experts: converted brodix 18x on LT1
Banned
Joined: May 2003
Posts: 6,661
From: LA (lower Alabama)
Re: experts: converted brodix 18x on LT1
Ask MG about his TORQUE to go along with his 760-780FWHP. Bet it's in the HIGH 6's maybe low 7's.
OBW what ya gonna do with THAT much torque on the street without 17 x 33's. 400RWHP is uncontrolable on the street without DR's anyway.
I know--- ya can put a 2.50 gear in it with a glide with a 1.76 first gear.
Ya could get a set of 227's or convert a set of Pro Action heads and have ALL ya want. Except for a trailer queen or ya are MG(MG got toy's) 600FWHP and 550 ft lbs of torque from a 383 will get the job done on the street. After ya learn how to drive that,put a 300 shot of hose on it and really run up the tire bill. This can be done under 7000RPM's with Noooo problem.
That much torque will pull your 30'ChrisCraft anywhere.
OBW what ya gonna do with THAT much torque on the street without 17 x 33's. 400RWHP is uncontrolable on the street without DR's anyway.
I know--- ya can put a 2.50 gear in it with a glide with a 1.76 first gear.
Ya could get a set of 227's or convert a set of Pro Action heads and have ALL ya want. Except for a trailer queen or ya are MG(MG got toy's) 600FWHP and 550 ft lbs of torque from a 383 will get the job done on the street. After ya learn how to drive that,put a 300 shot of hose on it and really run up the tire bill. This can be done under 7000RPM's with Noooo problem.
That much torque will pull your 30'ChrisCraft anywhere.
Thread Starter
Registered User
Joined: Jun 2001
Posts: 1,192
From: Hinesville, GA
Re: experts: converted brodix 18x on LT1
True. Good points. I'm not looking for so much torque that I can burn out on the interstate...and I am looking 'outside the box' for solutions to things I would like to improve on (IRS and 400+ci for example). Like I said, for the most part I spend 95+% of my driving time down low in the powerband, so when I replace my intake and bump up the compression (it's at 10:1 right now 
), I'll put in a smaller cam too to compliment the SR.
For the 18X heads, I think I'll wait until I get a bigger engine in there than the 383. I'd love to put the 18 degree heads on it now, but dont have the time or money to go with a single plane, and the reduction in cam, SR, and increase in compression should take care of the low end problem. I'll probably put in a set of 3.73's from the 3.42's, but since I have an M28 T-56 I'm not trying to go too low on the gearing either.
I like what I see in the 18X's because of the price, 23* compatability and specs on the heads (not being outrageous or racey). Anything I'm not seeing here?
), I'll put in a smaller cam too to compliment the SR.For the 18X heads, I think I'll wait until I get a bigger engine in there than the 383. I'd love to put the 18 degree heads on it now, but dont have the time or money to go with a single plane, and the reduction in cam, SR, and increase in compression should take care of the low end problem. I'll probably put in a set of 3.73's from the 3.42's, but since I have an M28 T-56 I'm not trying to go too low on the gearing either.
I like what I see in the 18X's because of the price, 23* compatability and specs on the heads (not being outrageous or racey). Anything I'm not seeing here?
Banned
Joined: May 2003
Posts: 6,661
From: LA (lower Alabama)
Re: experts: converted brodix 18x on LT1
Originally Posted by dhirocz
True. Good points. I'm not looking for so much torque that I can burn out on the interstate...and I am looking 'outside the box' for solutions to things I would like to improve on (IRS and 400+ci for example). Like I said, for the most part I spend 95+% of my driving time down low in the powerband, so when I replace my intake and bump up the compression (it's at 10:1 right now ), I'll put in a smaller cam too to compliment the SR.
For the 18X heads, I think I'll wait until I get a bigger engine in there than the 383. I'd love to put the 18 degree heads on it now, but dont have the time or money to go with a single plane, and the reduction in cam, SR, and increase in compression should take care of the low end problem. I'll probably put in a set of 3.73's from the 3.42's, but since I have an M28 T-56 I'm not trying to go too low on the gearing either.
