raposak

Hello all, New here. I'm in the process of freshening up a LQ9 to put it in my 66 Lemans convertible. I want to go with a carb to keep that old school look. I have the following specs i'm considering. Please let me know if you see anything wrong with this setup. This is just a cruiser so not looking for anything crazy and like everyone, trying to do this on a tight budget. Might do upgrades in the future if money is available.

02 lq9
cam: 228/230 .571/.573 112
https://www.summitracing.com/parts/cca-cl54-428-11
keeping 317 heads and replacing springs
Holley 300-130bk intake
https://www.summitracing.com/parts/hly-300-130bk
carb: summit m2008
https://www.summitracing.com/parts/s...50vs/overview/

msd controller
TH400 trans
torque converter (undecided)

As for the carb, is it better to go with a vacuum or mechanical secondaries?

LQ4BU

A vacuum secondary carb is typically more street friendly, but not sure if the mpg would really be that much better depending on your driving style.

Doug G

Agree...VS carb better for street.
I know at 60-65mph (3300rpm) my secondarys are starting to open; enough so you can hear them. At that point mpg is going down quick.

raposak

Great thanks. Looks like VS is it. What about the specs of the other items?

LQ4BU

The other items all look good

speedtigger

iTrader: (16)

For me, it would depend on the stall converter. I don't like vacuum secondary carburetors on anything over a 2800 stall converter. They just don't work well together in my experience.

Other than that, I would love to put you in a Cam Motion brand camshaft and lifters. Here are two good potential combos:

1.) Cam Motion Titan II Camshaft (221/226 .595"/.586"), 2500-3000 stall, dual plane intake (like the Holley you have listed) & a Vacuum secondary 750 cfm Holley.

2.) Cam Motion Titan 4 Camshaft (227/232 .612"/.595"), 3000-3500 stall, dual plane intake (like the Holley you have listed) & a Mechanical Secondary 750 cfm Holley.