250 inline 6 power - Chevy Nova Forum
Visit our sponsor, National Nostalgic Nova
 
Steve's Nova Site is an automotive enthusiast website dedicated to the 1962 - 1979 Chevrolet Nova, Chevy II and Acadian automobiles. We work together to preserve, restore, drive, show, race and provide fellowship for these classic cars. This is one of the best places to find information about parts, rebuilding, restoration and racing. This website is not affiliated with GM, General Motors or Chevrolet in any capacity.

Go Back   Chevy Nova Forum > Body, Chassis and Mechanical > Drivetrain & Performance


StevesNovaSite.com is the premier Chevrolet Nova Forum on the internet. Registered Users do not see the above ads.
Reply
 
Thread Tools Display Modes
Old 29th-November-2007, 11:19 PM   #1
matt's77nova
 
matt's77nova's Avatar

Title: Nova Junior Member
iTrader: (0)
Status: Offline
Join Date: Nov 2007
Location: anderson
Nova(s): 77 2 door
Posts: 159
250 inline 6 power

just wondering how much power does my motor have i put a new racing cam in it shaved the head and put the standard pistons back in it





how much power does it have stander
and then with the upgrades
  Reply With Quote
Sponsored Links
Advertisement
 
Old 29th-November-2007, 11:44 PM   #2
Scooter
 
Scooter's Avatar

Title: Nova Guru
iTrader: (5)
Status: Offline
Join Date: May 2005
Location: Texas
Nova(s): 1964 Chevy II 4-Door
Posts: 2,335
we'll need the cam specs
__________________
VintageNova.com
  Reply With Quote
Old 30th-November-2007, 07:49 AM   #3
Twisted6
 
Twisted6's Avatar

Title: Nova Guru
iTrader: (1)
Status: Offline
Join Date: Apr 2004
Location: Daytona B fla.
Nova(s): 64 SS chevyII
Posts: 949
well first off the stock was anything from a advertised 100-155 hp depending on the year and what it was in.

Secondly I can not see anyone installing a "RACE" cam In with stock /standered pistons. and a 1b carb and Stock exhaust.
a BIG waste of money Because the motor/Head can't even breath enough for the Cam you say you just installed.
Many HP cams Need Or want more compression then stock.and even if you have went from the stock 8.5-1 to 9-1
That still not enough compression for any RACE cam. Most want at the very least a good 10-1 PLUS compression. And a More open exhaust system (then stock)
So in NOT knowing the cam specks And for what I see,I think you would be lucky if you have hit even 200hp And That's if the motor was stock at 155 hp.

So to have been so Bold/ Point Blank. But that is my 2cents.And I think you would have been better off with some kinda dual exhaust headers or Tom Langdons dual exhaust.
And Doing some head work to get the Head to Breather Better.Then just installing a New cam,and milling the head.
__________________
T6R }[oooooo]
www.t6racing.org/id6.html
Larry /aka Twisted6
  Reply With Quote
Old 30th-November-2007, 09:27 AM   #4
matt's77nova
 
matt's77nova's Avatar

Title: Nova Junior Member
iTrader: (0)
Status: Offline
Join Date: Nov 2007
Location: anderson
Nova(s): 77 2 door
Posts: 159
been wonting to find dual exhaust for a inline 6 dont know the spec of the cam right know will have to look. the motor was borded out befor i got it. i for got what it was borded out to so i put the same piston size that was in it did not have no more money to spend on every thing lol saving for a 350 borded out 60 over i got to drive the inline for a about a year to i get my new baby fix
  Reply With Quote
Old 30th-November-2007, 11:27 AM   #5
Stan Sixes

Title: Nova Senior Member
iTrader: (0)
Status: Offline
Join Date: Oct 2007
Location: Seattle, WA
Posts: 292
The motor looks nice but I think this is the only one I've seen here with the later head. The intake manifold is cast into the head, which really limits your options as far as headers and carb. Instead of milling that head you should have gotten an older head with separate manifold from the wrecking yard. Then you could look at Clifford or Offenhauser intakes for 4 barrel, and Clifford headers, the Stovebolt dual exhaust manifolds, or the big 292 exhaust manifold Sgtsteve told me about.
My '72 250 was rated at 110hp stock, and since your engine is later, it may have been less. Like Twisted6 said the cam may not have made much difference with the 1 barrel still on there. He knows his sixes. Shaving the head might have helped, though. Does it feel more powerful?
If the engine was bored you should have gotten the right oversized pistons I would think. Others here would know more about that.
If you decide to keep the six I've got an extra Holley 390 four barrel if you're interested.
  Reply With Quote
Old 30th-November-2007, 11:51 AM   #6
ALLT4
 
