450hp out of leftover parts?

[plovett]

I don't know, but my feeling is something like 470 hp and 490 ft/lbs. 

paulie

[plovett]

peaks like 6200 and 4400 rpm?

[chilly460]

Sounds feasible and peaks seem in the ballpark, lot will be determined by whether I have a clue or not on the head porting, love to see 280cfm if I can

[plovett]

Sounds feasible and peaks seem in the ballpark, lot will be determined by whether I have a clue or not on the head porting, love to see 280cfm if I can

Yes, good heads are critical.

JMO,

paulie

[plovett]

You said you don't care about cheap gas?  Does that mean race gas or high octane pump gas or?

[chilly460]

Just meant I don’t care if it requires 92 oct

[plovett]

I understand.  So I'm thinking you want a true 10.5:1.  Or close to it.  Not just calculated but measured.  Not saying you wouldn't do that.  Just thinking out loud.  A lot of people think they have a certain compression ratio and it ends up lower in reality because the deck height wasn't actually measured.  Or the chamber wasn't actually measured.  I once thought I had a 10:1 engine, but it was actually about 9.3:1 because my chambers were much larger than advertised.   I don't know the advertised duration of the cam you mentioned, but it sounds like with 92 octane you could run 10.5:1.

Might as well get as much as you can. 

JMO,

paulie

[plovett]

What is this 416 going in?  What rear gear and tranny?  What stall if automatic?

[chilly460]

Yep, this would be a "true" 10.5CR with chamber volume measured, "crevice" volume figured, etc. 

416 would most likely go in 63 Merc, 4.10 with a TKO 500.  Although a little heavy, plenty of gear and obviously wouldn't be trying to drive around town lugging it.  Also on the lookout for mid 60s F100 which would be other possible chassis, that would be Toploader/4.10 type of deal. 

[plovett]

Yeah, that is plenty of gear, even for a big car.  So the true 10.5:1 compression is more feasible.  Sounds like a fun combo.  If your heads turn out good it might turn more rpm than you would think at first.  6500 rpm sounds easy to me.  Maybe a tad more.

JMO,

paulie

[chilly460]

We will see, I wanted a combo that is focused more on power and not as concerned as being a "nice" street motor.  I know this is still relatively calm compared to some combos, but it has to be just livable enough to pull the overdrive, but with the compression and cam I'm not expecting to be able to lug it around at 1800.  Manual brakes and now manual steering, so with the stick I can get away with some cam. 

[KMcCullah]

Hey Chilly- Are you planning to dyno this 416? Your C1 heads sound similar to the ones I did for my 416 Highboy project. 2.15/1.65 valves. It takes a lot of rubbin' to make those valves work right in C1 casting. Kinda curious what kind of steam it's gonna make. Nice build man!

[chilly460]

I am planning to dyno it, mostly because I'd really like to know how the backyard port job works.  If it doesn't make good power, I can blame the dyno   If it makes too much power, others can blame the dyno

I will have to post pics of the C1 heads once I'm done with the 390 I'm working on at the moment.  I've done quite a bit on the intake side, plan is to get them rough cut for the 2.15s so I can blend to the seat, then have the valve job done, if that's possible.  No way I can see being able to blend it without nicking a finished seat. 

There's only one shop with a dyno local to me here in Richmond, he said he can put an FE on his dyno but we'll see about headers and such when it comes time to actually do it. 

[gdaddy01]

just do it , cool to hear of a build like you are doing .

[My427stang]

So Chilly,

I love the idea of a rowdy 416, but why not make a rowdy 416 with BBM heads and do the experimental motor with the 390?  Power will be up significantly.

The other option of course is if the 416 with iron heads behaves the way you want it, you can swap heads later for a little more, but with the good parts in the 416, seems like a win