4 inch bore?

feeds@yuku.com (mikestempest) — Sun, 06 Dec 2009 16:43:53 GMT

Can these engines be bored out to 4 inches? If so, then we could use Chevy 327 pistons with a 230 crank. Thanks, Mike

overhaul kits

feeds@yuku.com (DICKBURNS6fke) — Fri, 04 Dec 2009 13:40:47 GMT

Who sells the most complete and best and least expensive overhaul kits? there is someone on ebay selling them, Kanter,or RPM ?

clifford 4 barrel vs factory 4bl

feeds@yuku.com (87Duker) — Fri, 04 Dec 2009 09:51:10 GMT

any advatages to using the clifford over stock 4bl manifold? I know weight wise but really how much weight savings is there. Flow any better?

Harmonic balancer

feeds@yuku.com (kpayne5) — Thu, 03 Dec 2009 06:00:25 GMT

I saw the pic of the sprint motor on ebay and noticed the balancer. I pulled my engine a few months ago and don't remember it looking like that. My engine is a 67 ZD6 sprint with only the alt bolted on, no power anything, manual 3 spd. I have 2 NOS single groove balancers I was going to choose from to use But maybe I need the right one. What is the pt# I should see on my stock balancer. The other 2 I have are 9783090 and F-1767-2, can anyone ID these.

Thanx KP

Need help with stuck lash adjusters

feeds@yuku.com (Birdguy) — Wed, 02 Dec 2009 19:48:46 GMT

I am in the process of stripping down a head for rebuild and have run into problems removing the lash adjusters. What I have done so far is to soak them down with penetrating oil and work the bodies back and forth with vise grips while hitting the bottom side of the pliers with a hammer. So far I've able to work them about half way out of their seats, but it's a slow and laborious process. All I have to work with is the usual assortment of shop tools. Any suggestions on any other...

contact info?

feeds@yuku.com (87Duker) — Tue, 01 Dec 2009 10:16:28 GMT

any one know who this is or if they know a way to get ahold of him?

http://sprint69.tripod.com/sprint69sohcfirebird/index.html

thanks Kris

Oil filter by-pass valve

feeds@yuku.com (69PMD6) — Mon, 30 Nov 2009 06:49:24 GMT

Something does not look right with the oil by-pass valve in my accessory housing. The spring is not directly under the retainer, it is kind of diagonal and I do not see the valve seat at all. But I do not know what it is supposed to look like. I have tried to attach a picture but it is hard to see. Does anyone know what it is supposed to look like?

Thanks

Accessory housing gasket, camshaft seal

feeds@yuku.com (69PMD6) — Mon, 30 Nov 2009 06:30:33 GMT

Does anyone know where I can get an accessory housing gasket and camshaft seal? I have not had any luck with NAPA, Autozone, Advanced Auto or Carquest locally.

.080 pistons

feeds@yuku.com (ohc4ever) — Fri, 27 Nov 2009 08:07:14 GMT

I see Egge has some .080 pistons, are the cyl walls thick enough to take this??? I have a 250 short block that's already been done .060 with some older Keith Black pistons that I'd rather keep, but the bores have some ring ridge. Pistons are at the loose end of the spec 0.0038 so it probably either needs an .080 over bore or sleeving. Does anybody know if this is an acceptable overbore? Thanks!

Engine Rebuild Close to Maryland

feeds@yuku.com (TMAGS69) — Sat, 21 Nov 2009 14:53:11 GMT

Hello, I live in MD and need a good rebuilder close to my home. I can deliver out of car. Please let me know of any.I have 1969 Sprint Firebird manual transmission.

Finally rebuilding

feeds@yuku.com (kpayne5) — Fri, 20 Nov 2009 06:05:12 GMT

I haven't been here in a long time. I put my '67 LeMans Sprint Conv. in a barn in '04. I had posted asking about an odd knocking noise, just didn't seem like it was bottom end. I went to Spring Carlisle and talked to a pontiac engine guy from PA. He was real interested in doing it, but I couldn't be that far from the engine. Went to the Syracuse Nationals with my '71 ragtop rat (home town) and couldn't stand it anymore. Pulled the engine, took off the head and...

