What is a fair price to pay for 336 sr1 92 to 94 with 502's on a trailer? i mean fair purchasing price not asking price,i am trying to help a good friend find the right one? Maybe a 303 can work as well but must have 454 mags at least. (I know one just sold in the Oso classifies)
But first option still 336 sr1, based on my research should do around 70 mph with stock 502's.

Any comments greatly appreciated.

Regards

Ps: if you come across one that fits criteria pls let us know.

My close friend that I boat with almost every weekend has a 95 336 with 450hp carb motors.. best he has seen is 68

$25.000 to $35.000 depending on power i know of 2 up here for sale 1 has 2 newer motors
fresh water use think its a 94 has ext steering also

smokin' gun

Please if you don't mind send me the info on those boats, my friend could stretch a bit from $ 24 k, thanks

It is a heavy boat after all, have seen posts that claim 70 mph with stock mpi 502's ,

It's a function of power to weight ratio and the absolutely right prop. Top speeds in these boats can var 3-5 MPH based on fuel, passenger loads plus having the right prop. Top end cylinder leak down due to exhaust valves leaking at the seat is an inherent problem with 454/502 cylinder heads from the '80's & '90's....due largely from the use of 90/10 ethanol fuels over the past ten years.

I was discussing this with a major engine builder recently that indicated that the exhaust valve seat issue is epidemic in big block Chevys and at about 300 hrs of normal use they are ready for a valve job with out special Inconel exhaust Valves and seats.

All of the above can affect power produced and top speeds of some of our favorite boats from that era.

I remember pulling 7-8 more mph cruising in your boat one afternoon playing with the drive trim not touching the throttles.

Formulas aren't known as top end champs in the sport boat world but moreover being able to perform well, comfortably over long distances in marginal conditions.

mine did 72 mph with the stock 502 465 hp's and 25 p mirage..^^^^^must not be driving the boat rite..diego,,,when looking make sure you check the forward bulkhead on thease boats b4 he buys a cheaper one..they rot,,ask me how i know??? i think formuls did a chit job on the stringers and bulkheads from the back seat forward..they are a wave crusher but stil beware..

if he wante to save some monet and wants to buy a fixxer upper look at theis one...

http://www.powerboatlistings.com/view/20132 or choose from here.. http://www.powerboatlistings.com/formula/sr1/

I like this one.
http://www.powerboatlistings.com/view/24138

That is really good to know, my friend Pablo had a survey on one and apparently it was solid but needs new long blocks