I'm looking to compile a list of performance parts available for the 3.4 pushrod. I'm looking for a good set of connecting rods, recommendations, part numbers and brands or available sources.

summitracing.com

Put in the engine or pick a 1995 camaro with 3.4. there's your list of what is available.

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Pull the info off this page. It's from an old Archive http://web.archive.org/web/...ormance/60degree.php

[This message has been edited by fierosound (edited 02-03-2011).]

quote Originally posted by rourke_87_T-Top: I'm looking to compile a list of performance parts available for the 3.4 pushrod. I'm looking for a good set of connecting rods, recommendations, part numbers and brands or available sources.

I think it helps to know your goals so that we can best advise you on how to achieve this.

For instance, do you want a boosted motor? Parts will change based on that...

I bought an '88 Formula, and a lot of parts were included, two additional motors, one is an '87 2.8 the other is a 3.4 P.R. on a stand. Ported and polished cylinder head castings, F.S. Sprint headers, Truleo intake, 62mm throttle body, I also have 3400 dohc pistons, a couple different cams to choose from, H272, new lifters, bought valve springs from another member, I believe they are 130 # but will need to measure them, neutral balance Fidanza aluminum flywheel, Spec stage 2 kit, new guides, stem locks, double roller timing set, ARP bolts etc. not planning to boost it. just a stout plant to thrash.

[This message has been edited by rourke_87_T-Top (edited 01-31-2011).]

Plan on doing an ECM upgrade also if you want to push the engine. You can get by with increasing the fuel pressure with the stock 2.8 ecm on a stockish 3.4 but if you want to tweak it, plan on a ECM upgrade.

I also picked up Edelbrock fuel pump, p/n 17933 , yes I figure the adjustable fuel regulator 17 lb. and computer upgrade would be required.

Talk to gmtuners.com and see what he recommends for the ECM. The 7730 is fairly popular.

What compression would the 3400 dohc pistons produce in the 3.4 pushrod ?

quote Originally posted by rourke_87_T-Top:

[This message has been edited by rourke_87_T-Top (edited 02-02-2011).]

Go to this website, http://60degreev6.com/forum...tent.php/101-CR-Calc , and look up the 3400 default specs. Note the piston dome volume. Now lookup your 3.4L iron head motor with "Use User Entered Values" and input the 3400 piston dome volume instead of the 3.4L piston dome volume. This assumes piston deck clearance is the same.

I get 9.95:1. Use the CR calculator to play with different values like head gasket thickness to get what you want.

I'll give that a try, I picked up this 3.4 motor project from someone else which inclued many parts, I'm just formulating a build.

quote Originally posted by Hudini: Go to this website, http://60degreev6.com/forum...tent.php/101-CR-Calc , and look up the 3400 default specs. Note the piston dome volume. Now lookup your 3.4L iron head motor with "Use User Entered Values" and input the 3400 piston dome volume instead of the 3.4L piston dome volume. This assumes piston deck clearance is the same. I get 9.95:1. Use the CR calculator to play with different values like head gasket thickness to get what you want.

I think you forgot about the combustion chamber volume in the head. Don't have the specs handy,
but the iron head and aluminum head volumes are nowhere near the same.

[This message has been edited by fierosound (edited 02-03-2011).]

are you talking about putting the 3400 pistons in the 3.4 block? are they the same diameter as the stock 3.4 pistons or are you having the cylinders bored out?

quote Originally posted by rourke_87_T-Top: What compression would the 3400 pistons produce in the 3.4 pushrod ?

With our intake,the Sprint headers and higher comp pistons you should go with a more aggresive. Most cams for these are designed for use with the rev limiting stock intakes. Checkout what Engle has. Just dont with the 509 lift to be safe piston wise.

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Oh so you have a P/R motor but you also have a set of the 3.4 L DOHC pistons.... I got the message wrong... sorry.

Here's where I got my forged connecting rods.. ARI Engines

http://www.engine-parts.com/

and again my pistons are from Ross.. I'm running a 260 comp cam with 1.6 roller rockers from crane, performance springs and SI stainless valves.

