you need to lower the CR or run so little boost that the gain in power will be used by the blower drive. 600 hp 454 still has lots of room to grow N.A.

 

FYI. when I used a victor oval port instead of a performer my car picked up 4/10s. It was a mild street engine.

 

What Vinnie said, you're way over the limit for a roots type blower, drop that c.r. at least 2 full points to receive the goods a blower provides.

 

What Vinnie said ! :thumbup:

Jester

 

Thank you guys for the help. So i need to lower the C.R. first off. Well that sounds like ripping it out of the car and taring it down again, UGG!! :/ If that's the case? What's the best and easiest way to go about this, changing out the pistons, or heads? Also is it possible to accomplish this by putting on special head gaskets? Thicker? Another question, is the blower going to make my engine run hotter? I've heard they do from some and heard they don't from others. Sorry i hope i'm using this forum rite. First timer here.

 

454 Blower/Nos?

With the work that this may involve, would i be better off going with Nitrous?
I think what i got out of Vinnies first post is the blower would basically do no good at this point and not make any extra power with the C.R. as high as it is.
Sorry if i sound stupid here i just know nothing about the blowers..

 

maybe explain what end goal you have in mind? nitrous is great for race cars. On a street car with a big block,when you hit the throttle the tires break loose and then when you hit the NO 2 button you bury the speedo with out adding to the acceleration

 

454 Blower/Nos?

To be honest with you i am looking to get the absolute most out of both worlds on this one. I want to keep it streetable but with the most power possible. Still drivable but untouchable when i want to play with it or someone. I want unique, one of a kind. Just want it to get the business done with no fight. lol I know i'm asking alot. But i know i can do it.

 

454 blower help!

If you want to put a blower on a big block the best thing to do is rebuild the motor with flattop or D Cup dished pistons. You are looking at $500 for a set of flattop ICON Forged Pistons. Flattops and your 118cc Edelbrock heads will give you about 8.2 C.R. You will also need forged crank and H-beam rods. You are looking at a tear down and rebuild. Then your looking at another $5500 for the blower and all the accessories. If you have never built a motor with a blower you will have to pay somebody that has the experience. My guess your cost to build a blower motor with your block and heads $9000-$10000. Less if you already have forged crank and rods. If it were me I would add a Dual Stage Single Carb Nitrous System. Even this will probably set you back a grand.

 

OK,here is your answer.
leave the engine alone ,do a few fine tweeks later.

Get the car as light as possible and get it to hook as hard as possible.Spend time tuning transmission and gearing for your goals.
why does a 250 hp ricer destroy you 0-60?
If you want to launch hard you need gearing/traction/weight transfer. 500 hp can spin any street tire and most cold drag radials.
If you keep your 600 hp and get the car to weigh less than 3000 pounds with you in it,your car will jump. A 4000 pound car with 750 hp will just fry the tires

 

cdminter59 thanks! so your saying at this point just go with nitrous? I already have all the goodies in the engine all forged and h-beam. I already have over 10,000 in this motor now hate to tare it down. ain: Love the blower idea cause i love the look, sound, and power, but i don't want to sink another 5,000 or more in it just to put one on unless i have too absolutely. So You say Nitrous is the way at this point?

 

launching.

Vinnie i have massive low end torque now, snap your neck, rip the seats out of the floor torque, at take off. But i need that middle and up torque. while i'm doing 65mph i want it to still pin me to the seat. so i'd say that is my main goal here. have in the middle what i have in the beginning. Is it possible?

 

change out that intake.
how quick is the car? have you drag raced it?

 

Vinnie

When i have my Micky Thompson's on it it will do about 125-130 1/4 mile.
haven't been to winterport with this car yet.

 

454 blower help!

Yes, In all your post you don't say what intake and carburetor you are running. What gear ratio do you have in the rear end?

 

That is going by my speedo, and gps radar

 

Sorry. I am running an Edelbrock performer rpm intake duel plane, and an 850 cfm holly duel feed double pump. I have 373's in the rear possi

 

125 mph and 3400 pounds is 11.0 ish add a tenth for every 100 pounds

 

So can anyone tell me if the blower makes your engine run hotter or cooler? Found one for $1,000 with everything. course i'll have to get a new cam and a few small other things. Thanks for your support and help here everyone.. :thumbup:

 

more power heat from more power.
methanol will run colder

 

454 blower questions

You mean to tell me you are going to build another engine with 7.5:1 compression just to run a blower? You have an engine with 600 hp now try a Victor Jr. intake for more mid-range and top-end speed. Work on the suspension to get the tires to stick better.

 

intake!

cdminter59,I have a brand new Offenhauser Intake manifold now sitting under my bench, Would that be just as good as a victor jr. intake?

 

Well i want to Thank you all for your help, support, and patience with me on this little adventure of mine here. I guess i don't yet still know what route is the best to go.. The technical support you all have givin me is great and appreciated. We have a nice flat strip out here a couple miles down the road by what our family calls the old Spinney tree. My brother and i went up there yesterday before dark and marked out with paint exactely 1/4 mile strip to get an accurate reading on my speed. And we made 5 runs with it after taking 200lbs of subs and amps out of the back, and our final speed was 138 MPH in the 1/4 mile. Is that pretty good for a street car? I am in serious debate here because i love the blower looks, sound, and power, But like some people have said it is a waist of money to completely tare down a $10,000 motor that is already pushing 600+ hp to bolt on a blower. If i can somehow get 145 mph out of it in the 1/4 i will be happy?

 

How are you taking measurements?
3400 pound car going 145 mph would be making over 800 hp
that makes the car deep into the 10s

 

You say you're at 600 hp, is that from a dyno? At the crank, at the wheels, desktop dyno or seat of the pants? Are your heads GM and what are your cam specs? What trans and converter stall?