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Old 02-07-2013, 10:48 PM
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350 Weiand 177

Hi all,

This is my first post. My name is Bill and I reside in Perth, Western Australia, Australia.

My question is about the Weiand 177 blower on a SBC 350.

The combo consists of a 350ci 30 thou 3970010 4 bolt main with ARP bolts, forged 3.480 GM crank, 5.7 pink rods with ARP fasteners with SRP -12cc dished forged pistons. Heads are 76cc 487X heads inlet and exhaust runners matched to felpro gaskets, port work on bowls intake and exhaust, these have not been flowed on a bench so unsure of the flow numbers. 1.6 Lunati roller rockers guide plates and studs. Blower referenced Holley 850 cfm carb. MSD Ready to Run Distributor with multiple spark and rev limiter box set to 6200rpm (conservative).

Car weighs 2205 pounds with 3.55 ratios on 14 inch rims.

Have the pulleys to make 7-8 PSI on 92 Octane fuel (I am using american ratings for ease of understanding as our equivilent fuel is 98 Ron) supplied by a Holley Blue at 6psi.

My question is, which cam would you advise to achieve 450 hp at the rears if 450 is achievable and will survive for a while?

Springs will be bought to match the cam.

Your advise would be greatly appreciated.

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Old 02-08-2013, 03:27 AM
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Thanks for the reply. They appear to be mechanical cams. I am really not keen on them, prefer quite hydraulic flat tappet cams. Also the rpm is quite high 6800 rpm. Again thank you for your responce.
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Old 02-08-2013, 10:01 AM
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got to agree with fb, flat tappet hydraulic is the last cam I would pick.
at least use a roller hydraulic
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Old 02-10-2013, 06:04 PM
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Thanks FB. With that drive ratio 2.10 or 2.33:1 I would presume detonation would be a concern and if I push this little blower harder higher air temp will be created therefore creating a perfect situation for detonation. Yes/No?
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Old 02-10-2013, 06:34 PM
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Hi FB. No problems the engine has not been assemble yet and I can swap the psitons as they have not been installed. What dish -CC piston would you recomend to get to the 7.5:1cr. I was going to tune it myself but on second thoughts I will take it to a reputable tuner here with the gear to measure fuel etc etc. I have a "Performance Distributer" a HEI modified from your part of the world in the USA. This is a locked unit. Is this distributer just as good as any other or not that special. I will go with the F278-2. Just so you know this engine is being hooked up to a T350 with 2500 stall and its going into a BMW E30 2 door which weighs 2200 pounds. Should be interesting.
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Old 02-10-2013, 06:41 PM
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Quote:
Originally Posted by F-BIRD'88 View Post
Are you actually going to put some sticky tires on this car and use the power?? ..or..??
Will have to otherwise this car will be like driving in the rain with bald tyres, don't get me wrong it will be fun just not practical.

As stated above in a previous post the chosen vehicle is a 1985 2 door BMW E30 @2200 pounds and 3:55 gears we are hoping low 11s or high 10s if the car does not twist its self in half. The car will be driven on the road very occasionally for ****s and giggles and blow some european cars away. People will not know what hit them.
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Old 02-10-2013, 07:21 PM
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Cheers. I have read that when applying boost the spark can get blown out therefore a smaller gap is required.

Thanks
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Old 02-10-2013, 07:50 PM
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Aussie Bill,just for kicks and giggles,look up Judd V-8 BMW
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Old 02-10-2013, 07:53 PM
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I have seen video of this car awesome comes to mind and then insane also. Unfortunatley I do not have the budget of NASA like that BMW owner so I will have to use cheaper technology to achieve my desired result.
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Old 02-10-2013, 08:10 PM
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Aussie Bill,If you are talking to me? yes,many,check Judd hillclimb,BMW or Mercedes,10,000 RPM 3 ish liter engine, look up georg Plasa also
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Old 02-10-2013, 08:15 PM
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The one concern that I have is the extra weight over the front end. This car is going to be primarily driven in a straight line, not quite sure what it will do when I go to turn the steering wheel.
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Old 02-10-2013, 08:29 PM
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the extra weight in the front is like having a fat guy sitting on the hood
weigh all 4 corners and see where you are. Battery can move.Lighter wheels can help. see if any extra metal can come out? bumper reinforcements etc?
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