1 Bad Duster
Pro Street Duster
I would try to find a 340 and build that.. But If its between the motor you listed. I would go with a 360..
I concor.wow tough question!!!
after carefully reading and re-reading your post several times over and giving it a lot of thought I think I would go with the 346 stroker build, and here is why
1: you are only building a backup engine to have in the unlikely event something happens to your 360
2: your current 360 is already at your target HP with no problems
3: you already have the MP forged stroker crank, and any build will require buying pistons and machine work
4: if your block came with 302 heads then it should be roller cam
5: time is on your side, there is no rush to finish the build so you can take your time and do it right,
6: the increased compression over your stock 360 combined with a roller cam should easily out perform your current setup
my thoughts on option 1 and 2
option1: put the 318 back together and use it while you re build your 360, then put the fresh re built 360 back in
option2: why buy another 360 when you already have one, see option1
I tell you what, that little 318 ran great and revved like hell. I like to see a guy with a well built 318 keeping up with the 360 guys.
I would build the 318. Because I like to rev the PISS outta an engine. They have steel cranks. That's a plus. I also like to rub it in that a 318 just spanked your ***. LOL
bwahahahahaha now thats funny. what would you say to a 650cc engine that kicked your 318's ***?I would build the 318. Because I like to rev the PISS outta an engine. They have steel cranks. That's a plus. I also like to rub it in that a 318 just spanked your ***. LOL
bwahahahahaha now thats funny. what would you say to a 650cc engine that kicked your 318's ***?
Other than that, it's apples and oranges.
I had a 318 in my 69, added 360 heads (Milled .100 down to try to get some compression) holley 4 barrell, dual exhaust and a mild Comp cam. Worked all right but not spectacular. Should have run a higher stall converter for the cam.
Then I had a 360 built with a 4" stroker crank, roller cam and a bunch of other stuff - This is a fun motor - idles at 650 RPM, lots of vaccum, (Power Brakes), and the best part is the torque. over 400 ft.lbs from 2500 RPM and over 518 ft.lbs peak. IMHO there is no replacment for displacement. The most fun I have ever had driving a car.
I don't have the cam card in my wallet like some guys, but it is a Comp Cams Hydraulic roller that worked out to about .565 lift with 1.7:1 roller rockers (i used the Magnum Heads). I could have gone one step up but the limit for stock Edlebrock heads is .575 without some extra work. The steep ramp rate on the roller cam reduces duration so there is less overlap. This makes the Idle less lumpy and gives ton's of torque at the bottom end. I miss the lope of the longer duration Hyd. flat tappet cam I had in it at first, but I lost 2 cams even after carefull break in (Shell Rottella T plus Additive and assembly lube!). Wasn't going to take the chance the third time.What cam did you run in that stroker?