Visual Check

[stpat]

Is there a way or view to determine what engine is in a vehicle? I know this sounds dumb but here is what I have, 1998 Suburban 2500, 4X4, 8 lug wheels, supposed to be a 7.4 engine, how do I tell if it is that or some other size engine, any visual clues or pictures of a 5.7 vs a 7.4 or other.

 

[Cadillacmak]

Is there a way or view to determine what engine is in a vehicle? I know this sounds dumb but here is what I have, 1998 Suburban 2500, 4X4, 8 lug wheels, supposed to be a 7.4 engine, how do I tell if it is that or some other size engine, any visual clues or pictures of a 5.7 vs a 7.4 or other.

Yes, they are all very different from one another. Center valve cover bolts are small block, big valve covers with side bolts are big blocks. Others would be quite odd. Post pictures and we will all chime in.

 

[Cadillacmak]

First 2 are small 350's from that era, third is a big block

 

[PlayingWithTBI]

SBCs have the 2 exhaust ports next to each other in the center, BBCs exhaust ports are evenly spaced apart.

 

[Cadillacmak]

First 2 are small 350's from that era, third is a big block

Note: Both of the small blocks I posted are TBI not Vortec, but close.

 

[b454rat]

Simple, small block, small, big block, big lol

 

[evilunclegrimace]

If you have normal human sized hands your fingers will reach down both sides of a small block valve cover, a big block valve cover, not so much.

 

[Cadillacmak]

Is there a way or view to determine what engine is in a vehicle? I know this sounds dumb but here is what I have, 1998 Suburban 2500, 4X4, 8 lug wheels, supposed to be a 7.4 engine, how do I tell if it is that or some other size engine, any visual clues or pictures of a 5.7 vs a 7.4 or other.

You gotta report back! What do you have?