Thread: What is the difference between the 454 and the 8.1 496?

Tweet

Thanks for any help. I am considering installing the 496 in my 70 and will need any help I can get so as to not reinvent the wheel and learn from others that have done this swap. Thanks!

http://i133.photobucket.com/albums/q.../chevelle1.jpg

I'm in the process of doing this to my boss's '90 SS454 p/u ...... 496 with dyno'd 505 HP with a 700R4 behind it.
Engine came from Patriot Performance in Ala. Trans is from Monster Trans in Fl. As soon as it's all bottoned up ..... I'll u tube it when it finished. I plan on using ALL of the 454 accesories.

I was originally going to utilize a 502/502 delux carb'd unit but after the dealer (chev.) couldn't deliver one (I gave them 45 days for what they said would be 3-5 days even with paying it in full up front) I went with the Patriot unit. Basically it's the same bar the little stroke it has.

That's it for right now.

Ratty 46

Forty-five

45??? Yourmath teacher is rolling over in her grave!! It's 42!!

However, the difference between a 454 and a 496 is bore size, and NO, you cannot bore a 454 to the 496 bore size.

Otherwise, the engines are identical.