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#1 |
Aluminum slot wheels rule...
Join Date: Jan 2006
Location: Maine
Posts: 6,212
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GMC V6 fellers
I know there's a few of you guys on the board with 305 and 351 V6's in your pick-ups. And IIRC I said I'd do a report about the Holley 500 as soon as we got the truck going, but I can't remember.
Anyway, the Holley 500 works flawless on my V6. I usually don't use fancy words like that, but in this case I will. It will rev up a lot faster, accelerate a lot quicker, and have a lot more power. With the old Stromberg, you could tap the pedal, and the truck would go. Just kinda putt along. But with the Holley, it's a whole other story. If you tap the gas, now the whole truck will rocket right off (for a truck engine, anyway). The other side of it, is that it's pretty much a bolt on ordeal. The Rochester 2bbl-Holley 2bbl adapter is idiot proof, since it only works one way you bolt it on. (wonder how I know that ![]() Carb-$250 Air-cleaner-$30 carb adapter-$20 choke cable-$10 Air cleaner spacer-$5 |
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#2 |
Senior Member
![]() Join Date: Aug 2005
Location: Los Angeles
Posts: 1,333
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Re: GMC V6 fellers
Good to know because I just bought one for my 351E. For the record, you have to make an adapter to install a Holley on a 351E due to the odd bolt pattern the larger Stromberg's had. You didn't have to change the jetting or power valve at all?
__________________
1967 GMC CM-2500 Camper Cruiser, 351E V-6, NP 435 4 speed, Dana 60, and factory A/C. 2012 GMC K-3500 WT regular cab, 6.0L Vortec, 6L90. |
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#3 |
Registered User
Join Date: Apr 2003
Location: Central PA....In the Berg of Nisbet
Posts: 790
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Re: GMC V6 fellers
Whatcha doing with the old Carb? I wouldn't mind having a parts source for mine.
__________________
'72 K-20 EFI'ed 250 Inline/4spd stake body, Farm Truck '71 C-20 Cummins Diesel Powered, In storage thanks to $5.00 diesel! '69 3500 GMC 305V-6/4spd, Still under reconstruction.......... Inlines Rule! 6 soldiers standing is better than 8 laying down!!!!!!!! |
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#4 | |
Aluminum slot wheels rule...
Join Date: Jan 2006
Location: Maine
Posts: 6,212
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Re: GMC V6 fellers
Quote:
TP, I still have the Stromjunk but I'm keeping it for my own parts stash. I'm keeping everything original that I take off the truck. Seems like a good idea to me. If your Stromjunk is truely junk, I'd throw a Holley 2bbl on and enjoy the power. Guys like you that actually work your trucks pretty hard would love it. Trust me. |
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#5 | |
Registered User
Join Date: Apr 2003
Location: Central PA....In the Berg of Nisbet
Posts: 790
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Re: GMC V6 fellers
Quote:
__________________
'72 K-20 EFI'ed 250 Inline/4spd stake body, Farm Truck '71 C-20 Cummins Diesel Powered, In storage thanks to $5.00 diesel! '69 3500 GMC 305V-6/4spd, Still under reconstruction.......... Inlines Rule! 6 soldiers standing is better than 8 laying down!!!!!!!! |
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#6 | |
I have a radical idea!
Join Date: Jan 2005
Location: Sweet Home Alabama!
Posts: 6,513
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Re: GMC V6 fellers
Quote:
__________________
'67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435 ‘72 C-10 SWB , 350 4bbl, TH350 '69 C-10 SWB , 250 L6, 3 OTT '69 GMC C3500, dump truck, 351 V6, NP435 '84 M1009 CUCV Military Blazer 67 C-30 Turbodiesel build thread http://67-72chevytrucks.com/vboard/s...d.php?t=254096 My trucks http://s226.photobucket.com/albums/d...ediafilter=all Member of the 1-Ton Club! |
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#7 |
Senior Member
![]() Join Date: Aug 2005
Location: Los Angeles
Posts: 1,333
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Re: GMC V6 fellers
Yes, I think a 351E manifold is the same as a 'Magnum'. BTW- you guys know GMC was using the 'Magnum' name 2 years before Dodge ever thought of it?
__________________
1967 GMC CM-2500 Camper Cruiser, 351E V-6, NP 435 4 speed, Dana 60, and factory A/C. 2012 GMC K-3500 WT regular cab, 6.0L Vortec, 6L90. |
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#8 | |
I have a radical idea!
Join Date: Jan 2005
Location: Sweet Home Alabama!
Posts: 6,513
|
Re: GMC V6 fellers
Quote:
![]() What do the manifolds look like on a 351E? Are they smooth like the 305E, or are they ribbed like the bigger cu in V6's?
__________________
'67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435 ‘72 C-10 SWB , 350 4bbl, TH350 '69 C-10 SWB , 250 L6, 3 OTT '69 GMC C3500, dump truck, 351 V6, NP435 '84 M1009 CUCV Military Blazer 67 C-30 Turbodiesel build thread http://67-72chevytrucks.com/vboard/s...d.php?t=254096 My trucks http://s226.photobucket.com/albums/d...ediafilter=all Member of the 1-Ton Club! |
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#9 |
Aluminum slot wheels rule...
Join Date: Jan 2006
Location: Maine
Posts: 6,212
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Re: GMC V6 fellers
I assume you mean exhaust manifolds. Pick-up V6 engines (305 and 351) are smooth and restrict down to 2 1/4 in on the outlets. Bigger trucks are ribbed and are 3in at the outlet.
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