So the LTX intake runner is about 3.5", how long are the runners on the Holley?

Just for the sake of simplicity, take a bolt-on LT1 with a mild cam (like the hotcam or CC305) and dyno it. Then throw this intake on top.....what would it do/ how would it affect the hp/tq curves? Raise the peaks? Move them further up in the rpm range? Broaden the curves out?

 

Or maybe an Eaton?
http://web.camaross.com/forums/showt...hreadid=122109

http://web.camaross.com/forums/showt...g+intake+eaton

 

It would give you alot more midrange TQ and if it flowed better give you more HP. It's hard to say unless I looked at it. That's my best guess now.


Dave,

#7 is not going to have the charge go up the port when the valve is open, and that's the only time when the injector is firing, in a well setup system.

Bret

 

I am certainly not an expert on this, but it seems to me that the air charge would more toward 5 when it opened, then once 7 opened it would go back toward 7 like it should, but it may be lazy from reversing its inertia like that...? mabye I'm over estimating the amount of charge that #5 would take....

 

ok, finally have some pics of this up:

on the left, a standard ported LT4 intake.

on the right, a welded intake. the cross section is MUCH more consistant, and although the roof line is still not perfect, it is MUCH closer to what you would get from a Hogan, etc. not a stupid "ski jump" like the stocker

http://www.musserracing.com/heads/intake/raceport2.jpg

 

This winter you'll probably be getting my intake. The other intake pics on your site look even better.

 

How would firing order change effect the crankshaft?? I haven't seen any comments on that. If #5 & #7 were the only problem,,...you could probably leave those unmodified right? SStroker, I'd be interested in collaborating on the Holley modifications. Contact me.

 

Jordan,

Have you performed any back-to-back dyno tests on this intake? What did you gain and at what rpm? Engine details would be nice also. Just curious.

Thanks,

Daren

 

This is a great discussion. How much HP & lbs/ft will be gained from this effort? Just wondering about the return on investment.

Thanks

 

Gump,
The only dyno number I have are on my motor, but they weren't back to back.

I had a motor with 12.5:1 that made 451rwhp.

I then added this intake, and lowered the compression to 12.0:1 (both changes at once)

and made 471.

So even with the drop of compression, I still made more power. HOWEVER, there was at least a month inbetween these 2 dyno sessions, and they were at different shops. both dynojets tho.

This was on a 7k rpm 401ci motor.

Your results may vary, but this is what I 'got. As I get more data, I will share

I know mike lict(of modern muscle car) was claiming they had a big blower car that picked up 30rwhp.

 

Thanks Jordan.

I am in the process of converting my Stocker to run Top Stock. LT1 to LT4, unported heads/intake to ported heads/intake. I have read your posts with great interrest. I hope that the modifications that I have made to my intake will help a lot.
On the heads I am limited to 205 CC's, which allows for only limited porting. As you can tell, a lot rests with the intake.
My LT1 (350 ci) made a little over 400 RWHP with factory blueprinted heads (no porting) and bone stock intake, 48mm throttle body. So, I have high hopes for my Top Stock motor.

Again, thanks for the reply,

Daren

 

Gotta love Drag Racing motors. It's always cool to see what you guys can do with a motor. The tricks aren't the best thing for long life and street cars but a stock headed LT1 making 400rwhp is impressive.

Bret

 

- My LT1 (350 ci) made a little over 400 RWHP with factory blueprinted heads (no porting) and bone stock intake, 48mm throttle body. So, I have high hopes for my Top Stock motor.-

how is that possible?!

 

My C/SA motor made that number with factory crank, rods, and OEM .030 over pistons. The biggest change within the motor is the cam. I am limited to factory lift, but duration is not checked. I am also limited to factory stamped rockers. The motor is also within a couple of thousands on all critticle measurements.
The chassis and drivetrain were also assembled for optimum efficiency.
I will be at the IHRA race at Budds Creek MD at the end of this month. Come by and see me. My Camaro is bright red with "Ta-Dink!" on the doors.

Best Regards,

Daren Poole-Adams
IHRA 9043

 

heh thats pretty cool dude! some people struggle to make 400 at the wheels with there strokers/ported heads big cam etc. id love to find out some secrets! im gonna try to make it to budds creek!

rick

oh btw whats she run?