327 or 377 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

shortbed70 · 04-25-2002, 09:30 PM

I do alot of highway driving but also alot of in town play I want to build a motor to hold up on the high side of 5000rpm maybe 6 but I want to accelerate out of the hole to. I've got a 70 SWB 3.73 with th350 manual valve body and slap stick B&M special. Run on pump gas and get ok milage.

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1970 shortbed(project)
350/350 dropped 4/6 21/2" flowmasters. Dropping bigblock idea and building a stout smallblock...

Longhorn Man · 04-25-2002, 09:33 PM

You need lots of torque to launch this heavy brick outa the hole. i would go with a 383 or a 400.
I have a 400 I lan to build upp one day...onless I can get my grubby mits on a 500 Caddy.

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'69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man
I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it.
FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite.
If you need a pic posted, E-mail me at longhornmail@yahoo.com
Andy, in Columbus Ohio

69 longhorn · 04-25-2002, 10:07 PM

I think so too,383 or 406. Im runnin a 383 with edelbrock rpm top(alittle less cam for tork),CompXE 268. Its got plenty to get the old longhorn movin,but you can pull a little more with a 406(bigger bores will let it breath better). You wont have a problem winding either 1 6000 plus ,if built properly. I try to shift around 6000,but have seen it go 7200(brain fade....I need to pay attention!)........69 longhorn.

04-25-2002, 09:30 PM	#1
shortbed70 Registered User Join Date: Mar 2002 Location: Forney TX Posts: 4,512	327 or 377 I do alot of highway driving but also alot of in town play I want to build a motor to hold up on the high side of 5000rpm maybe 6 but I want to accelerate out of the hole to. I've got a 70 SWB 3.73 with th350 manual valve body and slap stick B&M special. Run on pump gas and get ok milage. ------------------ 1970 shortbed(project) 350/350 dropped 4/6 21/2" flowmasters. Dropping bigblock idea and building a stout smallblock... __________________ Troy 1965 Chevy Bagged,361 sbc,voodoo cam,1.5 full roller rockers,patriot 185cc vortec heads 2.02-1.60,vortec weiand polished intake,demon carb my truckhttp://67-72chevytrucks.com/vboard/s...d.php?t=332884 Big Red Dog build http://67-72chevytrucks.com/vboard/s...d.php?t=572274

04-25-2002, 10:07 PM	#3
69 longhorn Registered User Join Date: Aug 2001 Location: rock island,il,usa Posts: 5,382	I think so too,383 or 406. Im runnin a 383 with edelbrock rpm top(alittle less cam for tork),CompXE 268. Its got plenty to get the old longhorn movin,but you can pull a little more with a 406(bigger bores will let it breath better). You wont have a problem winding either 1 6000 plus ,if built properly. I try to shift around 6000,but have seen it go 7200(brain fade....I need to pay attention!)........69 longhorn. __________________ http://community.webshots.com/user/hotrodhorn

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04-25-2002, 09:33 PM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	You need lots of torque to launch this heavy brick outa the hole. i would go with a 383 or a 400. I have a 400 I lan to build upp one day...onless I can get my grubby mits on a 500 Caddy. ------------------ '69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it. FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite. If you need a pic posted, E-mail me at longhornmail@yahoo.com Andy, in Columbus Ohio



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