cilinderhead question

[PRH]

Deleted...... posted in wrong thread.

[rustbucket79]

Since the angle plug 492 was an over the counter offering only, I would surmise they would be even harder to find than a 292 casting. I’ve seen 1 pair of the angle 492’s in my 30+ year career in the engine industry.

I guess you don't know very much about the availability of cast iron small block Chevy heads; the 292 heads were only offered over the counter and only with angled spark plug machining. They probably had less than a 100th the amount of what the production of 492's were. The 492's came machined from General Motors for either angle or straight spark plugs and a decent cylinder head machinist can change 'em either way.

The angle plug 492's were even plentiful in the late 70's and 80's.

So exactly which model car came with angle plug 492’s? I’m well aware that the 292’s were never installed on a car. When was the 492 angle plug last offered?

[Belgian1979]

A bit off topic but wasn't the 492 a fuellie head?

[Walter R. Malik]

A bit off topic but wasn't the 492 a fuellie head?

YES ... the straight plug version came on production vehicles. The angle plug version never came on a production vehicle, (as I wrote in a past post here saying NO angle plug heads ever came on any mass produced vehicle), however, those 492 castings were produced at least a 10,000 to 1 compared to the 292 castings; the 492 angle plug machining at least 100 to 1 more than the 292's.

rustbucket79 is just being argumentative or he does not comprehend very well; as it was NEVER said the angle plug versions of the 492 castings came on any vehicle; there were simply many more in circulation than the turbo heads.

[1980RS]

My 062 Vortec heads are light years ahead of my old 292 heads no question about it.

[Belgian1979]

My 062 Vortec heads are light years ahead of my old 292 heads no question about it.

I'm sure there are better heads out there, but there was something about those 292 heads in my car. The engine had pistons with a flat dome in it, the 292 heads which seem to have had some porting done to it, but not extensively and an unknown mechanical roller cam with Holley 750 and a victor jr. It was a dog off the line with the 3.08 rear end and the Muncie M22 in front of it, but once above 3000 rpm, boy it went like crazy to over 6.500 rpm.

[Walter R. Malik]

My 062 Vortec heads are light years ahead of my old 292 heads no question about it.

I'm sure there are better heads out there, but there was something about those 292 heads in my car. The engine had pistons with a flat dome in it, the 292 heads which seem to have had some porting done to it, but not extensively and an unknown mechanical roller cam with Holley 750 and a victor jr. It was a dog off the line with the 3.08 rear end and the Muncie M22 in front of it, but once above 3000 rpm, boy it went like crazy to over 6.500 rpm.

The 292 heads were also used for years on NASCAR CUP engines in the later 70's and early 80's; Ported, they were in the 300 cfm range at under a 200 cc intake port volume. They are a good head but, thin in places.

[1980RS]

My 062 Vortec heads are light years ahead of my old 292 heads no question about it.

I'm sure there are better heads out there, but there was something about those 292 heads in my car. The engine had pistons with a flat dome in it, the 292 heads which seem to have had some porting done to it, but not extensively and an unknown mechanical roller cam with Holley 750 and a victor jr. It was a dog off the line with the 3.08 rear end and the Muncie M22 in front of it, but once above 3000 rpm, boy it went like crazy to over 6.500 rpm.

I can understand that for sure. My Vortec's and 292's had the same amount of work done to them, the Vortec heads are second quicker and 6 to 7 mph faster and both were on flat top piston 406's with the same cam. I have run 2 set of Bowtie heads that have run very well also. Anything can be made to run well if you want to put in the work to get the performance out of it.

[canuc]

Belgium79 sounds like your car had some good pieces installed . 292 heads and a 22 transmission were the good stuff in 1980s not with 3.08s unless it was a highway long track car . Pretty cool that you had a dealer that built the car with dealer order parts like that

[Belgian1979]

Belgium79 sounds like your car had some good pieces installed . 292 heads and a 22 transmission were the good stuff in 1980s not with 3.08s unless it was a highway long track car . Pretty cool that you had a dealer that built the car with dealer order parts like that

Yes, originally I was set on sticking with the engine and just going to a 4.11 rear, but the first thing that I noticed was the wear in the cyls, so it needed to be rebored. Then one of the heads were cracked and I was advised not to put money in them. Overall it was cheaper to just build from scratch and make what I really liked. Unfortunately with the BS around tech inspection with oldtimers things caught up with me.

[Belgian1979]

How much is the 882 head's chamber volume? 76cc?