF I can come across a kit for less than what I paid for the car, haha! The car itself weighs around 2200lbs and likely has a higher ratio rear-end so perhaps I can get away with something larger than typical. The car will see some steet and track driving.
So....? Any suggestions on carbs, what I should rev this thing to, idea on how ponies this thing may be turning?