Cascade Crew

BigDaddyVu · Posted: Tue Oct 10, 2006 3:30 pm Post subject: 406 sb chevy

What kind of "fun" things i could to make gobs of Power. Alot of older engine builders sudjust stroke a 350, destroke a 400, stroke a 400, and one sudjested this combo machine your block as if you where building a 406 buy cadillac 429 pistons and use chevy 350 rods he states " this combination of the pistons and rods will make a longer dwell on top and bottom" (stays on top dead center a lil longer to compress the air/fuel mix). and he says he hasn't had any problems with piston slap. any one else got other sudjestions?

izcain · Posted: Tue Oct 10, 2006 5:21 pm Post subject:

I havent heard of that but maybe thats because I've never heard of a 429 cadillac engine. I've heard of the 500ci. and I believe like a 472 ci. caddy engine. Maybe he was talking about ford pistons?

aaron_sK · Posted: Tue Oct 10, 2006 6:48 pm Post subject:

Could go with a 348 combo.

350 block punched 0.30 over, with a 327 crank and 6" rods. Apparently the dwell is enough to allow 11:1 compression without race gas. It's similer to the 348 engine Chevy put in trucks before coming out with the small/big block setups.

I'd shy away from the 400 block just cause of the problems with splitting them over 500hp.

rjmcgee · The Hammer Joined: 08 Jan 2004 Posts: 2328

izcain · Posted: Tue Oct 10, 2006 7:04 pm Post subject:

I have dealt with some 406's before and they ran like a raped ape but they were plauged with problems all the time and they start out not as strong as a general 350 block anyways due to their siamesed cylinders. Are you looking for something relativly cost effective or just something "diffrent"?

aaron_sK · Posted: Tue Oct 10, 2006 7:16 pm Post subject:

rjmcgee · The Hammer Joined: 08 Jan 2004 Posts: 2328

aaron_sK · Posted: Tue Oct 10, 2006 7:20 pm Post subject:

Yes, because a 350 with a 327 crank is actually just a 327.... Laughing

RSFreak · Posted: Tue Oct 10, 2006 7:51 pm Post subject:

Kinda like a 305 with a 350 crank! Laughing

BigDaddyVu · Posted: Tue Oct 10, 2006 9:37 pm Post subject:

305 and 350 cranks are the same... anyways this guy also sudjested on putting on a pair of 350 head 441 and there was another set i can't remeber but anyways he stated drill out 4 steam holes on each side of the heads for better cooling beings the 400 heads are a lil low on compression.

wanarunhard · Posted: Tue Oct 10, 2006 9:38 pm Post subject: power

guys i know used to take a 400 small block and destroke it with a 350 crank and a big cam made lots of power they sell a kit to do it came out as a 383 and yes there was a 429 caddy in 65 had one for a long time sweet runnin motor also 472 and a 500 had em all very torquey

izcain · Posted: Tue Oct 10, 2006 10:18 pm Post subject:

Huh I didn't know they made that 429 engine I guess ya learn somethin new everyday Laughing

The 377 is a high windin engine and I have seen plenty of those perform nicely as well (400 destroked).

RSFreak · Posted: Wed Oct 11, 2006 5:37 pm Post subject:

QwkTrip · Posted: Wed Oct 11, 2006 8:12 pm Post subject:

I haven't had a 400 SB, but my understanding is that it is hit or miss on reliability due to the siamesed cylinders and possible core shift of the cylinders. I don't remember the statistics but the success rate of overboring the cylinders is much lower than a 350 SB. You can put money in a block and lose it all shortly thereafter.

But if you get a reliable piece... they can run hard.

aaron_sK · Posted: Wed Oct 11, 2006 9:24 pm Post subject:

http://www.turbomustangs.com/smf/index.php?topic=68804.0

Quasi-Traction · Posted: Wed Oct 11, 2006 10:24 pm Post subject:

I'd hate to see where the crank ended up after this carnage.... Rolling Eyes

izcain · Posted: Wed Oct 11, 2006 10:51 pm Post subject:

Hmm I wonder if he was able to salvage his oil pan after that? Laughing

blue89 · Posted: Thu Oct 12, 2006 7:10 am Post subject:

Have you guys heard of changing the firing order with a different cam to make way more hp? A friend of mine said he saw it on a show on PowerBlock. Didn't quite make sense, but a big cam always makes more power...

I know you can get some sort of "flat" crank to completely change the firing order, but these guys just changed out the cam and swapped some plug wires around.

Oh ya, you can take a 2.8 block, put a 3.1 crank and rods in it, then mill down the 2.8 pistons by .060 or so to clear the valves. 11:1 compression 3.1L! V6 for the win!

Dewey316 · Posted: Thu Oct 12, 2006 8:05 am Post subject:

Its a 4-7 swap, basicly cyls 4 and 7 move the same, but normaly one is on exuast while the other is on an intake stoke, they just switch which is which in the cam. I don't know that it makes any more power, I think the reason for doing it, is generaly to put less stress on the crank.

Twilightoptics · Posted: Thu Oct 12, 2006 8:25 am Post subject: