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View Full Version : fastest speed yet,iam i there yet?



fasttrucker
09-06-2002, 10:16 AM
took my 28zx,502.out yesterday my myself,she went 71mph on speedo. eek! the weather was perfect warm but not too hot.much cooler then its been here in md. this summer :cool: .i think that had a lot to do with me finaly breaking out over 70.i played with the trim,up about 3/4 on the gauge.also had 1/3 tank of fuel,so as not as heavy.talked to my meck.when i got back,he wants me to buy a motor he had built for another cust.the guy wants to get out of boating,he wants to switch motors and sell his boat.anyway the engine has 35hrs 650hp.i dont think i can afford it. :p

Paul Storti
09-07-2002, 10:08 AM
Procharge it!!!
If the boat goes 70 with a stock 502 (415HP) it should get over 80 (81-83) with a stage 1 5psi kit (580HP). Just rough estimates from

http://www.go-fast.com/boat_speed_predictions.htm

The 7psi stage 2 kit gives 670HP and should get you up to the high 80's

How does the bost handle with a single motor do you go out in the ocean at all? The test drivers from Donzi told me they aren't making single screw 28zx's anymore because they are better balanced and handle better with twin smallblocks, I had originally wanted a 28zxo with a single 525efi but after talking with them I'm going to get a boat with twin 6.2's (when I can finally afford it!)

Paul Storti
09-07-2002, 10:12 AM
I almost forgot if you need a quote on a system call Rob at 717-938-8545 for a 502 stage 1 kit with the self conatined blower it was about $3900.

He quoted me $3500 for my 7.4mpi.

fasttrucker
09-13-2002, 08:31 PM
paul,ive done some minor upgrades to my 502.stainless marine exhast,k+n flame erester,az speed+marine reprogramed ecu.wires,cap,plugs.the boat used to go 65 when i bought it 4 months ago.i have run out of $.had to buy a newer truck.its a western star with a 475cat 13-speed.ive been thinking about heads+cam for next season,but i have to go slow for now thanks for posting.fast wink

harbormaster
09-13-2002, 09:56 PM
Show some photos of your new truck!

Gary S.
09-14-2002, 07:18 AM
Fast,,, who do you pull for ? I move oversized from the mid west down to Baltimore every now and then, I may see you out there sometime.

fasttrucker
09-14-2002, 02:32 PM
ive got the photos on disk,maybe i could mail them to u,then u could post them? smileybo or maybe i could download the software to be able to post them.ill try later. :p i pull reefer trl from mn.to eastcoast sometimes i pull a andersen window trailer if my trailer is in the shop. cool!

Paul Storti
09-15-2002, 09:13 PM
What spark plugs are you using, I switched from the factory equipped Champions to AC Delco Rapid Fire #1's and i think it has cost me about 3mph.