Anybody running ITB/ Stacks on there LS

[1970 CST Short Wide]

Anyone running individual throttle body’s / Stacks on there LS.

[1970 CST Short Wide]

Nobody?? Anybody know anything about running Stacks ???

[WorldsCrappiestTruck]

Originally Posted by 1970 CST Short Wide

Nobody?? Anybody know anything about running Stacks ???

I guess other than them looking fairly cool, I don’t see the upside. You’ll lose your MAF so you’d have to change to speed density tuning, you’d lose an air filter, and the stock GM ugly plastic intakes are plenty sufficient. There are plenty of videos out there with dyno pulls showing how good the stock GM truck intake is - often times better than some of the pretty aftermarket sheet metal intakes. It’s just butt ugly, and honestly the HP / TQ difference is only numbers - nothing you’d likely notice in seat-of-the-pants conditions.

If you’re after cool looking & different….have at it.

[LS short box]

I think they look very cool. But and you know the but was coming I would really be concerned about tech support and some one who can tune it.
I would ask the same question over on LS1tech.com.

[1970 CST Short Wide]

Originally Posted by LS short box

I think they look very cool before But and you know the but was coming I would really be concerned about tech support and some one who can tune it.
I would ask the same question over on LS1tech.com.

I’m looking for a local tuner that can do the job before I buy anything. I’m Old School and think they look Cool. Something I always wanted to do and I haven’t seen anybody doing Stacks on an LS at any of the local shows.
I should have done it back when I had the BB in the Truck

[1970 CST Short Wide]

Ok. So I talked to my Tuner and he said No Problem, He’s done a few. Sooooo
I ordered from Redux Racing in Australia. They showed up today and after mock up assembly the Manifolds are going for Gloss Black Powder then On They Go
At 71 years of age this is like a Bucket List item for Me. Can’t wait to get the on. Will post more as i Progress in

[theastronaut]

Originally Posted by WorldsCrappiestTruck

I guess other than them looking fairly cool, I don’t see the upside. You’ll lose your MAF so you’d have to change to speed density tuning, you’d lose an air filter, and the stock GM ugly plastic intakes are plenty sufficient. There are plenty of videos out there with dyno pulls showing how good the stock GM truck intake is - often times better than some of the pretty aftermarket sheet metal intakes. It’s just butt ugly, and honestly the HP / TQ difference is only numbers - nothing you’d likely notice in seat-of-the-pants conditions.

If you’re after cool looking & different….have at it.

Individual runner intakes eliminate the problems that big cams cause- reversion during overlap at low rpm pumping back into the intake plenum which screws up the air/fuel charge for the next cylinder's intake stroke- that's why big cams chop, it's a misfire caused by reversion havoc on the air/fuel ratio in the plenum.

On my VWs I have run quad Dellorto carbs on individual runners to get one barrel per cylinder and they idle dead smooth even with 300*+ adv duration cams, and pull hard from idle. That exact same cam with a plenum intake would chop hard and had no power off idle until rpm was high enough that the intake charge had enough momentum to overcome reversion. The difference in driveability and lower rpm torque in normal driving is huge, and the throttle response is unmatched by anything else. On a revision of one of my VW engines, I actually went with an even bigger cam, bigger carbs, and heads with bigger ports/valves to take away some of the low rpm tq and response so it would be easier to drive smoothly around town, it had too much throttle response before. Size the throttle bodies adequately and they make just as much power at upper rpm as anything else on a street engine.



I'm collecting parts to run Webers on an individual runner intake for my '66 now, and have a pair of sidedraft Dellortos on my autocross car. Once you experience them you want them on everything.