inline six beefy engine!

[TJ's Chevy]

Originally Posted by Sharps40

No one is making tri-y for inline sixes any more....Clifford used to and several mfgrs thru jc whitney in the old days. But I keep coming back to Langdons cast iron headers with the heat coating......I can y pipe at the right spot and get a similar impact....just gotta figure where. I think not more than about 3 feet back....somewhere near the cab front I think.

But don't knock it.....up to 25 horse on a 155 horse engine is a huge percentage.....I'd spect that's only with cam and intake mods though. 10 or so horses is prolly more realistic. Good news is if you want the absolute best idle and daily driveability nothing beats the stock inline 6 cams that are already in the engine....every other cam moves torque and power further up the rpm range where you be using it less and less often unless yer on the drag strip. I'll be keeping my stock cam and the goal is to make the power and torque in the useable band from 1500 to 3500 rpm.

I was told by several guys that when you add headers and a 4 barrel carb you can get a hp increase of Up to 20-25 hp...the torque...Maybe 10-15 foot pounds....that's why you don't feel a major increase in power...it takes torque to move an automobile...the stock torque rang on a 6 is 1000-2300 rpm..almost like a cummins. When I installed the big edelbrock and headers on my 292 something changed the torque curve, cause now it has torque from off idle-just about 3000 rpm. The cam I am going to use is .518 lift and peaks torque at 3300 rpm...now if I installed a richmond 6 speed then I wouldn't need to rev the motor to 4000 rpm between shifts like I do with the ol 4 speed. But I am going to completely hotrod the engine....It'll be making 330+ torque when done. The stock cam provides .401 lift and 188 duration @.50. I want something that will cruise, but will also take on a 350...and if built right they will do both.

[Sharps40]

Originally Posted by NEWFISHER

My Langdon's come together with a 2 1/2 "Y" at 20" behind each collector and continue 2 1/2 through a Magnaflow 2 1/2 chambered and 2 1/2 out .

Pics? Sounds like what I want.

[Sharps40]

Originally Posted by T.J. MCCAULEY

I was told by several guys that when you add headers and a 4 barrel carb you can get a hp increase of Up to 20-25 hp...the torque...Maybe 10-15 foot pounds....that's why you don't feel a major increase in power...it takes torque to move an automobile...the stock torque rang on a 6 is 1000-2300 rpm..almost like a cummins. When I installed the big edelbrock and headers on my 292 something changed the torque curve, cause now it has torque from off idle-just about 3000 rpm. The cam I am going to use is .518 lift and peaks torque at 3300 rpm...now if I installed a richmond 6 speed then I wouldn't need to rev the motor to 4000 rpm between shifts like I do with the ol 4 speed. But I am going to completely hotrod the engine....It'll be making 330+ torque when done. The stock cam provides .401 lift and 188 duration @.50. I want something that will cruise, but will also take on a 350...and if built right they will do both.

Yep. I thinglk were agreein-headers and carbs help but needs more guts to max out the flow benefits.

[datguy]

Originally Posted by T.J. MCCAULEY

I was told by several guys that when you add headers and a 4 barrel carb you can get a hp increase of Up to 20-25 hp...the torque...Maybe 10-15 foot pounds....that's why you don't feel a major increase in power...it takes torque to move an automobile...the stock torque rang on a 6 is 1000-2300 rpm..almost like a cummins. When I installed the big edelbrock and headers on my 292 something changed the torque curve, cause now it has torque from off idle-just about 3000 rpm. The cam I am going to use is .518 lift and peaks torque at 3300 rpm...now if I installed a richmond 6 speed then I wouldn't need to rev the motor to 4000 rpm between shifts like I do with the ol 4 speed. But I am going to completely hotrod the engine....It'll be making 330+ torque when done. The stock cam provides .401 lift and 188 duration @.50. I want something that will cruise, but will also take on a 350...and if built right they will do both.

exactly what i want to do, have a cruising engine that will take on a 350? any special list of parts to have my engine to these specs?

[TJ's Chevy]

Originally Posted by datguy

exactly what i want to do, have a cruising engine that will take on a 350? any special list of parts to have my engine to these specs?

Well...the easiest way would be to bolt on a turbo at 8 pounds of boost. Rebuild it to stock specs...bolt on a clifford intake and a turbo exhaust manifold...then an 8 psi turbo and you'll have killer power at the low end. You can turbo a stock 6 cylinder because you have 7 mains and their bottom end is strong. Just don't rev to to high. lol. Here is what I am doing with mine: We'll start with the block...30 over bore, decked, balanced, crank shaft balanced and turned, Clifford 264 duration cam .518 lift 110 lobe sep 4 degrees advanced at grind, .30 over .150 dish propane pistons for more compression. Now the head: Head bolts bosses will be cut out and T6G2 Lumps will be installed, 1.94 intake and 1.60 exhaust valves will be installed..head will be polished as well. The HEI I am going to use will be a Speedmaster HEI..like a stock GM hei but with a 65K coil and capable to 7,000 rpm. Carb will be a 600 or 750 Edelbrock, and intake and exhaust will remain the clifford intake and headers. When all is said and done we should be putting at least 320 ft pounds torque and 315 Hp at the flywheel....And I will be using a richmond 6 speed trans for the 5 direct gears and 6th gear overdrive.

[TJ's Chevy]

Originally Posted by datguy

exactly what i want to do, have a cruising engine that will take on a 350? any special list of parts to have my engine to these specs?

You might want to listen to this video...this is a 250 with an offenhouser intake....hooker long tube header(no linger available)...Holley 2 barrel carb and a Davis Unified Igntion HEI...Clifford 270 cam .525 lift. Head is off a 194....lumps and I'll let him explain the rest of it. lol...but this car is a great cruising car..but will take on a V8 as well.

You Tube

[64chevtruck]

Originally Posted by datguy

anyone hear know what to put on an inline 250 to make it sound like a good beefy engine. dont really care how much hp the engine puts out i just want it to have a good exhaust sound for now!

Hi, dual exhaust with straight pipes is my favorite,.