jerrya

I just got my 6 liter swap done and took it for the first drive. Its a stock L96 , 9.6-1 comp, with a 237/245 @ .050 cam, morel lifters, Holley dual plane, 1 3/4 headers and my old pro-systems 780. I have 91 octane in the tank now but am thinking I could even run mid grade. I have the timing set at 29 total right now.
My first impressions of this engine are, where is the torque. lol I had a 600-650 hp 496 bbc in the car before.

ZONES89RS

iTrader: (25)

What converter and gearing? Those things can make torque feel lower if it isn't flashing I to the power band and fighting tall gears.

I would run mid grade(89) if you can. If it diesels down you will know when you cut it off.

Bumping the timing is going to help as well. Try 34 and creep it up a touch from there if you can. That thing may like 36 and that's where the torque will start coming in higher with the HP.

jerrya

3.73's with a 5 speed tremec
I didn't expect it to have the torque the big block did. It is just a lot different going from that to a small cube engine. I will play with the timing too.

ZONES89RS

iTrader: (25)

Yea, it won't make big block power, but it will try!

speedtigger

iTrader: (16)

In short, your torque went out the window with your camshaft choice. Get yourself a cam that is about 10 degrees smaller with the right valve timing/events and that thing will come back to life.

Doug G

That cam needs more compression

jerrya

The cam was spec'd by Chris Straub. He has never done me wrong before

speedtigger

iTrader: (16)

He is the real deal, no doubt. But, in this case he may could have done better. What are the full specs? ICL? LSA? Are your pistons fly cut? What is this thing in? What is the weight?

3pedals

iTrader: (3)

I respect CStraub as well, but I am shocked that he specd you a 237* intake lobe for a 9.6:1 squareport LS.
I tan 235* intake lobe on a 6.0 squareport motor that peaked at 7500!!!

VLS1

7500 rpm peak?! Out of everyone in this forum that needs to advance their camshaft, this is taking it to a whole other level of retardation!

3pedals

iTrader: (3)

No retardation here.
https://ls1tech.com/forums/carburete...gine-dyno.html

speedtigger

iTrader: (16)

You might think so, but unlike a lot of other guys cars, Barret's car worked. To the tune of 130 MPH trap speeds.

VLS1

Looks like that exhaust lobe was carrying power a long way out, strong torque also.

3pedals

iTrader: (3)

My point is the cam should be 10-15 degrees shorter on the intake and 10 shorter on the exhaust to get any kind of torque feel.
My engine made sic hp and tq, but driving it felt torqueless untill 4500ish

speedtigger

iTrader: (16)

What was the ICL on that cam Barrett?

3pedals

iTrader: (3)

It was installed at 106 as per BRE who spec'd it

jerrya

109 with 105 icl. Pistons are not cut and are close on the intakes

Guys I have only had the car out once without playing with the carb and timing yet. I never expected it to have the torque of the big block. It actually ran pretty dam good for the first time. I went 29 degrees on the timing to be conservative. I am old school chevy so this engine is a bit foreign to me as far as tuning goes.
One thing I have to try and correct or improve is the valve train noise. I read about it while putting this engine together but figured it was the same as the bbc guys complain about their Morels. I had Morels in my 496 and they made a bit of noise, never bothered me, but this thing is quite loud.
65 Beaumont , about 3500lbs

VLS1

130mph pushing what raceweight though?

3pedals

iTrader: (3)

My car ran 130 @ 3505lbs with the engine in that link

speedtigger

iTrader: (16)

Those specs in the calculator show:

IVO is 13.5 ° BTDC ( - indicates ATDC)
IVC is 43.5 ° ABDC
EVO is 55.5 ° ATDC ( - indicates BTDC)
EVC is 9.5 ° BBDC
Overlap is 23 °

13.5 degree IVO on square port heads without fly-cutting? I am shocked to hear that cleared.

Great looking Beau! We don't see those here in the states.