Vortec MPFI Conversion

[yukonjon]

Hey, I know a lot of people are looking into this and I just found it on ebay. Not sure who is selling it but might be something you guys are interested in. I would have posted it in the sale section but I don't have enough post yet but didn't want you guys to miss out on it.

http://cgi.ebay.com/ebaymotors/96-0...r_Truck_Parts_Accessories&hash=item3cb579b6ba

 

[992dr]

Good eye.
I had chatted with him a while ago about it but, he wanted $1200 and wasnt willing to budge.
Personally, if you want more power you really only have one option = LS based swap. While this is a great upgrade I dont think it pays off in power........

 

[yukonjon]

1200...definitely too much. It looks like this is on ebay with no reserve though. Im curious to see how much it goes for.

 

[992dr]

I agree, thats why I didnt buy it from him.
Yup, I noticed that to. Thats why I'm keeping an eye on it

 

[steamroller]

It was posted on another website that Michigan Motors is selling them for $800 brand new
http://www.michiganmotorz.com/cast-iron-marine-intake-manifold-2002current-p-486.html


Differences in the marine engine output and the truck applications. Copy/pasted from GM documents
Table 2.3.2-I.

....... HP Lbs.-ft ... HP Lbs.-ft... HP Lbs.-ft
1200 54.6 238.3..... 63.7 277.8..... 75 328
1600 80.1 262.1..... 92.1 301.4..... 100 338
2000 105.5 275.0... 121.3 317.5... 125 345
2400 126.8 277.0... 147.2 321.6... 150 347
2800 152.2 285.0... 175.6 328.9... 180 350
3200 173.4 284.4... 200.2 328.2... 200 358
3600 194.4 283.6... 223.1 325.2... 230 354
4000 211.7 278.0... 241.1 316.5... 260 350
4400 227.1 270.9... 252.7 301.6... 280 340
4600 230.4 263.0... 255.0 290.8... 295 330
4800 231.0 252.7... 252.8 276.4... 300 320
5200 224.6 226.8... 242.7 244.8... 307 300

............ L30........... L31........... L31 Marine



From what I understand the marine engine is rated with open exhaust manifolds though. I don't know how much that's worth but a good exhaust/header setup should match that and probably add a little more torque?

 

[992dr]

Yeah, thats where he had it in the classifieds.
While it is a nice upgrade from stock, I still feel that an LS based swap would be far superior, especially in the HP department.