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04-11-2012, 03:00 PM #1
Really stoopit question...I'll explain
I just bought a '94 C2500. My Dad checked it out and bought it, as I am out of state right now, so I haven't seen the truck yet.
Getting ready to order some tuneup parts, I checked the VIN...engine code N...seller said it had a 5.7, but the VIN calls for a 7.4. So, what do I look for to tell?
Here's some pics. I ~think~ the broken sensor is the CTS (coolant temp)?
This doesn't look right?
1999 Suburban C1500 LS 5.7 K&N filter, VentVisors, debadged aka "LAAT/i...Larty"
1994 C2500 454. Ex-Forest Service beastie. aka "Redneck"
2006 Saturn Ion...the Wife's car.
Empty spot that needs a Jeep...
04-11-2012, 03:51 PM #2
I assume you probably checked for this but up near the radiator or your battery there should be a little placard with your engine specifications that tells you the displacement. Of course if the previous owner had swapped out the 7.4 for the 5.7 this will not help.
2012 Silverado 1500 LS Crew Cab 4.8L 4x4
- Falken Rocky Mountain ATS 265/70R17, Line-X bed liner, Black Bowties, Stampede front deflector, DeeZee black diamond plate bed rails, TonnoPro Lo-roll cover, Antenna deleted, Spyder Projection Headlights with Phillips CrystalVision Ultra bulbs, Spyder Tail Lights & 3rd Brake Light, Rough Country leveling kit, PlastiDip'd emblems, and wheel hubs, Diablosport Trinity, 20% tint
Next Planned Mods:
Black OEM grill
"Coming through in a new Chevy, droppin' game like it's too heavy."
04-11-2012, 03:57 PM #3
Found some pics of the upper radiator hose layout, and that looks consistent with a 7.4, just not done right on this one.
04-11-2012, 05:22 PM #4
Not sure if the 94 350 is identical to the 93 one I have in the Burb but I know on mine the PCV hose goes to the passenger side valve cover and not the driver's side as depicted in the picture. That's the only thing that really pops out to me as I've never physically seen the 454 in those trucks.93 Suburban (Southern Slayer): TBI 350, 4L60E
73 Z28 Camaro: L82, TKO 600
"...Death smiles at us all, all a man can do is smile back..."
04-11-2012, 05:50 PM #5
---------- Post added at 02:50 PM ---------- Previous post was at 02:38 PM ----------
It's a 7.4.
Exhaust manifolds tells the story. 5.7/350 small blocks have the two middle ports next to each other. 454/7.4 have the ports evenly spaced.
04-11-2012, 06:37 PM #6
Yes Gryphon definetly a BBC. The monifolds did tell the story.
04-12-2012, 04:45 PM #7
You definitely have a 454 there. The broken sensor is the temp gage sensor, not the computer CTS. I think it's missing a guide or holder for that upper radiator hose.
Good Luck and God BlessRemember that if you're not part of the solution, then you're part of the problem!
04-12-2012, 05:02 PM #8
I agree with the 7.4. Looks just mu Burb engine. Manifolds.. Yep.Please Tell Your Boobs To Quit Staring At My Eyes
04-12-2012, 05:43 PM #9
04-15-2012, 01:09 PM #10
- Join Date
- Jul 2011
from my knowledge, those valve covers dont look like that of a smallblock, so its a good guess its a 454
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