Throwin a 305 and a 700r4 in my 68

[capev86]

unless it is a vintage, numbers matching corvette from the 50's, i'd rather have the 292. even shorter stroke than the 307/327....basically a v8 honda!

[Crispyr1]

Originally Posted by capev86

i'd stick with the big boy 292 and hop it up a bit (they have 4 barrel manifolds for these) but if you need a new engine anyway, a 305 would make a great stepping stone. my dad replaced the tired 350 in his 72 burb back in the 80's with a 305 out of a '77 monte carlo. he installed a camaro oil pump, an rv grind cam and rebuilt the stock 4 barrel as well as upgraded the ignition to electronic (hei). we used it to pull our 71 holiday 6,000 lb camper all over the place.

i'd prefer a 305 to the 307 in my 72 burb because it has the longer stroke from the 350, just small pistons which make for a more efficient power plant. i'd love to do a stroker kit in a 305 and work the cyl heads for better flow. but i have my bad boy 406sbc to go in my truck. i have a 3/4 ton with the 4.57 rear gear (i have the 3rd member to swap to a 4.10) so i feel your pain on fuel economy as my best on a tank has been 11.1mpg. i want to add the (rare) factory OD unit to the saginaw 3 on the tree eventually and that with the softer rear gear should get me in the 16-18mpg range. right now the truck screams on the highway and even around town it has too much rpm, even with that puny 307.

we still have that old holiday camper and i will be hauling it around everywhere with my burb next summer!!

man i would love to get the 350 that everyone talked about but i've already committed to the 305 but you sure do make it sound good! Now i gotta find out what i'm gonna do to the 305 while i'm savin up for the 350, as it may take a while, if that makes any sense.

[c-tenkid]

About 3 years ago a freind of mine told me he had a 350 he would sell me for 100 bucks.I said sure bring it over.He brought it over and the motor didn't have heads.I said that's no 350 that's a 305.I got out the calipers and measured.Sure enough 305.

I gave him the money anyway because I knew he needed it.I took that shortblock he sold me.Put a set of ported 461 double humps,458 lift lunati cam,Performer RPM a set of headers and a 1406 carb.

Another buddy has a stock 76 454 powered 3/4 ton 2wd truck.We raced and I ate him alive.With my 305..I took that stuff of the 305 and sat the short block in the corner of the garage.I built a vortec headed 350 that I blew up after to many 7000 rpm shifts.I took the 305 stuck a set of 283 power pac heads and a stock 4 barrel intake.I drive the truck everyday.It sounds great and has plenty of power.I shift it at 6000 rpm and it feels great.And it gets pretty good fuel mileage as well.Dang thing gets a third gear scratch with a 3 on the tree!

Why not keep a straight 6?The parts are cheap and plenty of them around for a sbc.You list stock power #'s for the engine's.Who cares about that.The sbc is gonna win.Who cares if it's a 305?

[Jim_PA]

Well, contrary to the popular opinion, unless your 292 is dead, I think you are wasting time, money and effort swapping to a 305.

You will spend more than you think on the swap, and it's all for little benefit.

Save the cash for a 350 or 383 / LS swap, whatever.

[Crispyr1]

Well have had the 305 and the 700 behind it for about 2 months now and i'm lovin the auto and slightly bigger motor! Thanks guys for all of the advice!