Cascade Crew

[GREG DAVIDSON]

as most of you know im doing an engine swap an i kinda was thinking bout rebuilding the blown motor depending on what i find so heres my questions will all 350 parts fit on the 305 block ? and if if so what kinda horse is it good for or is it just a better idea to find a 350 and build it? this will be my first build any opinion helps so let e have it guy's

[Dewey316]

What 350 parts are you talking about?

[GREG DAVIDSON]

mainly top end intake, heads, cam not shure i'd rather just build top end but i'm not shure i just like to get stuff figgured out before i start

[Dewey316]

It will all bolt up, but using 350 heads, will drop your compression down. The cam may/may not work well. The intakes are the same though.

I would start off, by instead figuring out your budget, and a basic goal you are going for. Then figure out which route is going to be the best way to get there.

[GREG DAVIDSON]

yea i'm shooting for around 350-400 hp is what i want but i prob wont get there =( low compression is bad for hp isnt it

[Dewey316]

305's are bad for it to. Instead of spending money rebuilding the 305, use that money to rebuild a 350. No cost difference in rebuid costs. Your only cost difference would be in getting a used 350 (cheap). If you are going to buy pistons/rods the 350 pistons are probably cheaper.

[GREG DAVIDSON]

thats what i was thinking just kinda wanted to hear it from more people than me i know i can get 350 blocks all day long on craigslist cheap cheap maybe just go that route

[cameron7710]

ya id say just go 350

[chevymad]

Definatly go with the 350. At that power level stock rods and crank should work fine. Even 2 bolt will work, though 4 bolt blocks are pretty easy to find. Most stock heads will suck. Especially if taken off of a truck, unless its a vortec. 96 up vortec truck motor would be an especially good one to find I think. Set up for roller and has good heads on it allready. Havent researched it, but there may be some differences in the timing cover area. An L98 wouldnt be a bad start either. I'm using a set of L98 heads I've ported on my truck, and they seem to work pretty well. 70s era blocks will be good, but arent set up for factory roller cams. Heads of that era are complete garbage. If you can afford it at all, step up to forged pistons. Remember the shortblock you build will be the limit to your future power level. Heads, cams, blowers, nitrous.. all can be added later, but its a whole new motor if you didnt build it to take the abuse.

[alloy]

Here's a 350 in a surburban. Might be a 4 bolt main, but definately is a roller motor with a 1 piece rear main. Good thing about this one if you can hear it run and probably pull it yourself and get all the little extra parts you may need.

http://portland.craigslist.org/clk/pts/883583759.html

[chevymad]

Most likely 2 bolt, definatly roller and 1 piece main like dan says. Good motor, just throw away heads and put on a set of vortecs or aftermarket.

[GREG DAVIDSON]

that blocks gone but thanks for the lookout guys i'll def put up another thread before i buy yea i want the vortec heads kinda like to build it myself but im kinda afraid i'll mess somthing up but i'm still going to try

[GREG DAVIDSON]

what kinda fuel pump changes would i have to do to carberate it my guess is the pump in the tank isnt good enough do i need to put an inline fuel pump in ? or just find a block that has a manual pump on it i really dont wanna take the tank out

[Twilightoptics]

Run the intank pump with an oil pressure switch. So if you don't have oil pressure the pump shuts down. Ideal for crashes, etc. Make sure it has power on the cranking cycle though.

Then run a $70 regulator. It uses both feed and return lines then 1 line goes to the carb at the proper 3-4psi.

[Quasi-Traction]

what about just buying a cam that has the pushrod lobe on it, and buying a $16 NAPA pump? he's building it anyways, right?

[Twilightoptics]