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Topic Review (Newest First)
01-06-2007 10:11 PM
WDCreech quote by madamstn;
The parts are dissapearing, the people that know much are going, chevy still moving on.

What we have now is better than it ever was. Aftermarket blocks in iron and aluminum, Wenzler, Edelbrock. Tiger heads and more, new inexpensive forged and billet cranks w/either small or large main journal to use with Pontiac or BBC rod sizes, performance or hard core race engines from several, Pontiac specific, engine builders. There hasn't been a factory block produced from Pontiac for almost 30 years, but for us enthusiasts, I think it is still "moving on"!

Bill
12-27-2006 12:08 PM
Rick WI Bye
12-27-2006 12:06 PM
curtis73 I moderate over at AF, and if someone brings back a thread more than about 3 months old, the thread gets closed and the latest post gets deleted so it goes back to its place on page 10. We run a darn tight ship over there because we get a high volume of noobs that don't know crap from crisco.
12-27-2006 10:09 AM
machine shop tom
Quote:
Originally Posted by QuenchPiston
I was searching for something kind of different than this thread but I have to admit that it did spark my interest and then I read that b.s. post and well, I just couldn't stand that info especially about the rod stroke ratio. There are some other people that post that pass along info about R/S ratio that is not true. Some hot rodders would read them and possibly miss out on the benefits of R/S ratio as well as other parameters can provide. You know its kind of like this, tell a person building a 383 sbchevy that he should build his engine with 400 rods and an army of people put down that idea stating that longer rods should be used. But on the other hand mention any other engine made that came stock with longer rods and the same army of people dispel the benefits or the purpose of that long rod. I just like to see honest and truthful discussions. And I wholeheartedly agree that you should not remove or edit posts, I never said that.
The fact that that old post hasn't been resurrected tells me that it has run it's course and the bad info it contained has probably been discounted. You don't need to dig up old posts to comment on (you have a habit of doing that, it has been noticed by myself and other mods). Instead, why don't you add something original and useful to the forum?

tom
12-27-2006 09:39 AM
QuenchPiston I was searching for something kind of different than this thread but I have to admit that it did spark my interest and then I read that b.s. post and well, I just couldn't stand that info especially about the rod stroke ratio. There are some other people that post that pass along info about R/S ratio that is not true. Some hot rodders would read them and possibly miss out on the benefits of R/S ratio as well as other parameters can provide. You know its kind of like this, tell a person building a 383 sbchevy that he should build his engine with 400 rods and an army of people put down that idea stating that longer rods should be used. But on the other hand mention any other engine made that came stock with longer rods and the same army of people dispel the benefits or the purpose of that long rod. I just like to see honest and truthful discussions. And I wholeheartedly agree that you should not remove or edit posts, I never said that.
12-27-2006 09:12 AM
Henry Highrise I never could understand why some people look for and dig up old threads......Why don't they just start a new thread? Poncho is right though...if all the post were edited and some deleted etc. then there would be no freedom of speech.
12-27-2006 09:04 AM
poncho62 If we editted posts, it would be a fine line ............many would call that censorship.......We will not be going that route. All information on these forums is voluntary.......How you interpret them is also voluntary.
12-27-2006 08:42 AM
QuenchPiston
Quote:
Originally Posted by poncho62
Credibility is in the eye of the beholder.....Most people can see right through the B.S. posts.............A person in these forums can say whatever they like...............within reason. Whether, what they say is take as gospel, is another thing.

In the case of this thread, the reason that it probably stopped at that point, was that many members saw the B.S. and figured a comment wouldn't do any good, so they let it die.
Yes I can see that but it is not good practice especially if a inexperienced person building a Pontiac stumbles on this thread and does not have enough knowledge to know better. A very knowledgeable member should come by and set it straight or at least the moderator should put out a request that someone fix the information. This forum is claimed to be the largest forum on the net for hot rodders, lets not make it the biggest b.s. site on the net.
12-27-2006 08:25 AM
poncho62
Quote:
Originally Posted by QuenchPiston
However, be careful of this guy since I have read some questionable things about him that I don't know if they are true or false. Perhaps we can get a little info on him and his credibility.
Credibility is in the eye of the beholder.....Most people can see right through the B.S. posts.............A person in these forums can say whatever they like...............within reason. Whether, what they say is take as gospel, is another thing.

