My 67 Chevelle 300

[milner351]

Re: My 67 Chevelle 300

There are a plethora of books about "how to rebuild XXXXX engine".

There must be a dozen on the small block chevy.

I have one that's more about blue printing than just generic building - it's quite good - I'll be damned if I can remember the name of it!

I would say get yourself a service manual covering the engine you want to build - that will be a tremendous resource as far as clearances, assembly methods, torque values, etc.... then a more general rebuilding book - and of course ask questions here and you'll be all set!

[jerrys96lt4]

Re: My 67 Chevelle 300

Six cylinders rule when I was a kid we lived behind a dirt track in Charlotte NC Metrolina speedway (God rest Her soul).And we we haul ass over there just to watch the semi modifieds Think 67 68 Mustangs and 65 Falcons and 67 68 Camaros all with built to the hilt 6s man they sounded soooo good and ran fast as stink. :'( man I miss that sound

[DanStokes]

Re: My 67 Chevelle 300

Speaking of sixes - I have a line on a couple of 14:1 circle track sixes from a guy who used to race them. Nothing final yet, but I HAVE to consider them carefully. I know a guy who knows the guy kind of deal......... If they are what I think they are I'll have a spare lump port head - I'll let y'all know -

Dan

[doc]

Re: My 67 Chevelle 300

Very sweet car......like the idea of keeping it a six'er!!

[67pete300]

Re: My 67 Chevelle 300

Speaking of sixes - I have a line on a couple of 14:1 circle track sixes from a guy who used to race them. Nothing final yet, but I HAVE to consider them carefully. I know a guy who knows the guy kind of deal......... If they are what I think they are I'll have a spare lump port head - I'll let y'all know -

Dan

Uh, definitely let me know. I'm a bit scared about the 14:1 bit though. Did they mill the head to get that high?

[DanStokes]

Re: My 67 Chevelle 300

The head on my 250 is cut about 0.070. It's a bit more than ideal (0.060) but it needed a bit of a cut to flatten it when I got it and it was cut 0.060 when originally built. My current head on your short block will yield something like 9.5:1. The 14:1 motors have WAY lumpy pistons to eat up the combustion chamber and achieve that number. It would be cool to buy the whole motor even if it needs to be freshened up as all the bits are there to make the CR work - pistons, rods, cam, etc, etc. We'll see what works out here.

BTW - where are you located now? Hope you're within traveling distance - love to hook up.

Later
Dan

[67pete300]

Re: My 67 Chevelle 300

A bit further away, but nothing terrible. Just south of DC in VA.

[DanStokes]

Re: My 67 Chevelle 300

I have old friends in Alexandria, so I now have a double excuse to head up there. Also, NARider (Todd) and the lovely Debbie are in Fredricksburg, so that's a triple excuse.

Dan

[yogreasygramma]

Re: My 67 Chevelle 300

Man that is an awesome, beautiful Chevelle!!!! I love those old virgins! ;D

[67pete300]

Re: My 67 Chevelle 300

Sweet craigslist score! In my own backyard!



Picked this up for $100. Got so excited I didn't look at the bottom of the intake until I got home. :'(



The bottom of the heat box on both sides is gone. Bummer. The 3 holleys and linkage might be worth the 100 bones themselves. The Offy intake is also plumbed for nitrous (which I don't really care about but gives the whole setup even more character.)



I don't know what I'll do with it yet, but I know three Holleys with those hats would look killer! I imagine it would be a pain to make it all work right.

The guy also had a "hot" 250 I could have picked up for another $100, but it had been sitting outside and all the "hot" details couldn't be verified visually. He is going to try to find some paperwork and maybe I'll go back and pick that up too. It is supposed to be a 194 head (which is good) and have 30 over 307 pistons (also potentially good) but his story didn't add up in spots and I was a bit suspect. I don't think it's going anywhere if I want to go back.

[milner351]

Re: My 67 Chevelle 300

A talented person at the helm of an AC tig welder can fix that manifold....

great score!

are the throttle shafts of the carbs pretty tight?

[67pete300]

Re: My 67 Chevelle 300

This is as close as I have now, can get some closer ones later.

[milner351]

Re: My 67 Chevelle 300

Are the holes only in the "heated floor" of the intake?

If so - if you don't run the heat - they maybe nothing to worry about - as long as there are not also holes leading into the intake passages.

With some clean up - a good tig weldor could fix those for you.

[67pete300]

Re: My 67 Chevelle 300

I haven't had any time to look closer to see if there are holes through the intake part yet. At first glance it just looks like they are in the heated bottom part. I'm not a welder, but I can't imagine how you could just weld up the bottom of the heat void without filling in the whole void itself (which might be an ok option.) Or I could just run it without heat. But everyone says you need heat.

[67pete300]

Re: My 67 Chevelle 300

Haven't posted much lately. The project has been moving at a glacial pace. But I just took two major steps and things should start picking up.

Got the 250 torn down and to the machine shop:







Just gave the machinist a deposit for a pretty basic bottom end rebuild. I am having him zero deck the block for whatever compression I can get. And I will use a Comp Cam that is a pretty mild grind, but will still be light years better than the stocker.

But here is the real kicker: I just arranged to have one of these built for me.





Larger intake/exhaust valves, intake head bolt bosses removed, lumps installed, spring upgrade, lightweight retainers, stainless valves, handwork in the valve area. Lots of coin, but should really bring this engine to life. I was going to pay the machine shop five or six hundred to rebuild a stock head anyway, so I figured I might as well go the extra mile and get the real deal.

So it will still be a month or so before I get the head and bottom end back, but now I am focused on all the other stuff I need to chase down. And my wife is focused on the rapidly depleting bank account...