How can i make my inline 6 faster... - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Will67 · 01-27-2003, 06:44 PM

Well thanks for all the help...i really want to just give my motor a little more powerr..i dont mean totally rebuild it...theres an intake manifold that comes with a 4bbl carb..for 219 dollars in jcwhitney..and then some new headers...maybe that would do the trick

weasel29gm · 01-27-2003, 06:44 PM

How about 2 more plugs !!!!!!!!!! J/ k try to find info on Clifford Reserch, they sell alot of 6 cyl performance parts.

crazy longhorn · 01-27-2003, 07:09 PM

Will67, go for a small 4brl(390cfm Holley), & for the best "bang " on the headers, go 3/3 split(2 collectors). i did help little bro set up a 232 AMC for his Gremlin.......040 over, balanced, shaved the deck, & head,282 Isky cam, Offey intake/390 Holley, hooker header 3/3 split......backed by a toploader Ford 4spd, & an 8" ford rear! Did that gremlin run like stink?.......hell yes! It sounded real nice too.......im just glad it wasnt my money!......crazyL

PICKMUP · 01-27-2003, 08:41 PM

If it will help, here is a Clifford intake that has never been bolted on. I will sell it for $125. That should be about half price.

Will67 · 01-27-2003, 08:45 PM

Thanks..will this bolt right on..i wont have to make any modifications or anything...oh and will it take a 4bbl carb?..that probably sounds like a dumb question but i cant tell..lol..

PICKMUP · 01-27-2003, 08:52 PM

Will67---if you haven't done much custom work, then you probably should stay away from the aftermarket intakes and other parts. You have to make this stuff work. A lot of the engineering has already been done by companies like Clifford and Holley for the 390 carb, but you still have to make it fit. I just thought this might be a savings---IF---you are going to upgrade your engine...WARNING: It is not real easy the first time. It is kind of fun, though.

Will67 · 01-27-2003, 08:54 PM

Thanks for the advice but...i am only 15 and id rather learn this stuff now than later...and like u said it is fun!!...

Will67 · 01-27-2003, 10:03 PM

Is there an online store that i can get the holley 390cfm at...and will that bolt on to the intake that pickmup posted?..thanks

PICKMUP · 01-28-2003, 12:51 PM

Will67,
I offered the intake to you first, but I have someone else that wants to buy it, if you don't. Please just let me know what you would like to do.

Will67 · 01-28-2003, 06:19 PM

Pickmup..just go ahead and sell it..im not sure on what i wanna do yet..thanks though

Fred T · 01-28-2003, 10:11 PM

Once again, get Santucci's book. It will answer all these questions. I would latch onto that intake, but don't mess with the 390. Put on a 500 cfm, either Holley or Edelbrock. I don't know how much headers cost for the 250, you can also look at getting your exhaust manifold split, which gives you dual exhaust. Here's an outfit that does excellent work. http://www.inliners.org/Advertisers/kkk_ad1.html

RainDog · 01-28-2003, 10:48 PM

So, will switching to dual exhaust on a single-manifold engine like a 250 actually do anything for performance, or is it more of a "look" thing?

RainDog

Will67 · 01-28-2003, 10:49 PM

I was just asking myself the same thing....

stelth2002 · 01-28-2003, 11:02 PM

YES they will make as much of a difference as it will to any other engine. You have to start somewhere. If you can get the long tube headers as they will give you a flatter longer torque curve!!!

Will67 · 01-28-2003, 11:04 PM

Ok i agree i think i will just get a v8..will a 350 bb just drop right into my truck..i wont have to make very many modifications?..

01-27-2003, 06:44 PM	#27
weasel29gm SLOW BUT SURE,BUT CLOSER Join Date: Feb 2002 Location: eleanor wv usa Posts: 3,103	How about 2 more plugs !!!!!!!!!! J/ k try to find info on Clifford Reserch, they sell alot of 6 cyl performance parts. __________________ 69 C-10, OWNED 38YRS... 350 over 30, 350 Turbo, 3:73 Posi P/S, P/B Black with red and black int. ''LOVE THESE OLD ''TRUCKS.......

01-27-2003, 07:09 PM	#28
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,402	Will67, go for a small 4brl(390cfm Holley), & for the best "bang " on the headers, go 3/3 split(2 collectors). i did help little bro set up a 232 AMC for his Gremlin.......040 over, balanced, shaved the deck, & head,282 Isky cam, Offey intake/390 Holley, hooker header 3/3 split......backed by a toploader Ford 4spd, & an 8" ford rear! Did that gremlin run like stink?.......hell yes! It sounded real nice too.......im just glad it wasnt my money!......crazyL __________________ 69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....