[This message has been edited by unboundmo (edited 01-30-2011).]

quote Originally posted by unboundmo: Oh so you have a P/R motor but you also have a set of the 3.4 L DOHC pistons.... I got the message wrong... sorry. Here's where I got my forged connecting rods.. ARI Engines http://www.engine-parts.com/ and again my pistons are from Ross.. I'm running a 260 comp cam with 1.6 roller rockers from crane, performance springs and SI stainless valves.

how much where your pistons$$$ ? im assumeing you have forged? also im doing a 3.4pr swap and am wanting to go with 1.6 rockers... did you have any trouble clearing the piston tops with the valves? im useing the stock flat top pistons, stock valve length, stock springs and a mild cam from west coast fiero..... i think it was the 80 instead of the 60 series they offered??

[This message has been edited by snakeskinner1 (edited 01-30-2011).]

Ross pistons started around 99 each. You can get a floating pin or the other way. They offer all the rings, bearings and such also if you need them. Yes they are forged aluminum and no problem clearing. I do know to look into the rockers because only some will fit. The pistons are flat on top too. When I get on the regular computer I'll attach a picture to a post.

The Las Vegas Fiero Club built and installed my 3.4 PR. sardonyx247 is his user name on Pennocks. That is all they do and have quite a good reputation. Plug for them , sorry. He knows this motor inside and out and has been doing them for years. I would ask him. Their website is http://www.lasvegasfieroclub.org/

Here's a picture of the Ross piston and ARI forged connecting rods --- snakeskinner1, I wanted to add that the 1.6 ratio will put a strain on the springs if you are using a 260 or higher cam... I may be okay with a 252 cam but ask around.

[This message has been edited by unboundmo (edited 01-31-2011).]

those things are b-e-a-utifull! i assume the pistons are also forged? i have been tossing the idea of forged pistons around in case i want to add boost in the future but $$$! if you dont mind.... what did that set cost ya?

If youre going to stay at 9.5 comp or lower -for todays gas- and dont plan on boost or NOS, you wont need forged psitons, Also I may have a much cheeper source for higher comp pistons, I'll ost who they ar ad the details if it works out. Also, if youre going to go with higher comp pistons keep valve lift in mind and dont forget to do the math if you use 1.6 rockers.

quote Originally posted by timgray: summitracing.com Put in the engine or pick a 1995 camaro with 3.4. there's your list of what is available.

^ ^ ^ What he said ^ ^ ^
I can try to dig up part numbers later, but most of everything is at Summit. Other part numbers may be in my thread, link in sig.

quote Originally posted by phonedawgz: Plan on doing an ECM upgrade also if you want to push the engine. You can get by with increasing the fuel pressure with the stock 2.8 ecm on a stockish 3.4 but if you want to tweak it, plan on a ECM upgrade.

You don't need to swap ECMs, the Fiero one works fine. Incressing fuel pressure is not the best way to tune an engine.

quote Originally posted by hercimer01: The Las Vegas Fiero Club built and installed my 3.4 PR. sardonyx247 is his user name on Pennocks. That is all they do and have quite a good reputation. Plug for them , sorry. He knows this motor inside and out and has been doing them for years. I would ask him. Their website is http://www.lasvegasfieroclub.org/

Thanks for the comment

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quote Originally posted by snakeskinner1: are you talking about putting the 3400 pistons in the 3.4 block? are they the same diameter as the stock 3.4 pistons or are you having the cylinders bored out?

I didn't realize there were so many combinations of these hybrid 60* V6's or that the 3400 pistons were an option in 3.4 P.R. , but I have 3400 dohc pistons.

quote Originally posted by rourke_87_T-Top: I didn't realize there were so many combinations of these hybrid 60* V6's or that the 3400 pistons were an option in 3.4 P.R. , but I have 3400 dohc pistons.

Sorry, getting confused here with the different V6 engines with 3.4L displacement.

While the 3.4L DOHC pistons will work with Fiero heads, the 3400 pistons will not (compression too high).
See pics http://www.angelfire.com/on...tblock/shortblk.html

We think of the 3400 as the roller cam engine block with aluminum heads.
Then the 3.4L DOHC, then the 3.4L P/R from Camaro/Firebird (same heads as Fiero).

My GT's engine is a hybrid of all 3. I used the 3400 block because I wanted the roller cam setup, used Fiero iron heads on it
and installed the 3.4L DOHC pistons to bump the compression ratio to approx. 9.5 (works fine with premium gas).

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[This message has been edited by fierosound (edited 02-03-2011).]

I added to the confusion by repeating the OP's use of 3400 DOHC instead of the normal 3.4L DOHC. Sorry bout that.