Oil circulating?

feeds@yuku.com (Battery Acid) — Wed, 18 Nov 2009 18:40:47 GMT

Engine starts fine and runs but how do I know I am getting oil to the head. The whole engine is rebuilt but when I shut it down, my oil light comes on, but my dipstick shows that I am more than full. I have the correct amount of oil in the car but am afraid its not circulating. My oil pump is original but was thoroughly cleaned and appears to be working fine. How can I tell I am getting oil. Thankyou

-Wes

Head rebuild advice needed

feeds@yuku.com (Birdguy) — Tue, 17 Nov 2009 17:02:27 GMT

I am finally getting to the point where I need to make serious progress on getting my '67 230 1bbl rebuilt. The bottom end has already been done, but the head has never been touched. After reading on this and other sites how there are so many peculiarities about the OHC head, I want to make sure I get the right guy to do the job properly. Does anyone have recommendations on a proven, reliable shop to do the work at a resonable cost? The postings on this question by others in the past all...

Downgrade before my upgrade

feeds@yuku.com (1969 Pontiac Custom S Sprint) — Thu, 05 Nov 2009 05:47:35 GMT

Hey everyone,
The search isn't working with my browser, so if I'm in the wrong section or if this has already been posted let me know...I have a 1969 Pontiac Custom S Sprint 250 all original with 200,000 miles. I live on Long Island, NY and I'm sure you know what New York City traffic is like. This has been my daily driver for over 6 years now and I ran into a little overheating problem in the city. Since then I have slowly been dropping oil pressure, and I have a feeling...

sort few things out?

feeds@yuku.com (87Duker) — Wed, 28 Oct 2009 17:41:49 GMT

I have a 66 1 barrel motor i believe. Looking at a 67 possibly 4 barrel and I know I have read and there is

two intakes = 1 and 4 barrel
heads = not really sure, is there a difference between 4 and 1 barrel for the heads?
bottom end = sounds like they are all the same
timing cover = heard 66 is one year only?

What else are different between 1 and 4 barrel? rods?

Please let me know. thanks

removing harmic balancer

feeds@yuku.com (DICKBURNS6fke) — Mon, 26 Oct 2009 12:39:13 GMT

Any tips on removing a harmonic balancer

new with ohc looking for help

feeds@yuku.com (87Duker) — Fri, 23 Oct 2009 10:24:22 GMT

I just got a ohc 6 and was told it was a 66 but havent verified numbers yet, It is 1 barrel version. Looking at rebuiling it and want to either turbo or supercharge it. I am fimiliar with the m90s of gtps but think turbo look cleaner and easier to plumb. I plan to install this in a 32 pontiac 5 window coupe hot rod and was thinking of getting 300hp or so out of this combo. I Know clifford makes 4 barrel intake. Any pics of turbo or supercharged set ups? Any thing else i need to...

Basic OHC maintenance

feeds@yuku.com (Nightwatch) — Thu, 15 Oct 2009 15:24:28 GMT

Can anyone explain the basic common trouble points of the OHC 6? Is top end oiling the issue or do the cam and followers where prematurely? If the engine starts to "tick" can any adjustment be made to increase engine life? I have an all stock, 32,000 mi. 232 CI 1bbl that runs great, any maintenance advice for keeping this engine running as long and trouble free as possible would be appreciated.
Thanks,
Kirk

New 'H' grind cams

feeds@yuku.com (OHCSource) — Wed, 07 Oct 2009 16:46:56 GMT

We're thinking of having some 'H' performance cams built. Let us know if you would be interested?

4-BBl Intake Manifold Casting Numbers 68-69

feeds@yuku.com (BirdOHC6) — Mon, 05 Oct 2009 05:49:29 GMT

Guys, I need to know the casting numbers on the Intake Manifolds for a 68-69 Sprint Motor. Since I plan to change my Firebird's 69 250 1bbl to a 4bbl. And as far as I know the 66-67 intake manifolds wont fit the 68-69 motor properly. Or am I just mistaken?

What are the modifications that I need to do in order to convert in to a 4bbl? Do I need to reroute the metal fuel lines, change accelerator linkages? Change to the sprint spec cam since there wont be much of an improvement...