01-27-2003, 08:41 PM	#29
PICKMUP "Trucks with Class" Join Date: Jul 2000 Location: OLYMPIA, WA, USA Posts: 8,168	HERE'S A START! If it will help, here is a Clifford intake that has never been bolted on. I will sell it for $125. That should be about half price. Attached Images __________________ Email: frankeham@comcast.net Phone: 360-956-7170

01-27-2003, 08:52 PM	#31
PICKMUP "Trucks with Class" Join Date: Jul 2000 Location: OLYMPIA, WA, USA Posts: 8,168	Will67---if you haven't done much custom work, then you probably should stay away from the aftermarket intakes and other parts. You have to make this stuff work. A lot of the engineering has already been done by companies like Clifford and Holley for the 390 carb, but you still have to make it fit. I just thought this might be a savings---IF---you are going to upgrade your engine...WARNING: It is not real easy the first time. It is kind of fun, though. __________________ Email: frankeham@comcast.net Phone: 360-956-7170

01-28-2003, 12:51 PM	#34
PICKMUP "Trucks with Class" Join Date: Jul 2000 Location: OLYMPIA, WA, USA Posts: 8,168	Will67, I offered the intake to you first, but I have someone else that wants to buy it, if you don't. Please just let me know what you would like to do. __________________ Email: frankeham@comcast.net Phone: 360-956-7170

01-27-2003, 06:44 PM	#26
Will67 Registered User Join Date: Jan 2003 Location: Lebanon MO Posts: 57	Well thanks for all the help...i really want to just give my motor a little more powerr..i dont mean totally rebuild it...theres an intake manifold that comes with a 4bbl carb..for 219 dollars in jcwhitney..and then some new headers...maybe that would do the trick

01-27-2003, 08:45 PM	#30
Will67 Registered User Join Date: Jan 2003 Location: Lebanon MO Posts: 57	Thanks..will this bolt right on..i wont have to make any modifications or anything...oh and will it take a 4bbl carb?..that probably sounds like a dumb question but i cant tell..lol..

01-27-2003, 08:54 PM	#32
Will67 Registered User Join Date: Jan 2003 Location: Lebanon MO Posts: 57	Thanks for the advice but...i am only 15 and id rather learn this stuff now than later...and like u said it is fun!!...

01-27-2003, 10:03 PM	#33
Will67 Registered User Join Date: Jan 2003 Location: Lebanon MO Posts: 57	Is there an online store that i can get the holley 390cfm at...and will that bolt on to the intake that pickmup posted?..thanks

01-28-2003, 06:19 PM	#35
Will67 Registered User Join Date: Jan 2003 Location: Lebanon MO Posts: 57	Pickmup..just go ahead and sell it..im not sure on what i wanna do yet..thanks though

01-28-2003, 10:11 PM	#36
Fred T Cantankerous Geezer Join Date: Aug 2002 Location: Bel Aire, KS Posts: 6,264	Once again, get Santucci's book. It will answer all these questions. I would latch onto that intake, but don't mess with the 390. Put on a 500 cfm, either Holley or Edelbrock. I don't know how much headers cost for the 250, you can also look at getting your exhaust manifold split, which gives you dual exhaust. Here's an outfit that does excellent work. http://www.inliners.org/Advertisers/kkk_ad1.html __________________ Fred There is no such thing as too much cam...just not enough engine.

01-28-2003, 10:48 PM	#37
RainDog Registered User Join Date: Mar 2001 Location: Burien, WA, USA Posts: 391	So, will switching to dual exhaust on a single-manifold engine like a 250 actually do anything for performance, or is it more of a "look" thing? RainDog __________________ "Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin slitting throats."

01-28-2003, 10:49 PM	#38
Will67 Registered User Join Date: Jan 2003 Location: Lebanon MO Posts: 57	I was just asking myself the same thing....

01-28-2003, 11:02 PM	#39
stelth2002 Young Gun wth Fast Inline Join Date: Jan 2002 Location: Idaho Posts: 1,475	YES they will make as much of a difference as it will to any other engine. You have to start somewhere. If you can get the long tube headers as they will give you a flatter longer torque curve!!! __________________ 1967 Chevrolet LWB with built 292! 415 ft. lbs of torque, 4 speed :O with 27% overdrive too, 3.73 Posi. Frame and body done... getting painted!!!

01-28-2003, 11:04 PM	#40
Will67 Registered User Join Date: Jan 2003 Location: Lebanon MO Posts: 57	Ok i agree i think i will just get a v8..will a 350 bb just drop right into my truck..i wont have to make very many modifications?..



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