Quote:
Originally Posted by pont3
I drive a 455 equipped '71 Lemans Sport EVERYDAY, and I can tell you the 400hp '06 GTO has VERY smooth low rpm power delivery, much more so than the 455.
Heck, this whole post is like 2003 all over again. I love my old Goats AND my new Goats.
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Was not "cutting down" the new GTO's.
I was referring to "transplanted" 350/305 small block Chevy engines
into cars originally equipped with Pontiac engines. I have driven my car with the 455, and I have driven the newer GTO's and G8s with the LS type engines. I do mechanical work on all types of late model cars. They do have a lot of torque at lower rpms, as well as in the upper ranges. A pretty impressive engine. If you ever seen them with the intake off, and the clear shot down the ports, you could understand why they make the power they do. These are GM powertrain engines, however, not "Small Block" Chevies, as even marketing at GM tries to show sometimes. The only thing they "share" with a SBC is the roller lifters, the rod bearings, and the basic layout of the Bellhousing pattern. This engine actually "behaves" more like a Pontiac, Tall Deck Olds, or BB Buick in its power delivery at low rpms, then "acts" like a small displacement OHC engine in it's ability to "Rev up". The newer GTO's are quite impressive for a high performance daily driver. Older Pontiacs with a 350 SBC (especially ones with the entire Summit Catalog thrown at it)are just plain boring to me, a "cop out" way to power up old GM cars.