In the case of this thread, the reason that it probably stopped at that point, was that many members saw the B.S. and figured a comment wouldn't do any good, so they let it die.
12-27-2006 08:11 AM
QuenchPiston
Quote:
Originally Posted by madamstn
400 hundreds by chevy aren't even like chevy. The connecting rods are short, the engine is a small block. The short rod throughs the piston more heavily into the thrust side wall. Scrap it fast as possible. The only real reference to small block pontiac is crankshaft journal diameter. There is no small block. Parts are expensive. A 455 definetly redlines at 5700. The connecting rod bolts break. That is always the case. None hold at 7000. 3.75 stroke. But it is a torque engine however. What is your rod length on the stroker. What I ask before anything is what is the rod to stroke ratio. What is the rod length center to center,vs; stroke. 1.83 like 426 Hemi is good number. AS you get closer to 2 the engine doesn't have enough vaccum to draw fuel in. It has to have a blower of some sort. Pontiacs all are long stroke. One of the magazines years ago did a article on 455s . 425hp at 5000 rpm.Don't get funny itwill break. Theyused heads off 72 and 73 gto 400's. Gives 10.0 compression ratio. Then you have to cam it. In a transam with a 2.50 differential ratio ford axle, the only place to get 2.50 diff, they were running a TA at 160 mph Of course the distributer, carb jets, and size all had to be tuned together,Not to tough. Pontiac never messed much with their heads. They knew that they could not flow at 7000 anyway. The head casting numbers are on the middle section of the head 7k3 and 96, if I remember correctly. I will take the 455 myself. But I have said about what every one else has. Pontiac is what I do, I will take the 455. I need another one. I don't have a clue on the heads I am the only persion I know who has a set. If I did not have a huge pile of parts, I would never start with pontiac. It is just to expensive. The parts are dissapearing, the people that know much are going, chevy still moving on.
Although this thread originated in 2002, this particular post is the dumbest post I have read yet. It is full of false information. For example: "AS you get closer to 2 the engine doesn't have enough vaccum to draw fuel in. It has to have a blower of some sort." Right! Go tell that one to Ferrari which uses a 2.41 rod stroke ratio in their F1. Read a few of these first and then decide for yourself: http://www.pontiacpower.com/20Myths.htm
However, be careful of this guy since I have read some questionable things about him that I don't know if they are true or false. Perhaps we can get a little info on him and his credibility.
03-15-2006 03:16 AM
malc This is from 2002, just maybe he solved his dilemma.
03-15-2006 12:41 AM
madamstn
sbc 350 swap

400 hundreds by chevy aren't even like chevy. The connecting rods are short, the engine is a small block. The short rod throughs the piston more heavily into the thrust side wall. Scrap it fast as possible. The only real reference to small block pontiac is crankshaft journal diameter. There is no small block. Parts are expensive. A 455 definetly redlines at 5700. The connecting rod bolts break. That is always the case. None hold at 7000. 3.75 stroke. But it is a torque engine however. What is your rod length on the stroker. What I ask before anything is what is the rod to stroke ratio. What is the rod length center to center,vs; stroke. 1.83 like 426 Hemi is good number. AS you get closer to 2 the engine doesn't have enough vaccum to draw fuel in. It has to have a blower of some sort. Pontiacs all are long stroke. One of the magazines years ago did a article on 455s . 425hp at 5000 rpm.Don't get funny itwill break. Theyused heads off 72 and 73 gto 400's. Gives 10.0 compression ratio. Then you have to cam it. In a transam with a 2.50 differential ratio ford axle, the only place to get 2.50 diff, they were running a TA at 160 mph Of course the distributer, carb jets, and size all had to be tuned together,Not to tough. Pontiac never messed much with their heads. They knew that they could not flow at 7000 anyway. The head casting numbers are on the middle section of the head 7k3 and 96, if I remember correctly. I will take the 455 myself. But I have said about what every one else has. Pontiac is what I do, I will take the 455. I need another one. I don't have a clue on the heads I am the only persion I know who has a set. If I did not have a huge pile of parts, I would never start with pontiac. It is just to expensive. The parts are dissapearing, the people that know much are going, chevy still moving on.
01-27-2006 08:50 PM
hank4jc2003
Big Block

I have a 72 with a 350, for now Its cool but when I built it I'm going for a 454 chevy.
05-21-2002 07:44 PM
jeff of nc Theres no substute for cubic inches! Just keep in mind when pricing your parts that the 455 will require a BOP transmission, and good heads flowing heads may be harder to find, but with 100+ extra ci's who cares? My next choice would be the 383, but thats just me, I like something diffrent.
05-21-2002 05:16 PM
lluv2run go for the 383, it runs cooler than the 400, and is much more streetable
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