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Old 01-06-2018, 04:32 AM   #1
64c10step
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Location: Tehachapi
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Horsepower?

Have a BBC 468 with approximately 8.5:1-9:1 cr, edelbrock 11-413-8 cam .510lift intake and exhaust ,dur .006,intake tappet 264 exhaust tappet270, edelbrock rpm air gap intake, edelbrock 750cfm carb, msd e curve distributor, 049 high performance heads, speedway short tube headers with dual h piped exhaust. Block casting # 3999289. Has between 155-160 pressure in each cylinder cold. Wanted to see if anyone could estimate the horsepower, no access to a dyno, any estimates would be greatly appreciated! Thank you
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Old 01-06-2018, 08:59 AM   #2
b454rat
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Location: Binghamton, NY
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Re: Horsepower?

With that small of a cam, I'd say 325-350 maybe. Last 454 I built was similar, but had more compression and cam, that was roughly 375-400....
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Old 01-06-2018, 10:40 AM   #3
damnyankee36
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Location: Alamogordo, NM
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Re: Horsepower?

I have a program called Dyno2000 that I've had for years that allows one to input all the specs of an engine to give you the hp and torque. Don't know how accurate it is but it's pretty cool to experiment with different parts to see the affect on output.

I suppose it's now called Dyno2018.
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Old 01-08-2018, 10:57 PM   #4
CST10
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Location: Gonzales, La
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Re: Horsepower?

I’ve got a 462CI with 049 heads ported, polished and matched to intake, edelbrock rpm intake, Holley 770 avenger carb, comp cam XM270 marine cam with .510 lift. Around 8.5:1 compression, roller rockers and lifters. 2400 stall converter.

Dyno’ed out at 379RWHP/419RWTQ all below 5200 RPMs. With a T350 tranny and driveline losses the shop estimated the engine at the flywheel was around 450HP/510TQ.

Very streetable.

I know it will roost a set of tires, ask my neighbors. Lol.
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Goldilocks the "Ol School Survivor" 1968 C10, SWB Stepside, 08/15 TOTM, 250 CI 6 cylinder, 3 on the tree, 3.73 rear, 3/5 static drop, 23,500 original miles.
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Old 01-09-2018, 01:26 AM   #5
64c10step
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Re: Horsepower?

Thanks for the responses, greatly appreciated!
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