Nice!

Yeah there were some doubters in another forum, but I guess they are not familiar with 1.7 hp per cube street motors?

Bret

 

I would be willing to bet that most of the "doubters" own 12/13 second cars and have probably never built any type of SBC engine....more internet victims.

 

Actually most of them build drag stuff and don't get this fast street car stock hood loonies like us.

 

That suprises me (drag engine builders) since 1.7hp/ci. NA should not be difficult to acheive with a superior (SB2.2) head and some rpms. Heck, that is only 650hp on a 383 which has the restriction of a much smaller bore than Alan's new engine.

His previous combo made more than 650hp with 383ci.

 

Hey, they don't get what they don't know. Most of these guys like 280 duration cams, dome pistons and lots of RPM.

 

People don't believe what they don't understand is right.

Our's is right on the ragged edge of a "street" motor. I would not consider it such because of the comression. It makes 1.85 per cube and would be in that 1.7+ range even if we dropped the squeeze down to a pump gas level. Like MG, I am a little dissapointed in our numbers only in that the heads have so much left in them considering the low, restrictive intake we used for hood issues. Mine only flowed 380/270. I have had lengthy discussion with my engine builders about this and we feel that 2 hp / cube is attainable with head / intake work and a few other changes on a street type motor with this combo.

 

Ah, it's all good where I'm standing.

I think the level of buildsmanship is only going to improve where street engines are concerned. Only because guys like us are interested in pushing the NA stuff to new boundries.

I know I've poked at Bret more than a few times because he's a young guy.

Fact is... because he IS capable of thinking outside the box... I'd send my stuff to him before I'd pay one of the big name drag engine builders who's set in the "old" way of thinking about engines. If for nothing more than the simple fact that he'd be willing to give it a TRY.

I was at a big name drag engine builders shop last year and overheard one of the staff tell a customer that any small block chevy stroker making in excess of 500hp was not going to run on pump gas. I started to tell him how many times I've done it.

Dave,
You'll find more as you go along. I found quite a bit with my last combination once I got it to the track and started tuning it there. Good to know that there's always more left. Good luck!

-Mindgame

 

You probably don't want to let Bret see this post...he'd have to add some more Velcro to the sizing band on his "Jim Beam Racing" cap.

Yeah, he does think out of the box sometimes, and gets me thinking there occasionally. There have been some interesting "discussions" on out-of-the-box engine topics around here. Rarely do they come to blows and it's not a replay of Orange County Choppers either.

 

Thanks MG, That means something! I'd like to build one of your setups, I'd probably learn something!

If I ever get my C5R headed motor together I want to shoot for 1.85-1.9 hp per cube AND make it a driver.

Bret

 

Wow, I get busy in the garage for a couple weeks working on the money pit, and I miss out on all the good talk about 2.2s. Sounds like everyone is coming around with their projects though! I'm just wasting time making everything look pretty before I start wiring the car. And as for hood fitment, I envy those who are working with anything smaller than a 4" cowl. In reality, I don't think I can do it. 5" probably is my cowl size in the end. Specs though are another whole story. I just hope it runs in the end.

427ci Motown Block
12.4:1 CR
415/309 cfm
267/273 dur .730/.715 lift
GM 12370854 Intake
Wilson Elbow / 105mm
2"-2 1/8" Lemons

Not sure what I'll be at for horsepower, but if it's better than my old 383 LT1 I'll be happy. What have you guys been running for total timing on your 2.2s?

Bryce

 

Lower the engine 2". Not hard just time consuming.
With a BMR K member it shouldn't be hard.

 

Bryce,

Start her out with 26 degrees and move from there. I settled on 28 degrees but my chambers are most likely a bit different from what you're running. Especially if you're still in the low 40cc range.

Those are some large headers.

I'm running 1-7/8" to 2" step on mine.

I think the problem alot of people have with these builds is they don't have a baseline. How many 430+ ci sb2.2 street builds do you know of? I think we'll be seeing alot more in the next few years though.

That and Bret's C5R stuff are likely to become much more common. Now if I could just get my passenger side valve cover gasket to seal.

-Mindgame

 

Thanks mindgame. I was going to start at 28, but starting safer doesn't hurt anything either. BTW, I have 49cc chambers. And as for baselines, I know what you mean! I can't even start to count the hours I've been on this computer trying to build a knowledge base for this thing. Some days I think bigger pills on the 396 LT1 I had lying around would've been just as much fun!

And, yes, the headers are enormous. I don't think I would've used such huge primaries, but that's what came with the heads. I guess they won't hurt when I spray it.

 

Aye, didn't know you were a sprayer Bryce.

In that case, the two inchers would be my choice too.

You plan on running a plate or direct port?

I'm very confident in saying... you'll never want to look at another 23 degree head once you get this thing up and running.

-Mindgame

 

I'm insulted.. i hope to build a sb2 based motor after i get this one going... w/ a dart block of course, and maybe some forced indux...