Need some small block chevy research help - Page 2

Schumi · 10-24-2013, 02:57 PM

It would be a badass motor for the Mercedes though... about the same weight as the V12 but I'd gain a lot of room and get rid of a lot of crazy electronics.

Hell, the R129's engine bay is so big, I could probably fit two small blocks in there back to back.

johnsjmc · 10-25-2013, 05:33 AM

I think you have a 327 with 1.94 camel hump heads They were called 275 in some body styles and 300 hp in others. Cast pistons hydraulic cam 10:1 comp either a carter o later yrs used a quadrajet. The high horse 35o hp and up used forged 11:1 pistons and 2.02 intake valves same chambers and ports. Pre 68 no accesory bolt holes in the front of the heads.
In 68 or 69 the crank journal size was increased and the hard one to find has a large journal steel crank and bigger bolt rods.And the heads have mounting holes but still use the high compression chambers.

Schumi · 10-25-2013, 06:17 AM

It's got a Quadrajet, and it seems like it could be the original carb.

It's had head work at some point in it's past- it has upgraded double valve springs, and they are larger. The seats were machined for the larger springs, and the seals are upgraded to the full circle kind, not just the umbrellas on the exhaust valve. It also has original rod guide plates.

Can't wait to hear this thing run.

johnsjmc · 10-25-2013, 07:31 AM

Heads with guide plates says 2.02 and machining for BBC springs was fairly common for added lift. Screw in studs and plates were post 68 OEM. on 302's but not those castings

RANDY P · RANDY P's Garage

Feel free to sell me the carb

I like Q Jets.

rjp

Schumi · 10-25-2013, 10:49 AM

It's got screw in studs... they would have to be aftermarket if they didn't do screw in until 68.

It's a hot one for sure. You guys wouldn't believe what we paid for it. We got it thinking it was some 80's van motor. It was dark when we picked it up, and we were late and didn't want to inconvenience the seller any more than we already had, so we didn't look too close at it before loading it up. Then it sat in my buddy's trailer for a while because he was out of town. Finalyl we got it in my garage and ... what do you know... it's definitely not a van motor...

LWJ · 10-25-2013, 03:44 PM

My father purchased a 69 3/4 ton long bed when I was in HS. It had a similar 327 transplanted in. That truck just pulled like hell! I assume the truck weighed 4500#. Put that power plant in something under 3000# and you will have an ear to ear grin.

gamin · 10-26-2013, 09:47 AM

My son blew the 305 (?) in his 70 Nova. We found a rebuilt 327 double hump heads 4 bbl purely by accident for $500. Put it in the Nova ahead of a 3 sp manual and will that thing fly, in a straight line of course. He got a lot of tickets in that car. Now it is all restored and looking good in marina blue. You can't go wrong with a 327.

masraum · 10-26-2013, 10:20 AM

Quote:

My son blew the 305 (?) in his 70 nova.

If it was the stock motor, it would have been a 307.

Jim Bremner · 10-26-2013, 10:22 AM

4" bore 3.25 crank. It's what my Small block ford got stroked to. I had more head but it made 364 rear wheel hp so figure 420ish to 450 at the flywheel at 6,400 rpm.

It rev'ed pretty quickly.

So, what will you stick it in? What trans? If you're trying to build a hotter motor out of it? I would recommend to have a custom cam ground for it and dyno tune it you'll be amazed

Tobra · Tobra's Garage

My brother had that 327/300 motor in a 68 Camaro, that car was so very fast. Red metalflake paint, black vinyl interior with front seats out of a 69, so it had head rests