Mopar 273-4bbl Combo

[James L Miller]

Originally Posted by Don Anderson

X2
Matt Steen @ 507-532-2436

I finally got in touch with Matt today. We had been playing phone tag for a few days. He gave me the advice of using a 318 block (he preferred an X block, not many of those around with the unbored 3.91" bores) and sleeve it down to 273 bore sizes. I think I agree as I was talking to my machinist in Tampa and he did a quickie sonic check and got wall thickness in the .160"-.180" range with standard bore blocks. It looks like Melling has some 1/8" wall sleeves that would fit in a standard bore 318 that would get them down to NHRA specs. He also seemed to prefer the 302 heads over the 920 heads. He is building a 273 stocker engine now. Matt had run the 273-4 engine as a stocker many years ago and said it was making around 330-340 HP back then.

So it looks like we either hard block the 273 blocks or sleeve a 318 down.

[Rob Ayres]

PM sent. Call me

[Greg Reimer 7376]

Back in high school, 1968-1972, two Mopars were around that were somewhat overlooked in the days of 383 and 440 Roadrunners,GTX's,Challengers, and other brand big block cars. One guy had a Dodge Dart GT, 273,4barrel and a 4 speed, and he never ceased to amaze everybody with what that little pocket rocket would do. He beat a lot of unsuspecting cars with it. Another small block fun car was the 70 Duster 340 with a 4 speed. that would give 350 Camaros and 396 Chevelles fits. It's not that I don't like Chevelles, I'm up to my eyebrows in them, but some of these other combinations are worth looking into. The Bushmakers prove that every time they show up.

[Charlie A]

Originally Posted by Rob Ayres

PM sent. Call me

You should call Rob.

[gmonde]

Originally Posted by James L Miller

I bought a 1966 Dodge Dart off a local Stock/SS racer in the DFW area. It's pretty much just a roller at this point, but it has a cage already in it. My plan is to run it in Stock, natural K/SA at 13.47 #/HP, probably drop down to L/SA. So far, just have a couple of blocks, cranks, picked up some 920 heads at a local swap meet, bought an LD4B and a 1967 273 AFB off Terry Dye. I made a post over on Moparts about valve selection that works in these heads, and some body suggested I put a post over here. So, if anyone has any info they are willing to divulge (buy this, don't buy that, you're a loon for running a Mopar, etc.), please post or send me a PM. Thanks.

did that ld4b edelbrock come from the factory ?? thought it was a cast iron intake

[James L Miller]

Originally Posted by gmonde

did that ld4b edelbrock come from the factory ?? thought it was a cast iron intake

It got added to the engine blueprint specs, not sure when. I'm grateful as the LD4B was easier to find than the flat iron intake.

I think I found some 1.2mm rings in the 3.66" range. Good to know they have the spacers already. I'll check into it. I e-mailed CP to see what their pistons costs. My machinist thinks the Ross pistons are too hard (brittle?).

Paul has sent me a PM. I haven't got much detail yet, but I have plenty of time.

[gmonde]

Originally Posted by James L Miller

It got added to the engine blueprint specs, not sure when. I'm grateful as the LD4B was easier to find than the flat iron intake.

I think I found some 1.2mm rings in the 3.66" range. Good to know they have the spacers already. I'll check into it. I e-mailed CP to see what their pistons costs. My machinist thinks the Ross pistons are too hard (brittle?).

Paul has sent me a PM. I haven't got much detail yet, but I have plenty of time.

the amc's had the r4b also but it got yanked a year later ,,,, just seams odd

[David Lee]

Originally Posted by gmonde

the amc's had the r4b also but it got yanked a year later ,,,, just seams odd

I think this got approved because of the d-dart, but I could be wrong

[Billy Nees]

Originally Posted by David Lee

I think this got approved because of the d-dart, but I could be wrong

D-Darts had factory modified (intake openings bored out to accept Holley) standard 273 intakes. AND adapter plates.

[Billy Nees]

Originally Posted by gmonde

did that ld4b edelbrock come from the factory ?? thought it was a cast iron intake

It was and it should be gone.