why ppl here and in other fbody forums say that you can't use 2.02 valves on a stroker 305, it makes me question their advise because right now Im running a 305 with 2.02 + 1.06 valves and I love it, runs great.

 

hey fastred


The reason that most people don't use the 2.02/1.60 valve is because of the bore is so small . yes they will work. but the problem is that when the valves open they are so close to the cylinder they can't flow on that side so u get maybe to use 3/4 of the valve. that is why peps stay with the 1.94/1.50 because they will out flow the 2.02/1.60 valve when it's on the motor.
the only way to benfits from the bigger valves is to make the cylinder bigger but 30k over doesn't really give much room for improvement on airflow. Also do a search on airflow for the 305 heads

 

No problem on running 2.02/1.60 valves on a 305. I've been saying you can do it for years.

I've mocked up a 305 block without a crank and some putty with 2.02/1.60 heads. We played with a few cams and roughly the shrouding would occur roughly at .520-.540" IIRC and actual valve-bore interference occurs at .600" IIRC.

 

thanks for ur answer guys. soon I'll take the car to the track once the engine is broken in nicely to see what it does, I will post the results.

 

im not trying to be smart or anything but 2.02 valves are bigger than 305 pistons hehehehehe just kiddin tryin to make a funny

 

that is funny 91rs but what is even more pleasing and funny to me is that mustangs nor imports dare rev their engines next to me, you guys should here it and see how f---ing fast my car is. I have finally proven my point to myself and those that said 305,s can't run---------boy are they wrong. For the smart ones Im not trying to start anything but what I am willing to do is race anytime I hate bench racing. If you are thinking how fast---HINT---(MOVE OVER BADDEST305 11.40 ET 1/4 MILE) SEE YAAA

 

That's a pretty big claim. I wondering how you are going to do this (IE: mods).

 

so lets see some slips

 

I will support the 305 claim. They can be built. Mine ran 10:978 with a speed of 134 m.p.h....I'm not gonna say what I did because that was the last race it ran .... then a rod came shooting through the block at the finish ...yeah so um... but it ran into the 10 sec bracket ...once. (R.I.P. li'l guy...R.I.P.) That was the most frigged up connecting rod in the history of racing...I think. All twisted with no studs (found them in the oil pan) rod journal broken in half, wirstpin half gone. F#cker must've had some velocity. lol. no more 5.0's for me.

 

It can be done... I have done it. I have no complaints about it. I had the world torquer 305's with em... block .060 over. Ran like a champ. Ran a 525 max lift cam... talked to some pros... said valve shrouding will not really occur with that cam/bore/valves. It's ok to do it... just please don't put em on stock 305 heads.

 

It seems like finally some ppl know the capabilities of a well modified 305 and for those that want to see slips they will come soon in August because I need to break the engine in a little. As far as mods really they are too many to list short of saying I have a 1992/03 camaro--get it. Later :lala:

 

That's what I'm saying. It takes alot to push a 5.0. Alot of money knowhow and patience. The motor must be radical in order to achieve what a good 5.7 can do but, it can be done. Not to mention tranny work weight reduction....etc.

 

There's a much easier (and practical) way to get an engine to achieve what a good "5.7" can do....

 

define a 'good 5.7'

and tranny and weight reduction will have to be done when you moddify, no matter what displacement have.

of course a 5.7 is ALWAYS going to make more power. no one here is stupid, we understand displacement.

when i started planning out my project, going to bigger was an option, but i instead opted to stick with the 305, and purchase parts that will be a good match with a 350, so when the 305 does go, i already have the parts. basicly the only thing in my setup that will need to be replaced when i go 350, is the cam, and even that will work well in a 350.

my combo is expected to be at a much higher power level than a good number of 'modified' 350's that are running around this board. and i did it all on a relativly small budget. if you do the research, and put the time and effort needed to do a well designed and planned out project, you will get good results, no matter what displacement you are using.

 

First off I didn't say anyone here was stupid. Secondly Displacement does have a factor. If it didn't, then why does a stock 5.7 beat a stock 5.0? displacement! . . . wider bore. longer stroke. cam size... they all factor in displacement. Please think about what you are saying before you say it. I'll admit I don't know everything but Engine fundamentals explains the formula for finding displacement and what it means in translation to overall output. I agree with you when you say that a well thought out plan is better than bigger parts. It's true. I had a 350 from a 79 iroc and dropped it in a buick lesabre. The motor had a stock cam punched .030, manley severe duty valves, and a p&p backed with a mild tranny and 3:23 in a 7.5 diff. As you can see there was not alot of work done to that motor at all yet, that 17 sec grandpa-mobile turned into a 13 sec sleeper. ( I have pics for anyone who doubts me.) I beat a thirdgen Z that had a 350 punched .050, 1/2" cam edelbrock fuel delivery and induction...he basically had a more radical motor than me yet because he did not think when he put it all together (stock tranny and rear end, etc. . .only motor work) He lost to me by about one car length which was about .5 sec. I figured out how to get the most out of what that engine had and as a result I beat him. I thought I was going to lose to be honest with everyone. I thought I was going to be out $100 but, I didn't lose.

P.s. there is your definition of a "good 350"

 

actually, a 350 has the same stroke as a 305, just a larger bore.

 

cam size?

 

The 305 has the same stroke as the 350 and they never made Irocs in 79. Cam size has nothing to do with displacement.

 

FWIW i really doubt you

 

Hmm lets see some pics and then some time slips.