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  #16 (permalink)  
Old 02-04-2013, 03:19 PM
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Quote:
Originally Posted by Hogg View Post
You realize it has a supercharger on top, right?

F bird has some good advice.

peace
Hog
I read he had a Weiand 177 blower on it. He thought the dyno numbers were low. I gave him the reasons why. Restrictive heads and exhaust, the cam too big (not for use with a blower engine). I didn't even mention the small 650 carburetor. It is just a case of incorrect parts for the type of engine rebuild. I see F-Bird'88 recommends changing to headers, a Crane cam (for a blower engine), larger aluminum heads to reduce c.r., and a 750 carburetor.

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  #17 (permalink)  
Old 02-05-2013, 12:21 PM
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The motor is in a 71 c10
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Old 02-05-2013, 01:54 PM
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I believe they are the smaller ram horns cause they dump out the back, Im pretty sure the vette ones are straight down. The rst of the exhaust is 2 1/2 inch all the way out the back with pypes violator mufflers.
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Old 02-06-2013, 10:04 AM
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So with a cam swap and long tubes what kind of hp could I see.
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  #20 (permalink)  
Old 02-06-2013, 10:36 AM
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Post your dyno sheet and lets look and see what needs the most work
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Old 02-06-2013, 10:43 AM
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I didn't take the print out, but when I get back to the shop I will get it
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  #22 (permalink)  
Old 02-06-2013, 10:58 AM
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If you have to type the results,include a/f ratios and sfc
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  #23 (permalink)  
Old 02-06-2013, 11:53 AM
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300/360

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Originally Posted by Waksabi View Post
too much cam.
waksabi,why do you say too much cam? look at the dyno results
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Old 02-06-2013, 02:56 PM
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Im thinking a fast truck would be alot better than a dyno number, would still be nice to break 400 at the wheels I dont see why that would be a problem, I did it with a 4.6 mustang on 6 psi of boost
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  #25 (permalink)  
Old 02-06-2013, 03:23 PM
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DYNOS are tools!

Quote:
Originally Posted by 1971chev View Post
Im thinking a fast truck would be alot better than a dyno number, would still be nice to break 400 at the wheels I dont see why that would be a problem, I did it with a 4.6 mustang on 6 psi of boost
you can take the dyno numbers other than just peak power numbers,like,,,SFC and compare that to your A/F numbers,then compare where your peak torque occurs,RPM wise and peak RPM of the top of the horse power curve.
See if the RPM levels match what you want for a finished product?
If your torque figure is in the wrong proportion to your horse power figure find out why,,,,camshaft has already been addressed,,,,
decide if 1 3/4 tube primary headers are in fact better than 1 5/8 headers for your application?

dont rant about the top power figures until the proper tuning is finished
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  #26 (permalink)  
Old 02-06-2013, 03:33 PM
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Do the mods everyone agrees on,bigger carb,better exhaust,different cam timing.Do some serious math.And listen to fbirds magic tree rat,you should make very big improvements. Dyno would be nice to set the fuel curve safely
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  #27 (permalink)  
Old 02-07-2013, 12:15 PM
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Quote:
Originally Posted by 1971chev View Post
I just dynoed my 327 and came out with 300 rwhp and 360 ftlbs with 6 pounds of boost through a weiand 177. The motor is bored 30 over 9-1 compression ported double hump 64 cc heads, comp 292 h cam and ram horm manifolds. My question is why does the 300 seem low for this motor.

Didnt read the entire post so maybe i missed something but 300 does seem low for a 327 with a blower. I think 327 with that cam and good heads should make 300 without the blower.

What type of dyno did you use. Was it a mustang dyno otherwise known as the heart breaker. They read much lower than most dynojet dynos.

Was the engine tuned for the blower to safe or performance levels. sounds like its got the safe tune running and needs some tuning to make some power.

Also do you have a lean rich guage hooked up. This is very important on a blown engine. Helps keep the tune in safe level and can alert you if the fuel pressure drop suddenly.
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  #28 (permalink)  
Old 02-07-2013, 12:31 PM
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Quote:
Originally Posted by F-BIRD'88 View Post
tell me what matters more. A dyno number you can brag about and/or get a warm fuzzy feeling about,.... or a fast truck?

You could just pay me the dyno test $$$'s and I'd ask my magic squirrel and he'd tell us all. And I'd give my magic squirrel a peanut. and we would not need any more dynos or real dyno testing.



You have made a good start but you have a bit of a testing and learning curve and you will not solve all the issues in 1 day.



This is R O C K Y My Magic Squirrel. Way more flattering than any Dyno....


Youre crazy man. I can dig.
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  #29 (permalink)  
Old 02-07-2013, 03:23 PM
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How well will the summitt cam k1105 has anyone ever used this one
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  #30 (permalink)  
Old 05-25-2013, 09:49 AM
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So finally did the longtube headers, head swap and 1.6 roller rockers and a summit k1103 cam still only made 300 rwhp I understand a little less with the smaller cam but with headers and heads still stayed the same. Am I missing something here. I checked the carb it is a 750 not a 650 which I thought it was.
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