vic_V8

If my car doesn't sell I'll need a 350 (i want a lt1 and a six speed but no money for it) I can get a 91 lo5, minus the intake and it needs a rebuilt. I want to swap the rear for a 3.42 posi, transgo shift kit, some sus., 454 tbi, will this get me into 13.5?

vic_V8

i did a search and couldn't find the right hp ratings. it went from 210-250? it also said the heads were crappy, i don't have the money for new heads, but I can port them.

V8Astro Captain

iTrader: (1)

The L05 truck motor was 210hp / 310 ft-lbs. FYI, if you get the L05 truck motor you get a flat tappet cam, if you get the car version like the Caprice you get a roller cam.

I wish I knew that when I bought mine....DOH!

I think the heads are ok to port. I don't think your gonna make AS MUCH power as you would with aftermarket heads, but you said budget so there's my $.02.

ZRATED

That lo5 with a rebuilt internals and new vortec heads would make a tough tbi motor.

fast_broker

iTrader: (1)

I've built quite a few L05's with nicer/better heads and the mellow Edelbrock 3702 camshaft, Edelbrock TBI intake and nicer exhaust. This is/was waaaaaaaaaaay before my TBI/PROM days and the TBI trucks ran just fine because of the small cam and PROM from Edelbrock matched to the cam/intake/exhaust upgrades. Something like 265hp??? I cannot remember but they tout the package in the Edelbrock Ctalog. Maybe only like 245hp? can't remember. Long time ago.

Anyway, probably not what you want out of a car... The motor is solid and with a rebuild, you're good. You can just use a flat-tappet COMP XE-12 camshaft of proper sizing for operation rpm range. I don't think I'd spend a ton of money on a rebuilt roller-block and the roller-cam costs just to get roller cam. just my opinion.

NotDadsW41

I think if you check into it you will find that these truck motors HAVE the provisions for using a roller cam setup they just don't have the roller stuff.

IIRC you should have no problem converting the truck motor to use a roller cam.....

Get the casting number off the block and go to www.mortec.com to check it out for sure....

Cecil

fast_broker

iTrader: (1)

Good call. He could be right.

V8Astro Captain

iTrader: (1)

Well yeah. The block is '87 and later so it has all the millings for the factory roller cam, it just doesn't have the actualy roller cam in it.

I could get a roller cam and use the GM factory roller lifters and keys along with the big spring thingy that holds them all down.

fast_broker

iTrader: (1)

GMPP has a kit for $179 that includes 16 roller lifters, the lifter alignment plates (8) and the hold-down shield (springy thing) and its attaching bolts.

vic_V8

no one really said what I would run. I'm gonna try to find vortec heads off a 96+ in the junk yards. Please help!!!!!!!!!!!!!!!

vic_V8

I forgot, I'll get a good cam too, hopefully I'll get 15 mpg

vic_V8

bttt, help a rs brother out!!!!!!!!

GSXMEN

Definitely go with a roller setup! Cheap extra power and you don't have to worry about cam break-in like you do with flat tappet cams. Check out www.goautocenter.com and check out the specials. They have several rollers for $80-$125. I'm getting one myself(either the ZZ4 or Hot Cam kit).

The Caprice 350 is a good motor, had one in my 91 ex-Cop car. I believe the cam has .415 lift on the intake and .430 on the exhaust. Throw in some 1.6 rockers and you'll wake it up. I know a guy around here that did just that with a 383 - 5 spd in a C1500. That thing was quick! Suprised quite a few people.

Scott