402 with itb's headed for the engine dyno-updated 700.1hp
10-25-2009, 08:52 PM
#22
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i dont have final numbers on my car yet since it's a back burner project. however it's a 383 with a 24x/25x @.50 106lsa cam, lingenfelter heads, 11.5:1SCR and the harromp intake of course. so far with just basic tuning and very little timing (maybe a little over 10 deg) and it made 400hp at 5krpm. it's on e-85 too so once we get it ready for WOT pulls we're going to crank it up and spin it to 7krpm if not more. it's really up to the tuner because my theory is spin it till the curve starts going down.
heres some pics of my set up and some for referance for you guys to see what you're working with as far as space.
then the rough cut after. it really frees up a ton of room. but i also dont have the facility to make a nice air box either
heres some pics of my set up and some for referance for you guys to see what you're working with as far as space.
then the rough cut after. it really frees up a ton of room. but i also dont have the facility to make a nice air box either
10-25-2009, 09:35 PM
#23
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i dont have final numbers on my car yet since it's a back burner project. however it's a 383 with a 24x/25x @.50 106lsa cam, lingenfelter heads, 11.5:1SCR and the harromp intake of course. so far with just basic tuning and very little timing (maybe a little over 10 deg) and it made 400hp at 5krpm. it's on e-85 too so once we get it ready for WOT pulls we're going to crank it up and spin it to 7krpm if not more. it's really up to the tuner because my theory is spin it till the curve starts going down.
heres some pics of my set up and some for referance for you guys to see what you're working with as far as space.
then the rough cut after. it really frees up a ton of room. but i also dont have the facility to make a nice air box either
heres some pics of my set up and some for referance for you guys to see what you're working with as far as space.
then the rough cut after. it really frees up a ton of room. but i also dont have the facility to make a nice air box either
Lookin' good Ron!
Shawn, excited for them results sir!
Do either of you feel that getting rid of the "trays" that the trumpets are welded to will affect anything?
10-25-2009, 10:38 PM
#24
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i dont. as long as the lip is still there it shouldnt be any diffrent than any other ITB that has the stacks seperated. i did it because it makes everything easier like removing the stack to replace injectors, coils packs, adjusting valvetrain, etc.
10-25-2009, 11:36 PM
#25
Looks like a pretty good rough cut. How are you going to attach a airbox to it now? I would certainly guarantee without the proper airbox its not going to make as much power as it could. Even though its a different setup, I tested running just an open throttlebody (without air tube/box attached) and I lost 16rwhp. I'm betting its going to be a similar deal with yours, leave a little bit of power on the table without the proper setup. I would think relocating the coils and building an airbox for both sides with a bridge to the middle would be a good idea for an airbox.
10-26-2009, 10:37 PM
#28
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Looks like a pretty good rough cut. How are you going to attach a airbox to it now? I would certainly guarantee without the proper airbox its not going to make as much power as it could. Even though its a different setup, I tested running just an open throttlebody (without air tube/box attached) and I lost 16rwhp. I'm betting its going to be a similar deal with yours, leave a little bit of power on the table without the proper setup. I would think relocating the coils and building an airbox for both sides with a bridge to the middle would be a good idea for an airbox.
the filter i'm using is very similer to this one
10-26-2009, 10:48 PM
#29
i found a guy that makes a screen type filter system for it. it just snugly attaches it's self to the end. just from the baseline tuning with and with out the screen filters theres little to no differance in performance. maybe during WOT but we havnt got to that point yet.
the filter i'm using is very similer to this one
the filter i'm using is very similer to this one
10-27-2009, 05:55 PM
#31
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Thats what I'm saying, without the proper airbox the air won't pick up good velocity before it enters the stacks. You won't notice a difference between those filters attached vs not. If you were to have a nice air box with a large volume of filtered air available to those ITB's then the velocity of the air entereing the stacks would increase. If I remember correctly, I've also seen a thread somewhere where someone lost a good amount of power on those Harrop intakes because they took the airbox they had for it off. Needless to say, after their test, they put the airboxes back on.
10-27-2009, 07:07 PM
#32
the airbox that came with the harrop intake flat out sucks. i dont see any reason on why you would want to add a plenum on a ITB setup other than it's easier to do a filter system. especially in a f-body where room is very very limited. if someone had a way to do it and make it work thats cool. me on the other hand want no part in that because it's just to much **** to deal with when i already dont have room with out a air box. the only way that intake will get a air box is if it turned into a twin turbo motor like that 69 camaro at sema last year motiv8or or whatever it's called.
10-27-2009, 08:49 PM
#34
the airbox that came with the harrop intake flat out sucks. i dont see any reason on why you would want to add a plenum on a ITB setup other than it's easier to do a filter system. especially in a f-body where room is very very limited. if someone had a way to do it and make it work thats cool. me on the other hand want no part in that because it's just to much **** to deal with when i already dont have room with out a air box. the only way that intake will get a air box is if it turned into a twin turbo motor like that 69 camaro at sema last year motiv8or or whatever it's called.
Sounds easier said then done, I know...but that would be the cats *** for F-Body intakes.
.
10-27-2009, 11:17 PM
#36
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i'd like to see how these guys do it. when i saw it, it just made more sense to have separate velocity stacks when it came to room and working on the car. i have zero clue how to put that intake on or take it off the car with out dropping the motor. plus we'll have to agree to disagree because i dont see how making a plenum for a itb intake is going to be any better than separate filters.
10-29-2009, 05:24 PM
#38
i'd like to see how these guys do it. when i saw it, it just made more sense to have separate velocity stacks when it came to room and working on the car. i have zero clue how to put that intake on or take it off the car with out dropping the motor. plus we'll have to agree to disagree because i dont see how making a plenum for a itb intake is going to be any better than separate filters.
