460 RHS engine build.. dyno tomorrow. - Lateral-g Forums

**Steve1968LS2** · #1 09-27-2010, 06:55 PM

Ok.. so a few days of machine work at Nelson Racing followed by three days of building and I'm dynoing the 460 RHS engine tomorrow at Westech Performance.

Any guesses?

The 454 made 650 there and this one should make a bit more due to the better heads and a slight bump in compression (11.5:1)

It was a very detailed build, we flowed the Mast heads and then modded the valves to give more flow in the low to mid range area.. should be a torquie sucker. We weren't going to the "killer magazine number" but instead stayed with a hyd cam with a rather mild profile (touch bigger than the one in the 454).

ProdigyCustoms · #2 09-27-2010, 07:20 PM

Depends on camshaft?

**Steve1968LS2** · #3 09-27-2010, 07:21 PM

Quote:

Originally Posted by ProdigyCustoms

Depends on camshaft?

247/263 .624 lift on a 114 LSA (installed at 110.5)

ArisESQ · #4 09-27-2010, 07:23 PM

I'll guess it makes around 680 to 690. Which is an absurd amount of n/a horsepower!

Super cool motor. Is it for penny??

**Autokraft** · #5 09-27-2010, 07:25 PM

I'm going with 680

**Steve1968LS2** · #6 09-27-2010, 09:04 PM

Quote:

Originally Posted by Autokraft

I'm going with 680

Great pan.. Tom was really impressed and said he's going to order a couple from you for the shop.

I had to mod yours a bit to clear my front rack.. and I added a bung for an oil tep sender.

I need you to send me a replacement sticker.. had to remove it to weld.

ProdigyCustoms · #7 09-27-2010, 09:14 PM

I might be wrong but I am guessing the 114LC and bigger heads hurt torque. Guess it depends on how sucsessful the low number work was.

What cam was in the other motor?

**Steve1968LS2** · #8 09-27-2010, 09:17 PM

Quote:

Originally Posted by ProdigyCustoms

I might be wrong but I am guessing the 114LC and bigger heads hurt torque. Guess it depends on how sucsessful the low number work was.

What cam was in the other motor?

Just a touch smaller with less seperation due to the cathedral port heads..

The 114 was installed at 110.5 .. should help and the 1 7/8" headers will move up the torque as well.. Pretty sure my last cam (on the 454) was 114 set on a 111.

Too many numbers, can't keep them all in my head.

**214Chevy** · #9 09-27-2010, 07:41 PM

In number terms...I'll say 700 hp. In word play...I'll say it'll fly like a bat out of hell!! By the way it is oh-so beautiful. May I ask, what cfm size throttle body are you using?

**Steve1968LS2** · #10 09-27-2010, 09:03 PM

Quote:

Originally Posted by 509Chevelle

In number terms...I'll say 700 hp. In word play...I'll say it'll fly like a bat out of hell!! By the way it is oh-so beautiful. May I ask, what cfm size throttle body are you using?

On the dyno it will be a FAST 102mm.. on the car it will be TBW 90mm unit that has been custom ported my Mike Norris. Wish it were bigger but it is what it is.