Help with planning out an engine

[BigAls87Z28]

Good point. No sense in spending all that money on boring the block without running into problems with the rest of the engine parts.

[wretched73]

You guys keep saying don't waste my money boring the block and keeping a stock bottom end....

What would you recommend for crank/rods?
If I'm spending the money to bore the block and buy a crank and rods, should I just stroke it at the same time?

[sweetbmxrider]

you make your power in the heads, spend money there. have the block cleaned up and if it needs to be bored, have them bore it. to get to 500hp na, you'd be better off with a 383/396 crank imo. head flow should be in the low 300's at max lift. compression ratio should be around 11:1. really just gotta talk to people who do it every day and see what they say works best for you.

power is made in the top end.

[wretched73]

Thanks for the input, but just to let you know I mellowed myself out a little and decided to shoot for something around 400-450 na

[sweetbmxrider]

brandon just hit 455 with his 383 on 11:1 compression and head flow in the 280 range at .600 lift. you could do it with a stock bottom end though, just need ported heads and a decent cam.

[WildBillyT]

Originally Posted by sweetbmxrider

brandon just hit 455 with his 383 on 11:1 compression and head flow in the 280 range at .600 lift. you could do it with a stock bottom end though, just need ported heads and a decent cam.

LT1, right?

Wretched, what type of running gear do you have for this? MSD, carb, distributor, etc?

[LTb1ow]

Originally Posted by WildBillyT

LT1, right?

Brandon's is, but still a regular ole SBC should be simple to get those numbers, flywheel at least.

[WildBillyT]

Originally Posted by LTs1ow

Brandon's is, but still a regular ole SBC should be simple to get those numbers, flywheel at least.

Absolutely. I was just thinking of the 11:1 on the street with an all cast iron Gen I.

I stand by my previous statement. Vortec 355.

[LTb1ow]

I am not sure of the practicality anymore, but if you can get a 400 crank, and clearance your 350 block to fit it in, then get some 5.7 rods, KB hypercraptic pistons, and a final CR of around ~9.8:1 ... throw some 186 heads on there with a good port job ~240cfm@60 and a CC 270H on a 106....

voila... ~420hp

David Vizard is the man.

And again, join a forum more focused on SBC shiznit...

[WildBillyT]

Originally Posted by LTs1ow

I am not sure of the practicality anymore, but if you can get a 400 crank, and clearance your 350 block to fit it in, then get some 5.7 rods, KB hypercraptic pistons, and a final CR of around ~9.8:1 ... throw some 186 heads on there with a good port job ~240cfm@60 and a CC 270H on a 106....

voila... ~420hp

David Vizard is the man.

And again, join a forum more focused on SBC shiznit...

I'd skip those heads and cam for more modern ones.

[Syzygy]

i have a touch over 500hp on my 360 on pump gas. and i even have procomp heads. ported to hell, and back, but they only cost me $700