50 more cubes should give a bit more power but not sure how much and if is worth the trouble/cost. maybe a cam swap from a e225 would do the trick

See how it runs but I would be thinking about a belt for the power to the jack shaft. It would be smoother and less maintenance/reliable

find a45* elbo or have one made at muffler shop. Should help

keep us in the loop. good luck.

If your going into it that far,,,,, stroke it

There is a plastic liner in side the cable which when it wears through balls up and creates a tight spot which only gets worse.
yes you are better going new.

how many hrs were on those rings?

pictures?

https://photos-4.dropbox.com/t/2/AABUbIpfVWl5UqvP75bbcv_ikbM14ied9oElZ_WnCzfsDQ/12/124951404/jpeg/32x32/1/_/1/2/2013-03-27%2018.42.08.jpg/EITYm2AY8k0gAigC/2MpJupfIh2OOQFeHwg6610zn8ctMkfP-y3f6bm-OBmQ?size=32x32&size_mode=5 hydraulic activated with a mercruiser outdrive power pack. the cylinders h...

make sure your rubber cap on the pvc tube at the base of the carb isn't cracked or rotten. If it leaks your carb will be difficult to tune. I put a 2 in piece 3/8 of rubber airhose with a bolt siliconed in it to replace the rubber cap.

make sure your rubber cap on the pvc tube at the base of the carb isn't cracked or rotten. If it leaks your carb will be difficult to tune. I put a 2 in piece 3/8 of rubber airhose with a bolt siliconed in it to replace the rubber cap.

tubing cutter?

A mirror might help but a walk back on start up on trailer or ? would be better especially in warm weather. I was thinking about a pressure gauge in the cooling system might give indication of the beginning of a leak after you establish a normal operating reading. Just a thought

another thing to check is upon start take a look at your exhaust pipes. the leaker will be pumping steam before a catastrophic failer

Had that happen to me and the boat was 2 miles in rough territory. had to pull the heads out there (fiel repair) and got her going and now problems for 10-12 years.
I would hang on to that 434 sbc good chances it will out perform the LSA but not an expert

If you have good compression than try a 72x34 or go to a pitchible prop . which is the way

what equip are you running. Power , hull?

https://www.dropbox.com/s/5ef9kwz80h5w6 ... 4.jpg?dl=0

this is where it goes

you have to weld the bungs on the end of the headers before the flex pipe. the flex pipe leaks oxygen and will give you false readings. Read the install manual in the Innovate web site I sent you

http://www.innovatemotorsports.com/prod ... l_plus.php

To do it right spend a few bucks and buy one of these and take the guess work out . In the long run it will save you time and money plus a peace of mind

who or what is Big Sugar. I live in Michigan

I like the side exhaust but can't see mufflers?

buy the gear box and save yourself the r&d . your build cost is minimal . a good gear box is worth the money minus the headaches

if it is vacuum secondaries get a spring kit and go with a weaker spring. I run the weakest in my 406 but I'm running a Holly