I like what I see in the 18X's because of the price, 23* compatability and specs on the heads (not being outrageous or racey). Anything I'm not seeing here?
), I'll put in a smaller cam too to compliment the SR.For the 18X heads, I think I'll wait until I get a bigger engine in there than the 383. I'd love to put the 18 degree heads on it now, but dont have the time or money to go with a single plane, and the reduction in cam, SR, and increase in compression should take care of the low end problem. I'll probably put in a set of 3.73's from the 3.42's, but since I have an M28 T-56 I'm not trying to go too low on the gearing either.
I like what I see in the 18X's because of the price, 23* compatability and specs on the heads (not being outrageous or racey). Anything I'm not seeing here?
A set of Pro Actions can flow in the 330/340 range. Convert them and ya GOT 600fwhp IF the rest of the engine is done right.
They will cost ya about $3200.00 ported and sprung up and ya "could" run an LT4 intake (not the best ,but).A set of offset shaft rockers and a good mechanical roller with Crower or Isky pressure oiled lifters with no offset will get the job done.
Put some hose on top of that and--- well it would be fast and pretty driveable.Ya wouldn't want to go to California in it but it would be fine for short trips.
Registered User
Joined: Jul 2001
Posts: 752
From: Double Oak TX
Re: experts: converted brodix 18x on LT1
Originally Posted by airflowdevelop
.
So, My question is how are we winning all of these races when we are not moving? Horsepower is the measurement of rotational torque .. per say. The freak magazine editors have so much of the population brainwashed into creating new definitions for words that have been around long before cars!
Good Luck
So, My question is how are we winning all of these races when we are not moving? Horsepower is the measurement of rotational torque .. per say. The freak magazine editors have so much of the population brainwashed into creating new definitions for words that have been around long before cars!
Good Luck
In my mind anyway (subject to change) it all about gearing, converters and average hp within the intended rpm range. Gearing multiplies torque.
Registered User
Joined: Oct 2002
Posts: 2,931
From: Upstate NY
Re: experts: converted brodix 18x on LT1
Originally Posted by Denny McLain
This torque vs hp stuff has been around for years. To settle this in my mind, I went to web pages of professional engine builders/racers like Reheer Morrison looking for dyno sheets and also studied dyno sheets of cars that I know that for some reason are particularly fast for their combo or peak hp rating.
In my mind anyway (subject to change) it's all about gearing, converters and average hp within the intended rpm range. Gearing multiplies torque....
In my mind anyway (subject to change) it's all about gearing, converters and average hp within the intended rpm range. Gearing multiplies torque....
Your mind is right, DM.
Registered User
Joined: Nov 2001
Posts: 2,985
From: In a house by the bay
Re: experts: converted brodix 18x on LT1
I've never built a max effort street car that I thought needed more "low end torque". However, I do know a number of people who have a problem with too much. They have to be very creative with the throttle to accelerate quickly on a ~12" wide radial tire. 
And forget launching from a dead stop cause it isn't going to happen unless you're in Fast & the Furious dimension, where cars wheelie with no burnout AND spin the rear tires.
Cruising around at 2k rpm... it's no problem getting into the sweet-spot. That's what they made downshifting for.
A SR and an 18 degree head would be the perfect example of a mismatched combination if ever there was one. Put a single plane on there (preferably a model with enough plenum volume for your big cid) and go have fun.
-Mindgame
And forget launching from a dead stop cause it isn't going to happen unless you're in Fast & the Furious dimension, where cars wheelie with no burnout AND spin the rear tires.
Cruising around at 2k rpm... it's no problem getting into the sweet-spot. That's what they made downshifting for.
A SR and an 18 degree head would be the perfect example of a mismatched combination if ever there was one. Put a single plane on there (preferably a model with enough plenum volume for your big cid) and go have fun.
-Mindgame
Registered User
Joined: Apr 2002
Posts: 908
Re: experts: converted brodix 18x on LT1
Thread
Thread Starter
Forum
Replies
Last Post
smacz28
Drag Racing Technique
7
Aug 6, 2002 01:51 PM