1965C-10

Hey everybody, I've got this 1965 Chevy truck with a big block 396, stock other than the carb, and a TH400.

It's not really any faster than the 327 I used to run in it, in fact, it may be slower, then again the 327 had a lot more done to it.

With gas prices the way they are, I'm considering getting a 5.3 or 6.0 and 4L60-E to swap in it, probably keep it stock, just get a tune to maximize it's stock potential.

However, I read where a guy with a carbed ZZ4 crate engine and 700-R4 in a 1983 Chevy truck is getting 20 MPG.

So, would a 396 with a 700-R4 get near the same MPG as a 5.3 with 4L60-E?

I kinda like the idea of the fuel injection, love the LS1 in my 99 Vette.

worley.1

iTrader: (2)

I put a 5.3l with 4l60e in a 1990 454SS, it was getting around 8 mpg with the big block, now he gets around 15 mpg with the 5.3l. He has 373s in the rear.

pwrtrip75

iTrader: (8)

The 5.3 stock will probably be faster than the boat anchor 396 and power robbing TH400.
If you want to use it to pull a trailor use the 396, if you want performance, reliability and something fast go 5.3L.

1965C-10

Cool, any paticular years that are better than others?

I

SOM68SS

iTrader: (3)

Pick up the latest issue of hot rod. They did a shootout between the ZZ383, ZZ4, ZZ572, Crate 427, LS7,LSX 454stroker and a stock 5.3, all were in the same car "69 Chevelle" all they changed was fuel setup, and gear/converter combo's and the stock 5.3 was mid pack not too shabby