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Mod | | | Forums66 Topics128,087 Posts1,055,982 Members48,430 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Feb 2010 Posts: 7 New Guy | | New Guy Joined: Feb 2010 Posts: 7 | looking to see if anyone can verify intake/exhaust manifold crossover between 235 and 248 also, trying to upgrade generator to alternator, any suggestions | | | | | Joined: Oct 2003 Posts: 5,152 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Oct 2003 Posts: 5,152 | I can verify that you can NOT crossover a Chevy manifold to a GMC. Sorry, but it won't fit.
I've seen the generator bracket modified to mount an alternator. You can also buy an alternator bracket from most the old truck vendors.
1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more...
It's true. I really don't do anything but browse the Internet looking for trouble... | | | | | Joined: Feb 2010 Posts: 7 New Guy | | New Guy Joined: Feb 2010 Posts: 7 | any idea where an aftermarket intake manifold can be purchased??? thanks | | | | | Joined: Feb 2010 Posts: 7 New Guy | | New Guy Joined: Feb 2010 Posts: 7 | ... or am i making something?????? | | | | | Joined: Oct 2003 Posts: 5,152 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Oct 2003 Posts: 5,152 | Best bet is to watch eBay. I've got several of the GMC motors but haven't paid a lot of attention to hot rod parts for them. I'm not sure that anyone is currently marketing any new performance parts but someone else may come along with more information.
1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more...
It's true. I really don't do anything but browse the Internet looking for trouble... | | | | | Joined: Oct 2005 Posts: 90 'Bolter | | 'Bolter Joined: Oct 2005 Posts: 90 | Patrick's sells a 4 barrel intake manifold for jimmys | | | | | Joined: Feb 2010 Posts: 7 New Guy | | New Guy Joined: Feb 2010 Posts: 7 | | | | | | Joined: Jan 2009 Posts: 11 New Guy | | New Guy Joined: Jan 2009 Posts: 11 | Clifford performance also makes a four barrel intake. But I don't think any aftermarket intake will work with the factory exhuast manifold so that would mean fenton headers too. I haven't got ANYTHING for or against clifford just trying to give you all your opions. | | | | | Joined: Oct 2003 Posts: 5,152 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Oct 2003 Posts: 5,152 | Neither Clifford or Patricks clearly list GMC manifolds on their web sites.
Patricks says Chevy/GMC and lists manifolds, but if you look down through their list of offerings nowhere do they specifically list GMC manifolds and almost all the parts listed are specifically Chevy.
It would be worth a couple of phone calls before making plans that assume you can buy these parts.
1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more...
It's true. I really don't do anything but browse the Internet looking for trouble... | | | | | Joined: May 2005 Posts: 23 'Bolter | | 'Bolter Joined: May 2005 Posts: 23 | Patricks does sell a whole list of parts for inline jimmy's. If you call them, they will send you a catalog of their stuff.
Nice products too! | | | | | Joined: May 2001 Posts: 7,438 Extreme Gabster | | Extreme Gabster Joined: May 2001 Posts: 7,438 | | | |
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