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how much hp/torque u think I'm gonna get at the fly or tires

 
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Nate81camaro
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Joined: 18 Jul 2006
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1981 Chevrolet Camaro

PostPosted: Tue Jul 18, 2006 2:16 am    Post subject: how much hp/torque u think I'm gonna get at the fly or tires Reply with quote

I have an 81 camaro and have a 79 350, .030 over, hypereutectic pistons, moly rings, , comp cams high energy street 260H cam, using the stock heads that have are being done at the shop(76cc, 1.94/1.50) until I can get a good set of aftermarkets, and a 50k volt billet distributor I got off ebay for 75 bucks brand new. I think I'm gonna try out the RPM Air gap manifold (the one thats idle-5500), 1 5/8"headers and holley 600 carb since they're both fairly new.
I'm gonna be using my 350 trans, a convertor w/ about 1000rpm's more stall than stock, and the stock 8.5 rear w/ the 2.56's (upgraded eventually also....)

My questions -does it seem like a fairly reasonable combo (as far as using the heads, cam, intake?) Suggestions ?

Any idea what I'm gonna be puttin out (power-wise) ? I plan on gettin it dynoed when all said and done, but would appreciate a rough guess-timate in the mean time.
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cutlass389
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1978 Oldsmobile Cutlass

PostPosted: Tue Jul 18, 2006 7:25 am    Post subject: Reply with quote

That sounds like a good combo that will be a blast on the street. Don't expect big numbers out of it though.
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SMOKEmUP
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1979 Chevrolet Camaro

PostPosted: Tue Jul 18, 2006 8:00 am    Post subject: Reply with quote

What's the compression ratio?
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87calais
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PostPosted: Tue Jul 18, 2006 3:39 pm    Post subject: Reply with quote

It'll be fun, sounds alot like the 350 I had in my Cutlass. Those gears will suck ass, I won't lie, You'll porbably have next to no 60 foot, but once you're at like 20, it should friggen rock Very Happy
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Nate81camaro
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Joined: 18 Jul 2006
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1981 Chevrolet Camaro

PostPosted: Mon Jul 24, 2006 2:05 pm    Post subject: Reply with quote

well, since I'm runnin the stock heads (76cc) - comp ratio is 8.34....they're flat top hypereutectic federal mogul/sealed power. Damn I need new heads!
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cutlass389
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1978 Oldsmobile Cutlass

PostPosted: Mon Jul 24, 2006 9:32 pm    Post subject: vortecs? Reply with quote

If you haven't gotten that intake yet you might consider a pair of vortec heads. They have 64cc chambers that are quite efficient and would get your static compression ratio up around 9:1. They flow well to 5500 and only cost about $540 a pair complete.
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af2
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1933 Willys Coupe

PostPosted: Mon Jul 24, 2006 10:07 pm    Post subject: Re: vortecs? Reply with quote

cutlass389 wrote:
If you haven't gotten that intake yet you might consider a pair of vortec heads. They have 64cc chambers that are quite efficient and would get your static compression ratio up around 9:1. They flow well to 5500 and only cost about $540 a pair complete.


Agree!!!!!!!!!!! And the Pro intake is $140.00
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Big Dave
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PostPosted: Mon Jul 24, 2006 10:35 pm    Post subject: Reply with quote

With Vortec heads and manifold I would suspect you'd be at or slightly above the magic one horse per cube.
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Nate81camaro
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1981 Chevrolet Camaro

PostPosted: Tue Jul 25, 2006 7:21 am    Post subject: Reply with quote

Well here's the deal, motor is already together and running in the car. I spent about 300 to get the stock heads redone...money I know could have went to a pair of vortec heads. I already had roller rockers (1.5) or the stock heads and couldn't "pony up" another 180$ for a different set. I know this would have been the optimal time to get the vortec heads, since I already had to buy the intake (vortec one was like 30$ more). I simply was already way over budget, and my wife's a black belt Very Happy jk....
I just wanted somethin better than what I had (267) w/out spending alot. I was told should have around 300 fwhp, and 380fwtq (thoughts?)

As of now, the car isn't running anymore....It starts and everything, but I'm gonna take of the trans pan off because : When I start it, it'll only rev to about 1500 - while it does this the car is trying to go forward (it's like I'm to power brake the car). With the rear wheels off the ground, and shifted to reverse, the tires are still spinning like the cars in drive. When I put it in drive, I revved it to about 3k and let off to let it shift - never happened. I'm thinking either I have a valve body problem, or maybe something is wrong w/ my shifter detent inside the pan (everything is normal on the outside, seems to shift into all the gears). Everything seemed to be goin good, only put about 25 miles on the car before this happened....overall I'm happy, but will be more so when I'm able to drive it....

Nate
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s19243h
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PostPosted: Tue Aug 29, 2006 10:13 am    Post subject: Reply with quote

i have almost the same combo except i used a .015 steel shim head gasket and got 4 more points compression wich took me to 8.9:1 compression an i used the lunati cam ,i got 360 hp and 418 ft lbs torque at 4500 rpms
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Nate81camaro
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1981 Chevrolet Camaro

PostPosted: Tue Aug 29, 2006 11:49 pm    Post subject: Reply with quote

^^Thanx for the input...... Very Happy
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