Guess the horsepower on a little pepped-up 390....

[blykins]

Been thumbing through the lobe catalogs, looking for the next iteration.  My goal this time around was to go on the lazy side of things.  The next camshaft will be a little more aggressive and I think it will add quite a bit of horsepower.  This cam has a whopping 93 degrees of overlap, but the overlap was an undesired byproduct of the lazy lobes. 

[plovett]

Any chance of a different intake manifold for the next iteration?  Not dogging the Tunnel Wedge.  I have one, but haven't tried it yet.  Even if you can't get a 2x4 Blue Thunder, maybe a 1x4 intake?  Eddy RPM?  or???

just wondering,

paulie

[ec164]

Nice job Brent, sounded nice too, will be interesting to see and hear difference in camshaft change! Captain Blair's experience was mighty close(under by 2 ponies) in the corrected #s, with correct RPM! Look forward to next iteration............Al

[Drew Pojedinec]

Any chance of a different intake manifold for the next iteration?

I suspect a huge part of this endevour was aimed at high rpm testing of the rocker arms.
As such I think the tunnel wedge is probably not the worst  choice, at least in regards to breathing ability. Certainly not limited there.

[plovett]

Neato!  That's an overperforming 390, for sure.  And most importantly, you verified your theories on FE hydraulic roller valve train control.  I am sure that will pay dividends on many future builds.

paulie

That's what I said. 

[blykins]

Any chance of a different intake manifold for the next iteration?  Not dogging the Tunnel Wedge.  I have one, but haven't tried it yet.  Even if you can't get a 2x4 Blue Thunder, maybe a 1x4 intake?  Eddy RPM?  or???

just wondering,

paulie

I don't want to change more than one variable at a time.  The goal really isn't to see how much power I can make, or else I would have went with 14:1, more head work, etc.  The goal is to test the hydraulic roller cams at higher rpm.  So far, we're on target and need to change a variable or two and hit it again. 

[plovett]

Any chance of a different intake manifold for the next iteration?  Not dogging the Tunnel Wedge.  I have one, but haven't tried it yet.  Even if you can't get a 2x4 Blue Thunder, maybe a 1x4 intake?  Eddy RPM?  or???

just wondering,

paulie

I don't want to change more than one variable at a time.  The goal really isn't to see how much power I can make, or else I would have went with 14:1, more head work, etc.  The goal is to test the hydraulic roller cams at higher rpm.  So far, we're on target and need to change a variable or two and hit it again.

Makes sense.

[bsprowl]

My guess of 550 at 7000 (top of page 5) was as close as well.

[blykins]

Guys, I put this engine up for sale in the vendor classifieds.

[Dumpling]

What sort of vacuum would this engine produce for power brakes?

[blykins]

What sort of vacuum would this engine produce for power brakes?

None.

But that’s what vacuum reserve canisters are for.

[Dumpling]

Honestly have never found a good substitute for engine vacuum.  Have put in a hydroboost but still not the same.

Thanks

[TJ]

If you want the engine, I wouldn't necessarily let lack of vacuum be a deterrent.  Diesel cars/trucks use either vacuum pumps or hydroboost with great results.

[blykins]

The mule is sold.

[turbohunter]

Well that was fast. Congrats