Zoomies

May 12, 2022, 10:24 PM

smokinjeff

Zoomies

Has anyone with the baby blower switched headers to zoomies ? Any differences ? I’m currently looking for some laid back dragster zoomies so I thought I would ask if anyone had experience changing them. Thanks

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May 13, 2022, 07:16 AM

I Hate Dragsters

picked up about .05-.07 surprisingly. The weight alone over a set of chrome headers was significant.

May 13, 2022, 07:50 AM

Curly1

quote:
Originally posted by I Hate Dragsters:
picked up about .05-.07 surprisingly. The weight alone over a set of chrome headers was significant.

That does surprise me. I do not like Zoomies especially with a front engine car but I have several sets may try them some day.

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May 13, 2022, 08:04 AM

I Hate Dragsters

yeah....i don't exactly enjoy the idling sound of a boat...but apparently it sounds fine going down track

May 13, 2022, 09:46 AM

Thurston

That's a significant improvement. Is that in the 1/4 or the 1/8 ?

quote:
Originally posted by I Hate Dragsters:
picked up about .05-.07 surprisingly. The weight alone over a set of chrome headers was significant.

May 13, 2022, 10:30 AM

I Hate Dragsters

in the weather conditions i raced it last it should have ran about 4.49....first pass with the zoomies it went 4.42

following weeks i changed to a larger pulley to try to slow it down some and went 4.42 with a header tune that had been a fastest of 4.50

however that run it decided to blow up too sooo...lol

May 13, 2022, 12:22 PM

smokinjeff

Wow I was thinking maybe no gain at all. I wanted something to not stir the dirt up like my downsweeps do at dirt and grass pits. Looks like Chris is going to fix me up. Much appreciated and I will try and do a back to back comparison if I don’t run out of tow fuel money. Funny but not funny. I appreciate the reply’s and Thanks for everyone’s time.

May 13, 2022, 12:38 PM

seabass

Definitely a gain on boosted stuff, helps with torque off the line as well

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May 13, 2022, 01:29 PM

TD3550

My 2.5" zoomies from Teds come in at 10 Lbs each.
The up swings i have come in at 38 Lbs each. Diff of 56 Lbs just in exhaust weight. Good amount..
Conventional head BBC... Hey Chris.. Want to buy a set??? lol

May 15, 2022, 08:12 AM

wideopen231

Thanks, but I have three sets for Hemi and building a set of bbc right now For Jeff.

Thank those are lite wait till I get set I have been thinking about for while and decide to give a try. They are 12 lbs lighter than zoomies that are on the car now.

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May 16, 2022, 10:11 PM

Nitrous1

Didn't pick up anything going from 2.125 stepped to 2.25" with a 4.5" collector to 2.5" zoomies.

May 17, 2022, 05:53 AM

Holytown

What is the weight difference on a door car?

I would assume it can't be much, due to the length the tubes would need to be to get outside the body.

But I do hear a lot of pro mod cars going to them simply because they help keep the nose planted at the top end with the Thrust.

May 18, 2022, 09:04 AM

wideopen231

quote:
Originally posted by Nitrous1:
Didn't pick up anything going from 2.125 stepped to 2.25" with a 4.5" collector to 2.5" zoomies.

carbs or injection. Carbs don't seem to pickup. My thought is because how carb works and dependence on air velocity thru it in relation to exhaust. Either back pressure or collectors scavenging effect.