Motor question...what would you do? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

medicman775 · 03-31-2012, 10:20 PM

I need to make a motor decision soon. what would you chose between the 2 choices. I have a fairly built 454 w/aprox 425 to 450 hp...would be carburated till August when I can get a good deal on a FAST or Atomic efi system. The other option is to buy a 6.0 w/ZO6 cam w/aprox 375 hp. This would be a complete motor w/wiring, ecm thottle pedal, etc. I already have the 454. This is going into my 71 1ton burb, running 35" tires and t400 tranny. Need to decide very soon.

low'n slow · 04-01-2012, 12:17 AM

6.0 w/cam. Newer engines have much better fuel management than the older ones. The installation is almost plug and play now.

medicman775 · 04-01-2012, 12:29 AM

I'm just afraid of the lower horsepower for a big heavy rig.

jbclassix · 04-01-2012, 11:22 PM

hmmmm.... with the TH400 neither one will really get good mileage. I would stick with the BB. If you intend to drive it quite a bit a 4L80E would be a better investment than the 6.0L. But that is only my opinion.

67Sloburban · 04-02-2012, 01:53 PM

five words, Go Big or Go Home, jmo

medicman775 · 04-02-2012, 07:45 PM

Going with the 468 and either FAST or MSD Atomic efi.

Street Smart · 04-02-2012, 08:59 PM

You`ll have tons more torque with the B.B. With the big tires, weight and already own it, I`d go B.B.

**70cst** · 04-02-2012, 09:44 PM

BB plus you cant beat the sound of a BB

**57NAPCO** · 04-03-2012, 12:49 AM

I went this route, mark is one hell of an engine builder, he does EVERYTHING in house, nothing gets farmed out. I have no connection with him other than a happy customer

http://www.vortecproperformance.com/...binations.html
Posted via Mobile Device

medicman775 · 04-03-2012, 01:16 AM

I have seen his site and motors and if I didn't already have a 468 I would look into his motors for a big block option.

vectorit · 04-03-2012, 02:08 AM

454 will bring a bigger smile to your mug in the end.

medicman775 · 04-04-2012, 04:08 PM

I will be going with the built 468 I have and add the efi.

03-31-2012, 10:20 PM	#1
medicman775 Registered User Join Date: Nov 2011 Location: Sparks, Nv Posts: 152	Motor question...what would you do? I need to make a motor decision soon. what would you chose between the 2 choices. I have a fairly built 454 w/aprox 425 to 450 hp...would be carburated till August when I can get a good deal on a FAST or Atomic efi system. The other option is to buy a 6.0 w/ZO6 cam w/aprox 375 hp. This would be a complete motor w/wiring, ecm thottle pedal, etc. I already have the 454. This is going into my 71 1ton burb, running 35" tires and t400 tranny. Need to decide very soon.

04-01-2012, 12:17 AM	#2
low'n slow Too Dumb To Know Better Join Date: Nov 2005 Location: Texas Posts: 883	Re: Motor question...what would you do? 6.0 w/cam. Newer engines have much better fuel management than the older ones. The installation is almost plug and play now.

04-01-2012, 12:29 AM	#3
medicman775 Registered User Join Date: Nov 2011 Location: Sparks, Nv Posts: 152	Re: Motor question...what would you do? I'm just afraid of the lower horsepower for a big heavy rig.

04-01-2012, 11:22 PM	#4
jbclassix Junk Yartist Join Date: Jul 2009 Location: Greeley, CO Posts: 2,203	Re: Motor question...what would you do? hmmmm.... with the TH400 neither one will really get good mileage. I would stick with the BB. If you intend to drive it quite a bit a 4L80E would be a better investment than the 6.0L. But that is only my opinion. __________________ -Jeremy YOU ONLY FAIL IF YOU STOP TRYING 70 Crew Cab Build Link 70 GMC Suburban 4X4 build thread 95 Yukon Daily Driver Rebuilding an NP205

04-02-2012, 01:53 PM	#5
67Sloburban Registered User Join Date: Feb 2012 Location: clinton Posts: 42	Re: Motor question...what would you do? five words, Go Big or Go Home, jmo __________________ Nate 67 Chevy Suburban C20 : Project Sloburban 94 Dodge Dakota Sport: Daily Driver

04-02-2012, 07:45 PM	#6
medicman775 Registered User Join Date: Nov 2011 Location: Sparks, Nv Posts: 152	Re: Motor question...what would you do? Going with the 468 and either FAST or MSD Atomic efi.

04-02-2012, 08:59 PM	#7
Street Smart Registered User Join Date: Dec 2009 Location: Brooklyn N.Y. Posts: 819	Re: Motor question...what would you do? You`ll have tons more torque with the B.B. With the big tires, weight and already own it, I`d go B.B. __________________ 1967 GMC Suburban, Supercharged 6.2 LS with a 6l80e , my 11 second tow vehicle! pic in my profile 1987 GMC CrewCab Dually 6.0 LS/6L90e, new tow pig. http://67-72chevytrucks.com/gallery/...=74049&cat=500

04-02-2012, 09:44 PM	#8
70cst Senior Member Join Date: Feb 2001 Location: New Madison, Ohio Posts: 21,374	Re: Motor question...what would you do? BB plus you cant beat the sound of a BB __________________ A husband can be right...or...A husband can be happy. 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder!

04-03-2012, 12:49 AM	#9
57NAPCO F’B’D guy Join Date: Feb 2004 Location: Texas/Maine Posts: 2,237	Re: Motor question...what would you do? I went this route, mark is one hell of an engine builder, he does EVERYTHING in house, nothing gets farmed out. I have no connection with him other than a happy customer http://www.vortecproperformance.com/...binations.html Posted via Mobile Device

04-03-2012, 01:16 AM	#10
medicman775 Registered User Join Date: Nov 2011 Location: Sparks, Nv Posts: 152	Re: Motor question...what would you do? I have seen his site and motors and if I didn't already have a 468 I would look into his motors for a big block option.

04-03-2012, 02:08 AM	#11
vectorit What? Join Date: Jun 2007 Location: Southern California Posts: 7,617	Re: Motor question...what would you do? 454 will bring a bigger smile to your mug in the end. __________________ Chris 1968 K20 Suburban 1972 K10 LWB PU

04-04-2012, 04:08 PM	#12
medicman775 Registered User Join Date: Nov 2011 Location: Sparks, Nv Posts: 152	Re: Motor question...what would you do? I will be going with the built 468 I have and add the efi.



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