SCREAMING 302 CHEVY to 10K RPM ???

[78_Cordeiro]

hey i was reading some different threads and there are some amazing minds in hear I'v always been into engine building but never got to do much more than study... any way I love the screaming small blocks I want to do an under stroke Chevy. 4.125 with a 3" crank ... I want to hit the 10k rpm mark so. I'v noticed this crazy stroker trend so I'm feeling a bit discouraged. I know its going to be a weird one to drive. i think piston speed will be ok at 5000 fpm with current technology. hey some one should come up with a variable cam timing device for these engines... any way love to hear some creative criticism or encouragement .... I'm Easy going ether way.

[Cammer]

Building a high RPM screamer engine may teach you why many build stroker motors.

Everything becomes more critical at high RPM's and the pieces exiting the engine become more expensive!

Let us know how project is going. Best of luck!

[Stan Weiss]

You could follow the old Pro Stock route and go 358 CI and still see 10K RPM. Up the bore to 4.19 and the stroke to 3.24, use a short deck block with a 5.58 rod and you have 950 plus HP. You might even find a used one for sell, which would be much cheaper than the $100K original price.

[BlackCat13]

Personally I think the pistons stopping and then starting 42 times a SECOND is hard on parts.

Secondarily, keeping lifters in touch with lobes is somewhat difficult.

Not to mention getting the fuel in/out in less than 1/1000 of a second.

[rookie]

No problem, you just need a lot of every thing, mostly money.

Cup teams spent millions of dollars and 50 years in developing such an engine and reached that goal just before NASCAR put a gear rule in place to limit rpm.

A lot of compression, a lot of CFM, a lot of cam, a lot of Titanium.

Titanium valves at 80.00 each, retainers 200.00 +, valve springs at 500.00+, shaft mount rockers at 1000.00+, cam lifters and push rods 950.00, a set your heads will probably need to flow 350 to 400 cfm to really make any power at that rpm so they will be around 1800.00 bare, probably 18 degree or better plus another 1000.00+ for labor and I would make sure your machinist is familiar with building a 10,000 rpm engine (NASCAR level shop) your low end would need at least the best aluminum rods, titanium for endurance racing, may be a steel rod if it’s an Oliver or equivalent, either way its 1200.00+ on rods, probably a CP pistons 800.00+ a 1900.00 block, 2000.00+ on a crank shaft

The true build of an engine of this nature would be I’m guessing at least $20,000.00

I would search for a used cup car engine.
Hear is one place to look
MuscleMotorSports

If you want to stay in the 8000 rpm range and you have cash in hand and are ready to buy something you might PM. DV and see if he has any GFN project motors for sale.

[automotivebreath]

Unless you have plenty of money to spend, racing high winding small blocks is a
spectator sport. Between runs today I got to see Byron Latino from Donaldsonville LA
run his high winding SS/BS '08 Pontiac G5. At 9500 RPM the little small block is a real
screamer, enough to produce 8.8 second ETs in the Louisiana heat.

If you like this sort of racing, check out the local NHRA sportsman points racing, make
sure you are in the stands for Super Stock and Comp Eliminator, its a real treat.

[automotivebreath]

Make sure you read this thread... division four action

...The last 2007 Dyno session a few Months ago we made
almost 1000 HP (998) ..but on that Pull the Engine was surging just
a tiny bit at high RPMs and i felt the Dyno HP were "False HP" as the
surging was "spiking" the Strain-gauge.

However it did make a bunch of 970 to 980 HP Pulls
that were very flat Curves.

Here's an old Dyno Graph from 2006 when it made 946.9 HP
as run at No Problem on that 6.81 192.25....

[78_Cordeiro]

short deck like 9.025 or custom shorter i guess with that rod you suggested?

[78_Cordeiro]

Originally Posted by Cammer

Building a high RPM screamer engine may teach you why many build stroker motors.

Everything becomes more critical at high RPM's and the pieces exiting the engine become more expensive!

Let us know how project is going. Best of luck!

ya don't have money for creative ways of giving my hood goose eggs.

[78_Cordeiro]

Originally Posted by rookie

No problem, you just need a lot of every thing, mostly money.

Cup teams spent millions of dollars and 50 years in developing such an engine and reached that goal just before NASCAR put a gear rule in place to limit rpm.

A lot of compression, a lot of CFM, a lot of cam, a lot of Titanium.

Titanium valves at 80.00 each, retainers 200.00 +, valve springs at 500.00+, shaft mount rockers at 1000.00+, cam lifters and push rods 950.00, a set your heads will probably need to flow 350 to 400 cfm to really make any power at that rpm so they will be around 1800.00 bare, probably 18 degree or better plus another 1000.00+ for labor and I would make sure your machinist is familiar with building a 10,000 rpm engine (NASCAR level shop) your low end would need at least the best aluminum rods, titanium for endurance racing, may be a steel rod if it’s an Oliver or equivalent, either way its 1200.00+ on rods, probably a CP pistons 800.00+ a 1900.00 block, 2000.00+ on a crank shaft

The true build of an engine of this nature would be I’m guessing at least $20,000.00

I would search for a used cup car engine.
Hear is one place to look
MuscleMotorSports

If you want to stay in the 8000 rpm range and you have cash in hand and are ready to buy something you might PM. DV and see if he has any GFN project motors for sale.

Ok this is making the hole stroker fad thing more understandable... my plan for the engine would be mostly street use... not daily but but not drag or circle ether... i just want it to be different and sound a little crazy... tall ring and a 5 or 6 speed not to load for exoust just nice. lots of nice clean country roads around hear.