I changed from a 90deg elbow/ 90mm throttle body to a 4500 Fast throttle body and went to dyno to see the difference. Keep in mind this is in a truck. Before it made 512hp through th400/ 9 inch . This time it made 562hp, not too bad for a truck. It picked up a little on spray also. Not to bad for a 4 year old motor. Motor spec: iron block 408 11.5cr, All pro LS1 heads, Futral S/R cam, Vic Jr intake.

 

Beast Mode ...do you have any work done to the all pros?

 

That's a significant gain. Congrats. Quick question...Where did you end up putting the IAT sensor?

 

I was wondering how much power they were worth as I will be swapping down the road to that combo on my Nova build.


I noticed you had that on at the arm drop race. Truck ran good.

 

that's a very nice gain

great power !

 

Intake elbows and 90mm TBs suck on single planes. Nice gains. Thanks for posting!

 

Which elbow do you have?

I run this setup now. I had the edlebrock elbow on the motor before and i gained 90RWHP switching to this elbow.

 

Wow thats a hell of a gain man!

 

Is that typical? I have a Intake elbows.com sheetmetal elbow and a 1300 cfm monoblade on my LT1, would it gain anything going to one of these?

 

Yep.

This is why I went Wilson elbow and 90mm. The bend on the IE.com stuff just doenst keep up with a tighter curved peice.

 

This guy said he made more power with the sheetmetal setup over a setup like yours. Now Im confused.

What I really want to know is a 4 hole setup better than either of the elbow setups?

 

Here is my old elbow. The iat is mounted on the windsheild cowl.

 

i dont think you can beat the 4 barrel TB, there is no restriction with that setup. i was going to run that TB but i wanted to be able to street drive the car, and finding a air filter was an issue and also driveability was going to be sacrificed.

 

The 4 hole TB has the best driveability over any other TB.

Air filter is easy, put a carb style hat on it and run 3.5 inch tube to a MAF then to an air filter. Or in my case to my WS6 ram air air filter setup.

See here

https://ls1tech.com/forums/drag-raci...car-motor.html

 

i really like the idea of the 4 barrel carb TB and carb hat going to the factory style MAF or airfilter. should easily clear a stock cowl and hood even with a plate kit under it

 

Where do you find the carb hat and tubing? I looked on summit and got nothing in the search for it.

I may swap to a 4 barrel style TB after the first of the year. A few of the vendors told me that for a NA setup it's the only way to go! They told me that i should pick up a solid 20rwhp over my edelbrock elbow. Not disclaiming some of the gains but none of these shops are seeing the gains that are being claimed?? Could be due to different setups or are some people using the ultra low style elbows?

Also what is the height comparrison at the top of the 4 barrel style TB compared to the highest point of the elbow? I have a sunoco hood so i think the 4 barrel style might set lower than my low profile edelbrock elbow?

 

Tell them you want a hat for a blow through carb with a turbo or supercharger.


I would use aluminum tubing. If you have an LS1 use a rubber 45* to connect to your lid on one end then put the MAF in the other end. Get a 45* aluminum bend with a short radius and long feet along with some rubber couplers. Hook it up.

Or use 2 45* rubber couplers like I did, would look similar to my setup.



Should fit easily under a Sunoco hood.

 

user dlove went from from stock l76 intake and 92mm tb to this and didnt gain anything in the 1/4! Ran same time

 

I went from this edlebrock elbow



to this elbow and gained 90rwhp. Nothing else was changed. same dyno and roughly 2 weeks apart.

 

krazy who's elbow is that?