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Topic Review (Newest First)
04-22-2011 06:47 PM
Onefunponcho techinspector1 thats a great build

Pontiac like TQ numbers and with the low rpm powerband and stock converter.

Thanks for sharing
04-22-2011 06:02 PM
Ron Golden
Horsepower and torque

We're just about finished building a 350 SBC using the 170cc RHS cast iron head. The intake flows well after a little work (265cfm @ ).600") but the short turn on the exhaust had to be modified. If I remember the exhaust flowed about 210cfm after we worked on the short turn.

This engine will be a "mule" motor to go on the dyno for R&D purposes.

Are the HP & TQ figures from the engine described here?

Ron
04-21-2011 10:41 PM
techinspector1 I might be thinkin' 375-400 horsepower, 425+ lbs/ft of torque with 9.0:1 static compression ratio, stock converter, mild cam (204-212 intake duration @0.050", 110 LSA), RPM intake, 750 carb, 1 5/8" long-tube headers and 3.50 rear gear. Just a real nice cruiser. I really, really like these heads. They're inexpensive and they work. This is for one bare head....
http://www.competitionproducts.com/R...info/RHS12407/
Then buy one valve kit (fills 2 heads)...
http://www.competitionproducts.com/H...ductinfo/8511/
One guide plate kit (fills 2 heads)...
http://www.competitionproducts.com/M...tinfo/42151-8/
And one rocker stud kit (fills 2 heads)....
http://www.competitionproducts.com/A...info/134-7101/
Here's the cam...
http://www.summitracing.com/parts/HRS-110315-10/
or here...
http://www.competitionproducts.com/H...nfo/110315-10/
And here are the roller lifters...
http://www.summitracing.com/parts/HRS-91164N/
or here...
http://www.competitionproducts.com/H...uctinfo/91164/
Use a Howards composite distributor gear (will outlast a bronze gear 3 to 1)...
http://www.competitionproducts.com/H...uctinfo/94402/

RPM HP TQ
2000 148 390
2500 188 395
3000 238 417
3500 292 439
4000 342 449
4500 379 442
5000 401 421
5500 400 382
6000 355 310
Cam installed retarded 2 degrees.
04-21-2011 09:02 PM
Ron Golden
350 Sbc

Take a look at the Chevy crate motors. Best bang for the buck. Several HP levels available.

Ron
04-21-2011 08:43 PM
marl1216
horsepower and torque

I am restoring 1955 chevy, pulling out the original 265 and replacing it with a 350. I do not want to overkill on power but I do want something mild to medium.

recommendations on HP and torque

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