jh57
Pit Crew
Posts: 9
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exhaust
Jul 29, 2015 16:44:52 GMT -6
Post by jh57 on Jul 29, 2015 16:44:52 GMT -6
my motor is a 350 bored 40 over, vortec heads , flat top pistons , stock stroke,500 cfm holley 2 bbl , cast iron 2bbl intake,cam solid lift ,510 lift intake,, 520 exhaust ,, headers schoenfeld 195 ,1 5/8 tube diameter 3" collector . gear is 633 with a3 speed saginaw ,, 3/8 mile dirt .My question is about how I should run the exhaust ! I know some suggest running headers into a y pipe then out the side ,, this is supposed to give you good torque ! Im open to suggestions ! This is my first car , Im trying to keep it simple to remove and replace and not lose torque . Also have durability.Thanks !
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exhaust
Jul 29, 2015 22:01:13 GMT -6
Post by flipflopoo1oo on Jul 29, 2015 22:01:13 GMT -6
If the stock type manifold with built in exhaust cross over , it helps to balance tune! The thing is if not in a frigid climate the heat of the fuel is a horse power killer by the loss of compression of expansion in the blast! Duals with a mid way balance tube on the headers is a great thing to do and block the heat from under the carb! Lower temps of engines require more fuel the same way a cool intake air does! All in the name of horses and torque! Getting the complete system to freeze intake gases is most profitable when talking cheap power by expanding the fuel's ranges of burn as with IGN upgrades to speed it along to matching octane in fuels to the burn timing in use of correct stroke angles! Run a few searches on free horses and get a better Idea to designing them instead of trying to buy another hundred or so missed in the past by normal conventional measures!
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jh57
Pit Crew
Posts: 9
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exhaust
Jul 30, 2015 6:26:46 GMT -6
Post by jh57 on Jul 30, 2015 6:26:46 GMT -6
I have a lifter valley baffle in place in the motor ! Also a !" aluminum spacer between carb and cast intake . Im running the 2bbl cast iron intake , to keep with the rules .Im not sure what you mean by midwat balance tube ? Thanks for your suggestions !
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exhaust
Jul 30, 2015 19:42:54 GMT -6
Post by flipflopoo1oo on Jul 30, 2015 19:42:54 GMT -6
If referring to a 180 design it stagers the burn order of the tubes to create a spin of the exhaust to create velocity and better scavenging to lessen reversion! A 110 Lobe separation helps too! The 110 also lets you keep intake closer to desired numbers to make vacuum--(torque)-- and hold exhaust numbers for horses! A wider pulling range if needed too to let you run more gear! Playing with a cams profile by changing push rod length and rocker angles or ratio plus clearance settings will make or break a tune and the need to retune the exhaust again!!
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jh57
Pit Crew
Posts: 9
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exhaust
Aug 1, 2015 16:37:48 GMT -6
Post by jh57 on Aug 1, 2015 16:37:48 GMT -6
Im using a 50,000 volt coil , hei distributer , I do plan on running 100 octane or better .On the cam L/C 106 intake C/L 102 exhaust C/L 110 ( Jones cam designs )did the cam recommendation . 1.5 Stainless steel roller rockers , 1.5 ratio according rules . The motor run good , just broke in I haven't been able to really test out yet ! No frost on the intake yet ! Thank for all the info !!
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exhaust
Jan 11, 2016 3:06:41 GMT -6
Post by engineperformances on Jan 11, 2016 3:06:41 GMT -6
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