there's no replacement for displacement

[mjeff87]

Helped my other neighbor wrench on his '68 Chevelle today, in the rain. He's been building it for the last three years, full frame-off restoration. The only thing left on it original is the door glass and the roof. He's got a 427 bored .030 over, and it's a monster. We yanked it today to replace the RMS and install a new Moroso oil pan. Fun stuff.....here's a couple pics for y'all to enjoy. I'll get some better ones when he has it out when the sun is shining.

 

Jeff

 

Starting out:

 

Image Not Found

 

Pulled:

 

Image Not Found

 

Image Not Found

 

Image Not Found

 

On the stand (praying it doesn’t snap the stand in half):

 

Image Not Found

 

Bottom end:

 

Image Not Found

 

Three hours later, all back together…..in the rain:

 

Image Not Found

[DirtyComanche]

I've always loved those cars.

[beaterjeep]

WOW, beautiful car. :drool: I wish I had kept the 70 LS6 chevelle me and my dad had and built. That thing was a beast. Although I'm willing to bet that that one could give my old one a run for the money.

[mjeff87]

He's spent more jack on that car than I have hairs on my head and as many hours of wrenchtime.

 

It'll pass everything but a gas station (actually racing gas)......13.5:1 compression :eek: : . That starter you see is a custom unit, super gear reduction, 'bout $200. Regular starter won't even crank it.

 

Had an 1150 cfm Dominator on it, but it was a tad too much carb. He swapped it down to a 1050 LOL. There's so much cam in it (fully girdled rocker bridges/studs) he barely has vaccuum, so he plumbed the fuel pump to run off the power brake booster...somehow.

 

And a 5200 rpm stall speed converter :chillin:

Jeff

[DirtyComanche]

And a 5200 rpm stall speed converter :chillin:

Jeff

 

 

 

Good grief. What's redline? Must not be very streetable.

[beaterjeep]

SO....I take back my previous comment. He would prolly beat my old one, but I'd maybe, maybe be able to give him a run. I don't even remember the specs on my old one, but I do remember that the local dragstrip banned us from running it unless we put a rollcage in it.

[DirtyComanche]

A rollacge is needed one you break into 11s on a NHRA track, IIRC.

 

 

 

But, uh, I probably have that wrong.

[pingpong]

A rollacge is needed one you break into 11s on a NHRA track, IIRC.

 

 

 

But, uh, I probably have that wrong.

 

That sounds about right... The rules get pretty complex as you go faster

 

 

 

BTW jeff see what I picked up :D

[Eagle]

There's so much cam in it (fully girdled rocker bridges/studs) he barely has vaccuum, so he plumbed the fuel pump to run off the power brake booster...somehow.

You may have that reversed, I think. Assuming he's still running the fuel pump that bolts to the block and has an arm that rides the camshaft, that's a mechanical fuel pump and there's no way it can or would need to run off the brake booster.

 

However, if the engine produces no vacuum, the brakes wouldn't get much boost. Back in the days of vacuum-operated windshield wipers (probably most of you are at least a generation too young to remember such, but they were still around in 1968), most mechanical fuel pumps had a secondary upper section that was a vacuum pump, for the purpose of pulling vacuum to make the wipers wipe. I suspect he has the brake booster connected to the vacuum pump section of the fuel pump to make the brakes work.

[feerocknok]

Freaking wonderful. Can you explain the thing the engine hoist is connected to for me?

[DirtyComanche]

However, if the engine produces no vacuum, the brakes wouldn't get much boost. Back in the days of vacuum-operated windshield wipers (probably most of you are at least a generation too young to remember such, but they were still around in 1968), most mechanical fuel pumps had a secondary upper section that was a vacuum pump, for the purpose of pulling vacuum to make the wipers wipe. I suspect he has the brake booster connected to the vacuum pump section of the fuel pump to make the brakes work.

 

 

My uncle has a early 60's/late 50's chevy apache. It had the origonal vacuum operated wipers. The would operate at different speeds accodring to the throttle postion, engine RPM, and load. Pretty useless stuff if you live in an area that it rains 200+ days a year. :roll:

[mjeff87]

Freaking wonderful. Can you explain the thing the engine hoist is connected to for me?

 

It's an aluminum plate that he made up, has 4 holes that match the carb studs in the intake manifold. Three holes in the piece welded to it to put the hoist hook thru, depending on the engine's COG. Pretty trick. I'll see if I can get a pic of it by itself.

 

Jeff

[mjeff87]

You may have that reversed, I think. Assuming he's still running the fuel pump that bolts to the block and has an arm that rides the camshaft, that's a mechanical fuel pump and there's no way it can or would need to run off the brake booster.

 

 

I probably do. He mentioned it, and the way he described it didn't sound like it made sense to me. But I do remember him saying he doesn't have power assist brakes (even though there's a booster there) :dunno:

 

I'll quiz him on it the next time I see him.

 

Jeff

[pingpong]

Those plates are available through summit or jegs, they even have them for efi ford motors... they are pretty trick

[Pete M]

I got one of those plates at harbor freight.

[Oizarod115]

He's spent more jack on that car than I have hairs on my head and as many hours of wrenchtime.

 

It'll pass everything but a gas station (actually racing gas)......13.5:1 compression :eek: : . That starter you see is a custom unit, super gear reduction, 'bout $200. Regular starter won't even crank it.

 

Had an 1150 cfm Dominator on it, but it was a tad too much carb. He swapped it down to a 1050 LOL. There's so much cam in it (fully girdled rocker bridges/studs) he barely has vaccuum, so he plumbed the fuel pump to run off the power brake booster...somehow.

 

And a 5200 rpm stall speed converter :chillin:

Jeff

 

:eek: :eek: :bowdown:

 

and what exactly does 5200 stall speed converter mean??

[87manche]

it means taht it's a freaking drag car.

stall speed in an auto trans is where the motor will rev too before the car is forced to move, or the RPMs will stop increasing. So a crazy high stall speed lets him rev the motor up to about 5K or so, with the brakes on.

Release the brakes and all that horsepower hits at once, launching that thing like a freaking rocket I bet.

[mjeff87]

ayup.....

 

Think of it in terms of a manual tranny, and dumping the clutch. Get the engine in it's torque peak (or rather HP, but that's another converssation altogether), and dump it.....the stall speed on the TC accomplishes virtually the same thing.

 

That SS isn't very streetable, to say the least. He's had it out maybe three times around the neighborhood, and 2X it died on him (both ignition-related, he's got no love for MSD at the moment).

 

He lives about 1/8 mi away from me, as the crow flies. When he starts that thing up in his driveway, dishes rattle in my cupboards

 

Jeff

[feerocknok]

I'll have to get one of the hoist thingies for my next v-8 project.

 

I'd love to see that thing move. Chevelle numba one car!