TQ guys - sec jet mod
- Thread starter ratbastad
- Start date
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I’m not sure but 1/4-28 is a standard size. 1/4-32 is not as as far as I know. I’ve never seen or heard of a 1/4-32 tap.
Take a piece of scrap steel, 1/4 inch thick will do and drill #3 hole and tap 1/4-28. See if the jet screws in.
Take a piece of scrap steel, 1/4 inch thick will do and drill #3 hole and tap 1/4-28. See if the jet screws in.
From Holley themselves.
https://www.holley.com/products/fue...mponents/jets_metering_rods_bleeds/main_jets/
I’ll be dipped, going to have to look this up in machinery’s handbook. If you can even find a 1/4-32 tap,I imagine it won’t be cheap.
Anyway, mind sharing the source of these TQ mods?
Rat,
Haven't seen those mods before. What DOES work & is much easier is the sec mods under my name in Oct 23. PM if you want more info.
How good is it? 3900 lb [ without driver ] Pontiac 455, 3.31 axle T400, 850 Chrys TQ ran 11.7/119, 11.6/118, 11.5/117 mph at Eastern creek. Inexperienced driver & NO tuning done at the track. 850 rpm idle, factory power brakes.
Haven't seen those mods before. What DOES work & is much easier is the sec mods under my name in Oct 23. PM if you want more info.
How good is it? 3900 lb [ without driver ] Pontiac 455, 3.31 axle T400, 850 Chrys TQ ran 11.7/119, 11.6/118, 11.5/117 mph at Eastern creek. Inexperienced driver & NO tuning done at the track. 850 rpm idle, factory power brakes.
It's 1/4 32. I JUST tapped a main oil passage plug in a slant 6 to accept a Holley main jet.
Bewy I saw that post mate (good stuff) and have done that mod on another 800 TQ. Great number in the obese Injun too haha.
I think this SEC / Holley jet mod is done by the Super Stock guys. The mod the rear jet and emulsion tube / Hi speed air bleed to suit and also retap the PRI jet thread to Holley size to run the Holley jets.
On the PRI side after the jet mod they also lose the metering rods and tree and jet accordingly.
I'm surprised no one has tried this mod - guess I'm gonna be the lab rat to give it a crack haha.
I think this SEC / Holley jet mod is done by the Super Stock guys. The mod the rear jet and emulsion tube / Hi speed air bleed to suit and also retap the PRI jet thread to Holley size to run the Holley jets.
On the PRI side after the jet mod they also lose the metering rods and tree and jet accordingly.
I'm surprised no one has tried this mod - guess I'm gonna be the lab rat to give it a crack haha.
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You should document the progress of your modification experience and post it here on FABO. Alot of TQ fans here.
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