|12-29-2010 08:53 AM|
|12-26-2010 01:33 PM|
Do the LS's have different motor mounts? Is the bell housing the same? What would it take to convert a truck set up for a normal sbc to a LS series motor?
|12-26-2010 11:13 AM|
|zildjian4life218||I second the ls motor. The GM 6.0l lq9 makes like 385hp from the factory and I believe the lq4 makes a little less. On that horsepower tv they did a 6.0 with cam and intake and made close to 500hp.|
|12-25-2010 06:45 PM|
|12-25-2010 05:16 PM|
|b00tz||build a 496 torque monster or a 427 screamer. im trying to decide which would be better for my mud monster right now lol have a 427 TD to play with.|
|12-25-2010 04:43 PM|
Me Like Strokers
Send me a picture when you puke
|12-24-2010 05:54 PM|
|12-24-2010 05:03 PM|
Thanks for all them there speedy replies. Would I be better off with a 383
stroker? What type of fuel economy would I get with a 700R4 behind it?
Hey, is that a 9mm? That's nothing compared to this 44 magnum.
|12-24-2010 02:44 PM|
|12-24-2010 02:31 PM|
here you go.
a 385HP 396 build.
do the same with a 454 and make 440hp due to 14% more engine.
I use a 396 and a 454 in my c10 truck (not at the same time). Both engines are built the same way (mild) and the 454 has noticeable more power and gets better mpg (1 mpg better) as compared to the 396.
As for BBC's, I recommend that you build a 454 and use some good cylinder heads.
FYI, good fuel economy and big block chevy don't belong in the same sentence. My 4200 pound truck with a 3.08 gear and th400 trans gets 8 to 9 city and 12 to 14 highway (depending on speed). I would guess a 3/4 ton 4x4 would get 6 to 7 city and 9 to 10 highway with a bbc.
If you need 400hp and good mpg then you would be better off building a late model LS engine.
|12-23-2010 07:56 PM|
You need to be more specific with your goals/combo. I may consider a stock 454 with an rv cam and headers to be perfect for your application, or a $25,000 very well built and tuned 572.
Desired mpg's? Budget? Truck details?
|12-23-2010 06:36 PM|
sounds like the perfect time for a peanut port headed 454
and that should be easy to find
|12-23-2010 06:10 PM|
|FmrStrtracer||You can use a smaller cam and heads on a 454 and get 400hp, the same HP from a 396 will require bigger heads and cam(more fuel use). MPG will be more related to low cruise rpm(overdrive) and good vacuum signal.|
|12-23-2010 05:10 PM|
|matts37chev||ive always gone with the bigger the motor is, the less pedal you need to make it go.|
|12-23-2010 05:05 PM|
Big Block Chevy Horse Power Build
I am looking at building a Big Block Chevy for my '72 GMC 3/4 ton 4X4 with
factory A/C and posi traction. What cubic inch motor would be best to get
good fuel economy AND horse power? Is it possible to get
good economy and be able to run on pump gas? Will a 396 w/ 9.6:1
compression get better economy than a 454 w/ 9.6:1 compression? How can
I get over 400 horse power out of a 396 w/ a mild cam?