ALLT4's Avatar

Title: Nova Guru
iTrader: (1)
Status: Offline
Join Date: Oct 2007
Location: Howard PA
Nova(s): 1977 Concours ZZ383
Posts: 2,601
I had a '77 6 banger with the same integral intake head design. Basically it sucks, well it doesn't suck at all really. There isn't much you can do with that like was mentioned earlier. You've done a decent job making it look pretty good, drive it like it is for now and enjoy it. Don't waste any more money on THAT 6 banger. Maybe if it had a different head it may be worth doing some upgrades, but consider what you're going to pay and you could get a running V8. Maybe not a tire shredder but something better to start with.

Don't get me wrong I have real soft spot in my heart for that motor, but that's where it's staying. If I wanted a reliable decent looking car that motor would suit just fine. But face it we all want performance and that "sucked back in the seat" feel. The cheapest way to get that is with a small block Chevy and not that particular 6 cylinder.

Of course there are those that "dare to be different" however that takes a little bit more cabbage, time and effort. If you're willing to pay the price and invest that much time, for sure it's cool. It's all what YOU want in the end.
  Reply With Quote
Old 30th-November-2007, 01:18 PM   #7
Stan Sixes

Title: Nova Senior Member
iTrader: (0)
Status: Offline
Join Date: Oct 2007
Location: Seattle, WA
Posts: 292
Matt, if nobody else has said it, welcome to the site. I would agree with ALLT4 that if you want to save money and get the most power, save it for the 350. Stuff for the six can cost more. I've found quite a few guys here that "dare to be different" though.
If you have time to read it, check out a post from October called "will these headers fit a 194, confusing and misleading" started by Mark Sipes. It's pretty long, but there's quite a bit of discussion about the options for a Chevy six. It strays from the original subject a bit but there are some good pictures from Sgtsteve. Having spent quite a bit of money on performance parts for my six, I would consider duplicating his setup for minimum cost and cold weather driveablility. I don't know where you're located, but here in Seattle it's in the lower 30's in the morning and my motor doesn't like it.
  Reply With Quote
Old 30th-November-2007, 03:18 PM   #8
ALLT4
 
ALLT4's Avatar

Title: Nova Guru
iTrader: (1)
Status: Offline
Join Date: Oct 2007
Location: Howard PA
Nova(s): 1977 Concours ZZ383
Posts: 2,601
Will these headers fit a 194

There ya go.
  Reply With Quote
Old 30th-November-2007, 06:34 PM   #9
Bruce
 
Bruce's Avatar

Title: Nova Guru
iTrader: (0)
Status: Offline
Join Date: Feb 2004
Location: Boise, ID
Nova(s): 6 cylindersssssss
Posts: 813
I am a big 6 cylinder fan, but if your goal is to put a 350 in the car anyway, save your money for the V8 and coversion pieces. If you already have the cam, pistons etc for the 250 you might be better off to find a cheap decent running used 250 to stuff back in your Nova for now and sell the 6 cyl hot rod parts.

If you want to do something different, an inline is a lot of fun, but horsepower does not come cheap.
  Reply With Quote
Sponsored Links
Advertisement
 
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Non Nova Power Steering Question 62civa Steering, Suspension, and Chassis 3 18th-June-2006 05:59 AM
inline 6 to v8? dinnut 3rd Generation Chevy II/Nova's 3 12th-June-2006 07:19 PM
Power disc booster problem? 2novacars Steering, Suspension, and Chassis 7 23rd-May-2006 06:50 AM
power steering fluid type? bkhotrod Steering, Suspension, and Chassis 3 9th-April-2006 09:05 PM
what to expect with different lobe centers 69NovaSS Best of Drivetrain & Performance 14 1st-December-2005 09:43 AM


Site best viewed set to 1024 x 768.

All times are GMT -4. The time now is 03:55 AM.

Custom Designed for Steve's Nova Site by: vBSkinworks

 
Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Lt

Garage Plus vBulletin Plugins by Drive Thru Online, Inc.