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LYNRDSKYNRD
08-06-2011, 08:59 PM
Okay I have a 1987 ps190 w/ 351. The motor was rebuilt before I purchased the boat. Is there anyway to tell if I have GT40 heads w/o taking off the valve covers, or even then ? Just wondering about the heads, I'm really just curious.

1redTA
08-06-2011, 09:06 PM
you can search this, but I believe the GT-40 heads have some ribs, 3 or 4? On the end of the heads

Cloaked
08-06-2011, 09:35 PM
Okay I have a 1987 ps190 w/ 351. The motor was rebuilt before I purchased the boat. Is there anyway to tell if I have GT40 heads w/o taking off the valve covers, or even then ? Just wondering about the heads, I'm really just curious.credit to original poster
.

Dino Don
08-06-2011, 09:45 PM
Here is the frt of a GT40 P head--don't know about a GT40 head-
Putting these on my 87 351W Pro Star

http://i663.photobucket.com/albums/uu353/rioo68/IMG_0610.jpg

This is a pic of the chamber of a GT40P head that shows the difference--note where the plug comes out in the middle of the chamber--suppose to be much better fuel charge ignition.

http://i663.photobucket.com/albums/uu353/rioo68/IMG_0611.jpg

LYNRDSKYNRD
08-06-2011, 10:38 PM
Thanks I will give a look tomorrow. It's got an edelbrock performer intake, and mallory ignition. Thought maybe the po upgraded the heads too. I also have the spec sheet for the new cam shaft but I have no idea what any if it means.

Kyle
08-06-2011, 11:54 PM
The gt40 heads have 3 bars shown above on the black heads.

The gt40p heads have 4 bars shown above.

If you have 2 bars or 1 bar they are low HP heads.

LYNRDSKYNRD
08-07-2011, 12:30 AM
Okay I couldn't stand it......got out the flashlight. One line regular lp heads....

Thanks for the help.

Kyle
08-07-2011, 11:40 AM
Okay I couldn't stand it......got out the flashlight. One line regular lp heads....

Thanks for the help.

Dont get discouraged. Yank that engine out and for $1,000 you can have a bad mama jamma out of her. The p heads are like $400 for the pair. Then upgrade that ole low hp cam.

Trust me it makes a world of difference.

I let my buddy who has a 240 horse '91 190 drive me in my 190 with all of the goodies added. I pretty much had to pry the wheel out of his hands and pick him up out of my seat. He thought it was bad a$$.

Dino Don is about to find out how bad it is in the next week or two. :D