Whipple Questions
 

I am thinking of adding Whipples to my '02 HP500EFI's this winter. The motors have 200 hours on them and I plan to replace the head gaskets, studs and valve springs - what else will I need to do to make this package complete and relaible? I'd like to know exactly what needs to be done so that I can decide if this is the right route to go or not.

Once completed what can I expect to see for horsepower gain?

Any help that you guys can give me would really be appreciated

Re: Whipple Questions
 

if you call dustin whipple direct at 1-559-442-1261,he will talk to you directly and eliminate any confusion and bogus claims and blown engines.

Re: Whipple Questions
 

If your are going to go thru the motor go all the way & rebuild shortblock. That way you will be done with it. Once you go blowen you will never, I say never go back.

Re: Whipple Questions
 

I agree with Turbojack.

I put a Vortech on my 500EFI last spring after I went through the entire thing. Turns out that even though it ran good, the pistons were burnt. The head gaskets were leaking across cylinders. Use Cometic. All I kept was the crank and cam.

I have 100 trouble free hours so far. Go for it.

F

Re: Whipple Questions
 

I Whippled my HP500EFI in May. I was told that I didn't have to do anything else as I only had 70 hours on the engine. It ran for four hours before I lost a head gasket. I did the gaskets(Fel-Pro) valves(Inconnel), studs, springs, etc. Did not touch the bottom end. At the same time I installed a water pressure gauge and found that I was only getting about 14lbs of pressure. 25 lbs is ideal and 14lbs is way low. After much testing and installing a sea strainer and off shore pick we found that the installer had forgotten to install a restrictor plate when the cross-over was installed. Cost a lot because of that brain-fart but it's fine now. As for power, I have heard different numbers but I think it should be around 700 or so.
Wasted this summer trouble shooting but looking forward to '05.
Good luck.

Re: Whipple Questions
 

There is no need to touch the bottom end of that motor. PM me and I will tell you all the things you will need to do to have a very reliable turnkey 750 hp setup. I have had a Whipple now for three full seasons with absolutely no issues and it runs awesome!!!

Re: Whipple Questions
 

Bigwavz,

You read what I did, did I miss anything?

Re: Whipple Questions
 

What about fuel lines - do they need to be changed too or are the stock ones ok?

Re: Whipple Questions
 

Hotlavey,

Looks like you covered the important stuff. What kind of head bolts did you go with???

Splashandburn,

The Whipple setup will come with additional injectors. You should not need to change fuel lines. If it is needed then Dustin would have designed them into the kit. His kits are very well laid out. He does alot of testing before he puts them out to the public.

I will answer your PM later today with what you need.

Re: Whipple Questions
 

Bigwavz,

We went with ARP head bolts.

Re: Whipple Questions
 

Hotlavey,

Looks like you have it all covered !!! Put some gas in and go !! Oh Yeah winters coming :( :( :mad:

Re: Whipple Questions
 

Yep, it sucks. Just when I get all the problems solved.
The boats in storage now so that's it for this year. 05 is looking good.

Re: Whipple Questions
 

What do you guys think. I have a pair of 509's in a 30' Spectre and am thinking about adding the 3.3 carbed whipples. Right now I do not have a roller cam(Fairly large hydraulic cam). I have ported GM cast iron heads, 1050 dominators, speed pro pistons, crane roller-rockers, inconnel valves, 9:1Cr. Dynoed at 550hp at 5500.

I assume changing to a roller cam is probably a must? What cam would you recommend? Are the cast iron heads at 9:1cr ok with the whipple?

Re: Whipple Questions
 

Swede,

You do not need a roller cam for a Whipple. Mine is on a stock motor with flat tappet cam. Call Whipple and ask for Dustin. He is the owner and will chat with you and tell you exactly what will work and what won't.

Re: Whipple Questions
 

Edelbrock Performer RPM
adv(.006") 300/306 @ .05 240/246
Lift at Cam .330/.337 Lift at valve.560/.573
110 ICL
112 LSA

Flow test on my GM pocket ported heads.
.3 214/147
.4 269/184
.5 314/205
.6 340/220
.7 348/229

Re: Whipple Questions
 

don't forget to talk with a few people who have had nothng but problems with them, then weed out owner error problems and system problems, I have seen long strings of posts on here with people complaining of their service, as well as people who are pleased, I know some people with them and some people who were happy to sell them and get them off the boat.

Re: Whipple Questions
 

What is the best Whipple for my HP500EFI engine? I currently have the 2.3(2.2?). Should I consider the 3.3 or stay where I am? Dustin told me the smaller one is perfect for me and that the 3.3 is better for modified engines. I believe Pfaff says the 3.3 is the way to go.
Opinions?

Re: Whipple Questions
 

I would trust what Dustin tells you. After all, he is the owner of the company. What would he gain by giving you wrong info???

Re: Whipple Questions
 

It is correct to use the 2.3 on a stock 502. If your engine is modified and breathes better on it's own, then you can use and need the larger capacity blower. this is better than spinning the small one faster. All positive displacement blowers are like this including Roots.

Re: Whipple Questions
 

Craig,
If you want to go faster, take the patio furniture, the dinghy, the carport and the pool table off your boat!

Re: Whipple Questions
 

Hey......... that pool table really helps out when the water gets rough - you know - more weight = better ride!! It helps to balance the load when we add to much water to the plants too.

Re: Whipple Questions
 

How much can you loose with the head gasket? I believe the ones I have now are .046"?