Because I want to!!

[KidAgain]

Ok, this may sound nuts (and probably is), but I want to build a SBC tribute motor for my 55 Nomad. The point of this project is to get as much HP out of a 265 as possible (with pratical efforts). My only requirement is that I start with a 265 block and that it look as much like a 56 Corvette Dual Quad engine as possible. Yes, I know it is not finanically the best return for the bucks. Yes, I know there are ways to get much more HP for less bucks. Indeed, I have a correct 327/350 original complete that I could use and easily have a faster setup. But a long time ago (1965), a really cool custom builder told me that it's more about putting your signature on something that just beating the other guy down the track (albeit that is awesomely fun).

So, don't bother telling me to use a stock 350 for starters and then adding or using some other really succesful method of getting lots of HP.

ANYONE CAN SPEND MONEY AND GET HP!

I want to do the crazy thing of putting a period correct 265 (albeit one year older for obvious reasons) with as much HP as possible to honor the very engine that started it all for Chevy, the SB 265 V8.

The goal is 300hp. All advice will be greatly appreciated!

 

[LEJ ZO6]

It doesn't sound nuts to me.

With a little compression, a good head job and a modern roller cam I don't think your goal of 300 HP is unreasonable at all.

That's what's great about hot rodding, you can build what will make you happy and get a lot of satisfaction out of it.

Lloyd

 

[DorianL]

I can't help you cuz I am not an engine building guru - but I certainly dig the idea :mrgreen:

 

[grumpyvette]

it should be fairly easy to reach 300 hp with modern components
Id start by looking at the engines weaknesses and strong points
the short stroke allows it to rev but the low displacement will require a reasonably wide lsa on the cam and a bit of lift to allow the heads to breath, you can,t select big port heads if your going to maintain optimal flow speeds in the ports so Id select a 170-180cc port size and a cam like the crane

114681 solid lifter cam,
http://www.cranecams.com/product/cart.p ... il&p=24424

heads
http://www.trickflow.com/partdetail.asp ... toview=sku


intake
http://www.summitracing.com/parts/EDL-20254/
use a good baffled oil pan

match that to a muncie 4 speed and a 4.56:1 rear gear and select pistons that will get you to about 10.5-11:1 and you should have little problem, but ID also suggest a 7 quart baffled oil pan and windage tray be used and 6" connecting rods with a FORGED crank and pistons would be a good ideal as far as durability goes.

heres a quick software dyno using vortec heads which are markedly inferior to the suggested trick flow small port heads, yet even they look rather impressive

heres with the 175cc trickflow heads that provide both better flow and better cooling and less tendency toward detonation

 

[grumpyvette]

WELL?
QUESTIONS?
COMMENTS?

BTW, just playing with the software dyno, I got this result, now I'm always very suspicious of software dyno results but they are useful at predicting trends and that shows a definite trend in the direction that your indicating you want to go,
yes its not what you were asking about, but I just thought you might be interested