PDA

View Full Version : witch on is better for or chevy



racer99fan
05-31-2010, 08:23 AM
how much can u trun a 415or 430 was hopeing some where around 8600 to 8800 but not now if u can trun that big off motor that much or not

Egoracing
05-31-2010, 09:05 AM
All depends on the parts it is made of.

MasterSbilt_Racer
05-31-2010, 09:32 AM
8000 would be pushing the issue on a 430 with the best of parts.

SlingShot
05-31-2010, 09:46 AM
8000 would be pushing the issue on a 430 with the best of parts.
Just curious, for example a 430/18 deg motor, how hard should it be turned?

Chuckster421
05-31-2010, 09:46 AM
And a ford would come apart by 7,000 so stick with chevy.

shoestring19
05-31-2010, 11:16 AM
And a ford would come apart by 7,000 so stick with chevy.

Can I throw this in the hat for POST OF THE YEAR!!:D :D

big88fan
05-31-2010, 03:38 PM
I just bought a 430 from hatfield and 8000 is tops on it and it has the best you can get

latemodel17k
06-12-2010, 05:55 PM
We run a 430 in ours and it has an 8400 chip in it, some in our area run a 8600 or 8800 chip.

racer41
06-13-2010, 03:15 PM
i no a guy has a 415 race tek truns his 8400 or 8600 ever week at north ga speedway

CassellRaceEnginesInc
06-13-2010, 04:15 PM
Well......LOL......Every time i post all the Yo-Yos and Ding Dongs show up.....but what the hey.......The only one that can tell ya where to crank it is the builder.........where ever the peak is on the dyno......no point taking it past that..........FLAME AWAY YO YOs!!!!!!!!!.......LOL........and I am still here to try and help so all the Idiots can shove it!........go ahaed and listen to them........they will have you tearing it down 2 nite.....LOL.....and none of them have ever raced anywhere!....... I have personally cranked a 430 to 10,000!!!!!!........ not saying every 430 can......but I have done it with eagle rotating assembly!!!!!!......SMOKE ME IDIOTS!!!!!!!!!!

4bangerhotrod
06-13-2010, 04:18 PM
guys who get unlimited engines like most series guys run there engines 8800-9000 all day long no matter what size they are, but these guys go through 3-4 engines a year alot I know don't even run a chip an the ones that do are 8800 or 9000.

sj valley dave
06-14-2010, 04:46 PM
We run our 422 with a 8200 or 8400 chip in it and had zero problems with it! Callies, Carillo's, etc for the rotating assembly..

mudslinger47
06-14-2010, 10:31 PM
We run a TB and have an 86 chip in it but rarely get over 82. Makes a real difference on the track and the hang time too. Most of our tracks out here have zero hang time so the engine isn't trying to whizz its guts out.

Duane

MasterSbilt_Racer
06-15-2010, 12:18 PM
What matters is the piston speed. The bigger the stroke, the less you can turn it. It don't matter where the max power is on the dyno if the engine can't live there.

A 434 won't last too long at 10K. You will pull the wrist pins out if something else doesn't fail first.

grt74
06-15-2010, 05:24 PM
i run a custom 430 we never turn it over 8000 with cubes that big theres no need for it

JTSjet
06-15-2010, 06:12 PM
my question for racer99fan is what leads you to believe you need to be in that rpm range? it's a question of when the most power is available and where (on the track) you need the most available power. i don't doubt that one could build a 430 that would pull hard up through that rpm range but i've never seen one.

hpontap
06-15-2010, 07:51 PM
For guys not having the throttle control, it is easier for them to turn the engine past its torque curve to help control rear wheel spin. The engine is past its point of making power enough to not the spin the tires. So usually they end up with a smaller C.I. engine and twist it pretty hard. Higher rpm's.
For guys that have a smooth foot ( more seasoned drivers usually ) you can build a larger engine that does not have to work as hard because they know how to hook the car and get the available power to the track with the throttle. Less rpm's.
An engine turning over 5,400 FPM piston speed even with good parts is being turned hard to last all season without freshening.
Keep the piston down below 5,200 and you will be much happier.
Sorry for the novel...

SlingShot
06-15-2010, 10:45 PM
For guys not having the throttle control, it is easier for them to turn the engine past its torque curve to help control rear wheel spin. The engine is past its point of making power enough to not the spin the tires. So usually they end up with a smaller C.I. engine and twist it pretty hard. Higher rpm's.
For guys that have a smooth foot ( more seasoned drivers usually ) you can build a larger engine that does not have to work as hard because they know how to hook the car and get the available power to the track with the throttle. Less rpm's.
An engine turning over 5,400 FPM piston speed even with good parts is being turned hard to last all season without freshening.
Keep the piston down below 5,200 and you will be much happier.
Sorry for the novel...
How do you determine piston speed?
What is the typical bore x stroke of a 430?

MasterSbilt_Racer
06-16-2010, 07:14 AM
http://www.csgnetwork.com/pistonspeedcalc.html

^ Piston speed calculator

A 4" stroke and 4.125" std bore yields a CI of 428. Some would call that a 430.

newbie
06-16-2010, 08:23 AM
why don't you build engines in nascar? 10,000 rpm with eagle stuff......the last comic standing is still taking auditions


Well......LOL......Every time i post all the Yo-Yos and Ding Dongs show up.....but what the hey.......The only one that can tell ya where to crank it is the builder.........where ever the peak is on the dyno......no point taking it past that..........FLAME AWAY YO YOs!!!!!!!!!.......LOL........and I am still here to try and help so all the Idiots can shove it!........go ahaed and listen to them........they will have you tearing it down 2 nite.....LOL.....and none of them have ever raced anywhere!....... I have personally cranked a 430 to 10,000!!!!!!........ not saying every 430 can......but I have done it with eagle rotating assembly!!!!!!......SMOKE ME IDIOTS!!!!!!!!!!

racer41
06-29-2010, 07:07 PM
would go with one smaller one but u would have to trun it at least 96oo to 9800 at some tracks win it is very wet i have not had a super late modle motor only had limted late modle motors but want to move up to super late modle

Chuckster421
06-29-2010, 08:32 PM
I haven't heard anything that ffunny since john force said eleventyfive hundred

diplomunity
06-30-2010, 01:51 PM
And a ford would come apart by 7,000 so stick with chevy.....POST OF THE YEAR NOMINATION DO I HEAR THIRDS

and chucks been hanging around the guys that forgot their stearing wheel