|
Cam-fuel. winter fuel?????
|
Originally Posted by Car Biz
(Post 2511700)
OFFTHEFRONT
.................................... Anyway the blocks are decked,bored and now have .30 Weisco forged pistons tha t are 9.6 to 1. Had the whole assembly balanced and put together. I got two sets of heads from Andy here on the board they are 990's that have been cleaned and milled for straightness. I bought two new AirGap intakes, a Custom cam that is a 228/238 .544.544 and a pair of HP 500 carbs that are going on top. I am hoping for 450-460 RELIABLE HP. we shall see in couple weeks because this is costing a CHIT LOAD OF DOUGH... :( |
I would try 750 carbs to start, I know they are good to 500 hp, the HP500 carbs are 800's and may be a tad too big, if nothing else you have a little better engine then a 420HP, .30 over, cam only a tad less kift on exhaust, otherwise they are the same as 420's should have been that easily..
|
carb size or jetting maybe ?
the lake is thawed and we have our fun run schedule gotta be dialed in by May 21, our first run !! Ramb |
Originally Posted by Full Force
(Post 2536403)
I would try 750 carbs to start, I know they are good to 500 hp, the HP500 carbs are 800's and may be a tad too big, if nothing else you have a little better engine then a 420HP, .30 over, cam only a tad less kift on exhaust, otherwise they are the same as 420's should have been that easily..
|
1 Attachment(s)
it is what it is. I am not real happy but it is prolly 100 more HP na side than i had before. Here is the dyno sheet Don't forget to click on iit will get bigger so it is easier to read
|
What exhaust did they have on it when they dyno'd?
|
Originally Posted by Audiofn
(Post 2539062)
What exhaust did they have on it when they dyno'd?
|
I can relate to your ordeal Car Biz. Two years ago I bought a 1990 272 with a pair of 454's. Boat ran fine for about 5-6 hours of run time. Opened the hatch one day while idling and noticed a water leak between the intake and the block. Checked the dipstick and it was loaded with water. Pulled the motor, cracked block. I went the easier way and threw in a 420 crate motor. Last winter I matched the other motor with a complete rebuild. Last summer was pretty much trouble free. 1st year sucked.
|
is she up and running yet? Give us some details
|
| All times are GMT -5. The time now is 08:33 PM. |
Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.