View Full Version : BBC what do you guy thank it will make
wibberg350
03-05-2011, 05:12 PM
Its a 461 13.8to1 scat rods and crank srp pistons Gm 990s ported 2.30 in take 1.88 ex comp cam .714 in .680 ex 278 in 282 ex at 50 intake is a ported super vic 1050 domanator on e85 2in into 31/2 headers what do you guys thank
fast75vega
03-05-2011, 07:04 PM
i would guess somewhere in the area 750 to 800ish
mopar1968
03-05-2011, 07:21 PM
I agree with ''Vega'' somewhere in the 750 range :!: How ever we do have a expert on here that can pin point it to the horsepower :!: :!: :lol:
Mark
wibberg350
03-05-2011, 07:33 PM
thank you guys we will see in a week or so what it makes just like to know how close it is to what i was looking for i was hopeing for 750 or so any ideas on foot pounds it will put down ?
kwkracing
03-05-2011, 08:17 PM
i would say 550-600hp
bbchevy
03-05-2011, 08:26 PM
Its a 461 13.8to1 scat rods and crank srp pistons Gm 990s ported 2.30 in take 1.88 ex comp cam .714 in .680 ex 278 in 282 ex at 50 intake is a ported super vic 1050 domanator on e85 2in into 31/2 headers what do you guys thank
715-730 And call it a Day!
Later
G 8)
zipper06
03-05-2011, 09:59 PM
I think about 700 if that, because i think the 990 heads are going to hurt you.
JMO
Zip.
contagious
03-06-2011, 05:16 AM
That's a lot of intake valve for a 461,may work with the e85.
maxpower671
03-06-2011, 06:34 AM
I think about 700 if that, because i think the 990 heads are going to hurt you.
JMO
Zip.
agree on the 990 heads hurting your numbers. what piston are you using to get 13 to one compression? head gasket?
TS1955
03-06-2011, 07:34 AM
My prediction will be 650 to 700 hp.
TS1955
curtisreed
03-06-2011, 09:03 AM
I say 673hp
itsabird
03-06-2011, 04:13 PM
If you will, post the results. i used almost that same combo to tune my chassis, i used a set of 820 ovals with a back yard port job and 2.25 -188 valves, no idea on the number of ponies, but the thing ran dang good.
bixblk
03-09-2011, 07:00 PM
compression helps, but the heads will hurt this combo 689 HP to 700 and 600 to 625 foot lbs
Let us know good luck , it should be a good stout durable motor
hammertime
03-10-2011, 04:53 AM
Its a 461 13.8to1 scat rods and crank srp pistons Gm 990s ported 2.30 in take 1.88 ex comp cam .714 in .680 ex 278 in 282 ex at 50 intake is a ported super vic 1050 domanator on e85 2in into 31/2 headers what do you guys thank
720 peak hp and 675 avg :D
wibberg350
03-10-2011, 02:18 PM
not sure what head i should have used the motor is in a mud drag truck and they have a stock head casting number rule and it has to be a steel head from what i have read the gm squair port heads were the best. i didnt have them flowed but i did cc the and the intake ports are right at 345 let me know what you thank i can do to get alittle bit more out of her im wanting 750
TheRabbit
03-10-2011, 03:39 PM
I'm looking at my dyno sheet from my old 548. It made 793 at 6,700. It was similar to your build, but I did have a set of aluminum heads c&c 'd by RFD. They flowed 400cfm at .800 and I did have a vacuum pump.
I doubt with those heads you're gonna get into the 700's, but I'm not fimilar with them. Even though you have to run iron heads can you run a vacuum pump and a dry sump? Not cheap hp, but you gotta do what you gotta do to win!
wibberg350
03-10-2011, 04:04 PM
no vac pump and must have a wet sump
itsabird
03-10-2011, 04:47 PM
That head may get you close, one of my worries would be the big valve size, 4.280 bore may be a little small for that size valve.
tcarda
03-13-2011, 11:14 AM
I think you will be around 670-680 hp and 570-590 tq, but I think the ported Super Vic is going to hurt you. Thats a big intake for your cu in. A Victor Jr. would be a better choice...IMO.