Replacing a 2000 model 7.4 mpi. evidently I had a leaking riser, and water sat in the cylinder over winter. I am looking for the best place to buy a long block. Is there a vendor on here that is trustworthy, and also stands behind their products? thank you for your suggestions.

NEW 454 (7.4L) LH 330-350 hp Gen VI Roller
Oval Port Head $5,199
Includes cast aluminum valve covers, hydraulic roller lifters, 8 qt marine oil pan, composite timing cover, harmonic balancer.

There is no provision for mechanical fuel pump - electric fuel pump
must be used.
here is the link, I have used them for new GM marine engines that I install in customers boats and never had a problem. The remans they sell I did. but not the new ones.
http://www.1800runsnew.com/newbase-details-NLM.html

also
454 (7.4L) LH 410 hp Gen VI Roller
Rect. Port Head $5,999

thank you!! Im seeing prices all over the place. worries me. So no go on a reman?

well i used a few different reman places, 1st mate marine(aka;mashall engines in nebraska), hesco, atlantic engine exchange in lynn ma. and Marshall engines in skowhegan maine. had issues with most of them. NEVER had an ISSUE with any of those new motors. NEW is the way I go. UNless you want to do a custom build and know a good shop...
Jim

Didn't we go over this same topic in a thread yesterday😎
My new engines 502's did come with fuel pump provision with a block off plate. The cams do not have a lobe to run them. I had Bob M grind new ones with the lobe. It's my understanding all the new blocks are being cast with provisions for fuel pump. My 2cents

Yep, and we will probably see a lot more threads like this in the coming weeks and folks "wake up" their boats and find out that their winterization was not as thorough as they thought, or they fire it up for the first time this spring and it pukes, etc.

Most of the Gen VI 454 blocks I have seen do have the provisions for the fuel pump. 502 blocks usually did not have them, but the later castings went back to them. I don't think any of the Gen V blocks have them - GM started adding them back when they revised the Mk IV block with the Gen VI.

I read that entire thread, and to be honest didnt get the info that i wanted. I wanted opinions on reliable sources to buy from. All i seen in that thread was places NOT to buy from.

Has anyone looked into Ateco. Aren't they doing some sort of marine crate motor? They are a legit shop so I'd expect a decent engine. Price?

This place has been around seemingly forever..Anyone know any good or bad ?
http://www.michiganmotorz.com/marine...s-c-31_46.html