Time for an engine rebuild! - Chevelle Tech
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post #1 of 34 (permalink) Old Aug 30th, 19, 1:05 AM Thread Starter
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Time for an engine rebuild!

Iím rebuilding my 496. It had rectangular port Chevy heads, mechanical roller cam, Crower crank & rods and Wiseco pistons. I originally built it in about 1988, itís a four bolt 445 block. This motor dynoed at 598hp and 592tq on pump super, it was all over by 5500 RPM. An original Crower lifter, from before they started putting wheel lube holes in them broke. Of course the engine needed to be torn down to get out all the junk. There wasnít much and the filter was clean but I didn't want to chance damaging the crank. It wasnít, itís perfect.

Iím having the custom Bullet cam re-ground for hydraulic lifters, itíll have .650 lift. Heads will be oval port Brodix. Lifters will be Isky needle free bushing lifters.

My machinist, Glenn at B&B Machine in Oceanside N.Y. is running the block through the washer, doing a clean-up hone, installing cam bearings and fitting new rings. A Shumann oil pump, new bearings, timing chain, gaskets-this will be about the 15th engine Iím building. While I was pretty happy with itís power before, Iím told that I should pick up 80hp with the modern heads, Iíll be happy with 50.
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post #2 of 34 (permalink) Old Aug 30th, 19, 6:35 AM
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Re: Time for an engine rebuild!

Sounds like a nice combo!

Race rites?
What intake?

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post #3 of 34 (permalink) Old Aug 30th, 19, 8:28 AM Thread Starter
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Re: Time for an engine rebuild!

yessir, Race Rites.

Every component in this resulted from conversations with their makers.

I'm even replacing my headers, the current ones are Hooker SC Chevelle headers, modified by George Kryssing (Papa Kook) back in the day to fit better. ARH has a 2" x 3" Monte Carlo specific stainless header.
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post #4 of 34 (permalink) Old Aug 30th, 19, 8:32 AM
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Re: Time for an engine rebuild!

Sounds like a nice combo. Should be a tire fryer.

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post #5 of 34 (permalink) Old Aug 30th, 19, 8:38 AM
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Re: Time for an engine rebuild!

Nice Build! Post some pics when you get it done!!!!
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post #6 of 34 (permalink) Old Aug 30th, 19, 9:00 AM
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Re: Time for an engine rebuild!

Good to hear Glenn is still at it. My dad raced with Glenn and Henry back in the 80ís and they did a couple engines for me in the mid 90ís. I think I last saw Henry maybe 5 years ago.

Ray


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post #7 of 34 (permalink) Old Aug 30th, 19, 9:06 AM
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Re: Time for an engine rebuild!

And you will loose about 70 pounds from the front with the Brodix heads. I think you will also like not having to adjust the valves. Should be a good build keep us posted.
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post #8 of 34 (permalink) Old Aug 30th, 19, 9:22 AM
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Re: Time for an engine rebuild!

650+ HP in a beautiful Monte !

NICE

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post #9 of 34 (permalink) Old Aug 30th, 19, 9:57 AM Thread Starter
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Re: Time for an engine rebuild!

Quote:
Originally Posted by bracketchev1221 View Post
Good to hear Glenn is still at it. My dad raced with Glenn and Henry back in the 80ís and they did a couple engines for me in the mid 90ís. I think I last saw Henry maybe 5 years ago.

Yeah, they're both still at it.


Glenn is running a third gen Camaro and Henry is still welding and grinding ports, he'll do some port matching for this project.

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post #10 of 34 (permalink) Old Aug 30th, 19, 9:58 AM Thread Starter
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Re: Time for an engine rebuild!

Quote:
Originally Posted by Lew540 View Post
And you will loose about 70 pounds from the front with the Brodix heads. I think you will also like not having to adjust the valves. Should be a good build keep us posted.

Hey Lew, the heads I've removed were aluminum.


Quote:
Originally Posted by nashville beth View Post
650+ HP in a beautiful Monte !

NICE

Thanks!

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post #11 of 34 (permalink) Old Sep 7th, 19, 1:07 AM Thread Starter
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Re: Time for an engine rebuild!

Small update, the Brodix oval port heads are 270cc intake ports then they jump to 332cc. 270 is a bit too small for my engine and 332 is a bit too big, I'm shooting for 300cc.

AFR has a 300cc oval port head that's CNC ported. It's a bit more money but it's right where my engine needs it. And with a little less cc in the chamber should put my compression ratio a hair below 11:1. Perfect.
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post #12 of 34 (permalink) Old Sep 7th, 19, 1:16 AM
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Scott Foxwell says the 300cc oval ports have turbulence in the port. The 290’s flow enough to make 700 hp and make better power from what I understand. Don’t get hung up on the port size as much as size/flow. Also what rpm do you want peak power?
I would also look at a different piston with a modern ring pack, like the Mahle power pack pistons.
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post #13 of 34 (permalink) Old Sep 7th, 19, 6:54 AM
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Re: Time for an engine rebuild!

Quote:
Originally Posted by paul bell View Post
yessir, Race Rites.

Every component in this resulted from conversations with their makers.

I'm even replacing my headers, the current ones are Hooker SC Chevelle headers, modified by George Kryssing (Papa Kook) back in the day to fit better. ARH has a 2" x 3" Monte Carlo specific stainless header.
I just installed the Hooker SC 2455 on my '70, the driver's side rubs the steering column depending on throttle position. I suspect you noticed the same thing on your '71. I'd love to hear what you find on the ARH as they are very pricey but claim they are specific for Monte Carlo.

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post #14 of 34 (permalink) Old Sep 7th, 19, 9:08 AM
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Re: Time for an engine rebuild!

What are the heads youíre taking off?

Ray


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post #15 of 34 (permalink) Old Sep 7th, 19, 9:16 AM Thread Starter
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Re: Time for an engine rebuild!

Quote:
Originally Posted by pockets View Post
Scott Foxwell says the 300cc oval ports have turbulence in the port. The 290ís flow enough to make 700 hp and make better power from what I understand. Donít get hung up on the port size as much as size/flow. Also what rpm do you want peak power?
I would also look at a different piston with a modern ring pack, like the Mahle power pack pistons.

Turbulence in the port, eh? OK, I'll look into the 290cc head. 700HP? That'd be nice.


Quote:
Originally Posted by dragginwagon406 View Post
I just installed the Hooker SC 2455 on my '70, the driver's side rubs the steering column depending on throttle position. I suspect you noticed the same thing on your '71. I'd love to hear what you find on the ARH as they are very pricey but claim they are specific for Monte Carlo.

It's been a lot of years since I had the header work done, I don't remember why modifications were needed.


And yes, the AHR headers are expensive, they better be perfect in every way with good ground clearance and access to spark plugs.

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