And Penny just keeps on changing... - Page 30 - Lateral-g Forums

Vegas69 · #**291** 03-31-2010, 08:04 AM

Duh...it's early. Let's see them dyno numbers and video.

**fleet** · #**292** 03-31-2010, 08:16 AM

They show a 5.3L being 325 cid and you made 499 hp which is approx 1.54 hp per cu in.

If you could do that again you'd make 697 hp.

**214Chevy** · #**293** 03-31-2010, 12:38 PM

Quote:

Originally Posted by Steve1968LS2

Built the engine today over at Turn Key Engine Supply..

Penny's new alum 454:

4.185 bores using Darton's MID sleeves. Wiseco pistons.

454 Ready to head off to Westech for dyno runs on Wednesday.. any guesses? 72cc TF 235 heads with 9.235 deck height and Cometic gaskets should yield 11.3:1 compression.

Will start the install on Friday. The Canton oil pan is off at our tig welder getting a little mod.

Maaaaaaan, that engine is beautiful!! Some of us will kill for an engine like that.

**Steve1968LS2** · #**294** 03-31-2010, 05:46 PM

Today was dyno day.. my guess (what I hoped for) was 650/620.. turned out to be a decent guess.

While the cam we're running is large compared to other LS cams it's not that big considering the displacement of the engine. COMP said I could pick up a bunch of tq/hp by moving to a more aggressive 112 LSA, but drivability and idle would suffer.

Since I don't want too much power and I want to keep my street friendly drivability we settled on a 114 LSA.

Fired right up.. idle was good and after some break in time Westech made some pulls and adjusted the A/F..

Best pull was 650 hp and 613 tq.. but the best part is that even down at 3500 rpm it's already making 550 lb/ft. The torque peeks at around 4600 and is still well over 500 up at 6500. That's the kind of torque curve I was looking for - flat and a bit weighted to the bottom/midrange area.

Friday we start installing.. this engine should serve me well while I CAREFULLY build my RHS blocked / Mast Motorsport headed 460 engine.

Ready to rumble:

Corrected graph: (correction factor was 1.042ish)

**Steve1968LS2** · #**295** 03-31-2010, 05:49 PM

Quote:

Originally Posted by compos mentis

They show a 5.3L being 325 cid and you made 499 hp which is approx 1.54 hp per cu in.

If you could do that again you'd make 697 hp.

Law of diminishing returns...

Speedster · #**296** 03-31-2010, 05:50 PM

Wow Steve. That looks great.

Nice torque numbers and curve. That'll be a blast in Penny...

Gandalf · #**297** 03-31-2010, 06:06 PM

"Best pull was 650 hp and 613 tq.. but the best part is that even down at 3500 rpm it's already making 550 lb/ft"

Nice numbers Steve - Big Block numbers for sure. Now we will really get to see Penny's suspension and brakes working-it-out on the track!

**Steve1968LS2** · #**298** 03-31-2010, 07:14 PM

Here's a little video for you guys.. turn your speakers up and rock out to the LS goodness..

https://www.youtube.com/watch?v=a6daS8Fae4k

nvr2fst · #**299** 03-31-2010, 08:16 PM

Nice pull Steve. Race Engine Development does some nice work on sleeving.. hey. Now you can have all the future power adders you want for next years rebuild LOL. What ever happened to the RHS block?

**fleet** · #**300** 03-31-2010, 08:24 PM

Great tq numbers at 3500.

You mentioned doing a 460.

What will it be going into?

Similar specs to the 454?