3 yrs ago, had my engine rebuilt. The crank broke behind the timming chain on the snout I had just over 10k on the engine in this time, so its not uder warranty. I just purchased an eagle crank 4340. Now here's my question. On the dyno, I had just under 300rwhp. I have a paxton sn2000 that i get 8spi out of. Now, I also have a nos kit for anticipation of a 50 -75 shot. I was told my engine had the hi performance chevy rods. The rods are thicker on one side that the other, but I have no way of knowing how to ID the hiperfomrance rods (which I think are the pm rods) as compaared to the standard sbc rods. The rods do not have ARP bolts and I question the integrity of the person who built my engine???? If I do use these rods again, I will be using arp bolts!

So can you guys help me out so I can identify which rods I acutally have adn if they are safe to sustain up to 375-400rwhp.

I have been trying to post pics but can't figure it out? here is a link on thirdgen with pics

http://www.thirdgen.org/techbb2/show...4&goto=newpost

 

I would eliminate the risk factor in this situation and invest in some inexpensive rods like eagles H beams. Its just not really a part of the motor where you want to skimp on if your looking to go anywhere but stock.

 

I agree with Rodrigues. At the very least, a set of bushed Scat I beams can be had for around $200 dollars and they can take 400 rwhp with relative ease. Don't scrimp on the bolts though, since they hold everything together. Just out of curiosity, what kind of combo were you running? 290rwhp with a blower seems kinda low.

 

I agree, unless it's a V6. I ran my PM rods up to 540 Hp with ARP bolts FWIW. I now have Eagle Hbeams

 

Yeah, his sig on the 3rd gen board says it's a 91Z with a 350, but I was wondering what kind of heads and intake and other whatnots he was running.

 

The low hp is a LONG STORY! This my explain the hp story but that for now is not the issue at hand. http://web.camaross.com/forums/showthread.php?t=41102 I do have AFR 190 heads, LPE 213 cam recenlty changed from the zz3 in hopes to change the low hp..did not work

What is, Need to know what rods i have and if these will be strong enough?

 

I dont know what rods you have but PM rods with arp bolts will handle the power (375-400) you are talking about.

 

They look like the PM rods to me, if you want to know for sure take one of the end caps off and look at the surface where the end cap mates to the main body of the rod. On PM rods this area will be kinda rough looking (not machined). Rods are cast (or forged, depending on the rod) and then cut apart to make the 2 peices, except the PM rods which are cast and then they break them. I'm not sure what process they use to break them but that is how it's done. The two peices fit together perfectly and do not have a machined finish. Also, the lack of a balancing pad is also an indication of PM rods as all PM rods are cast to be within a certain wieght and are therefore "balanced". The balancing pad is an excess amount of metal that is usually cast into the rod cap, this extra metal is put there so that the rods can be matched by removing a small amount of metal from the balancing pads. Usually, all the rods are wieghed to find the lightest one, then a tiny bit of metal is ground from each balance pad of all the heavier rods to bring them as close as possible to the same wieght as that lightest one making them all equal. This is not necessary with the PM rods as they are all approx. the same wieght as cast, that is why they dont have the balancing pad on the bottom, it's not necessary.

 

My opinion on Paxton blowers other than the Novi 1000/2000 is that they suck. I had a 92 Mustang with a 351W and 5psi from an SN2000 and ran a best of 12.8 @ 109.5. I pulled the blower off and sprayed the car with a 175 shot after that and ran 12.3 @ 114.

Now, before I tore this motor apart to stroke it(I bought the car with the blower on it), I noticed it had the wrong computer. But the Paxton's suck in general. Thats my opinion.

Wade

 

Well, first of all, I never asked your "Opinion" on the blower. Second of all, I get great results with my sucky paxton, ran a 12.9 @111mph on a stock engine, capable of more if I were to put some slicks on. Second, i had considered going with a procharger as my buddy did, but I can not justify spending 3500 more on a new charger. Especially since I paid 3g's for this unit in 98. It cost me only 200 bucks to rebuild my sn2000, I get a consistant 9psi out of it, It's MOUSE QUIET in contrast with my buddies that has the procharger. Don't get me wrong, his car sounds awsome, but I can hear him 2 blocks away! And he and his wife have a lot of extra $$$ His car is a bit faster than mine and we run the same boost levels (9psi). He runs 12.5-12.6's. I run 12.9. Now, I don't have a ****ing money tree outside in my back yard, but by cost comparision, It's been a pretty decent blower if you take the time to understand the limitations of the sn series and know how to rebuild them when it's necessary. What I've found is that knowing the limiting factor of these blowers is essential for dependable operation. Heat kills them, get a large oil cooler, spinning them over 38K rpm's will wear them out fast. If I could do it all over again, I would have purchased a procharger, but then again, I think they were just coming available when I purchased my blower.

 

Calm down, buddy. Don't get offended because of my opinion's. I was just making a comment about the blower and your HP level. I'm glad that your happy with your Paxton. I was just sharing my own personal experience.

I know you were asking about rods, but others started asking about the blower, so I shared my story. Apparently I struck(sp) a nerve. Don't take things so seriously over the net.

 

Well, like I said, I didn't ask for your opinion on the blower, then you come on this thread and tell me what a crappy blower I have That just is not cool. In my boat, price comparative, I get great results from it. I'm not willing to spend another 3500$ for .3 faster in the 1/4 for a procharger. Yet, If I could do it all over again, HE11 yes, I would have purchased an ATI. But my blower is easy to rebuild, 200 bucks a crack, and quiet as a mouse. I do have some giggle gas I'm going to throw on it once I build a 9inch rear end. Anyways, back to the subject, your opinion is just that, but I did not ask for your opinion of my blower. you just jump on this thread bashing my blower saying it sucks. I'm sorry you had such a bad experience with paxton, I could have too, but I learned how they work and learned what thier limitations are. It would be awsome to get an ATI pushing 20psi!

 

Take what you read on the internet with a grain of salt. Don't be a baby because someone you've never met, never will meet, or probably never speak to, had a negative comment about your blower.

Sounds like you, yourself, aren't satisfied with the performance if you wished you had bought the ATI.

I never said it was anything more. Opinion's are like *******s, everybody has one.

I clicked on the thread because I was curious as to what was in it. As everyone else was. Others made remarks abuot your setup, I did too. You just got offended for some lame reason.

One thing we agree on.

 

On the subject at hand...I think some I-beam's would suffice.

 

First thing, I am happy with my blower. However, If I could have purchased an ATI when I purchased my paxton, I would have because of the potential of the ATI far exceeds my paxton. I plan on using a 75shot of NOS, nothing more.

Now, If you think i was offended for some lame reason, you should consider if you put out a thread looking for some advise for rods and someone slammed your blower which you've had pretty good results with. I guess what i'm trying to say, you don't have anything nice to say, or constructive.....I hope you can figure the rest out. And the thing is if I was asking about my blower and you slammed it from your exp. that's fine, but i was asking about rods. I completely understand the limitations of my blower.


Second, I went with some eagle I beam's 5140 material.