Little bit of 442 update

[Stomis]

Gettin ready to pull the 355 from the truck for the cutlass.

Picked up a pair of 906 vortec heads last night with screw in studs, drilled and tapped for a traditional intake, guide plates, and machined for .520 lift with good springs on it for up to .550 lift.

The machinist I know measured everything so its good numbers to go by. He said he'd cut the spring guides for more lift (just in case), tank them, and cut the valves for $200. Seeing as how I picked the heads up for $150 I think $350 for 450hp heads is a badass deal.

He said hes built 11:1 vortec 355s for circle track guys that have had them dynoed making 480hp!

Also said I should have no problem at all seeing 400hp with a 500 lift cam, the heads and 9.3:1.

 

[Greg Ducato]

Nice combo!

 

[scotto0609]

Pics of 442?

 

[Stomis]

Theyre in another garage thread somewhere. Just look back a page or two. I think it was called "So I bought another grandma car as my girlfriend calls them".

 

[b454rat]

Might want to take a look at the intake side of the Vortecs. IIRC, when they first started to use them on carb motors, the intake ports didn't line up very well.

On a side note, I wanted to build a 406 with Vortecs and TBI, using Comp Cams Xtreme 268 cam, mild compression, builder said the motor would be around 425 horse.

 

[pauly383]

Bowtie intakes fit pretty good , they already have raised runners

 

[Stomis]

Might want to take a look at the intake side of the Vortecs. IIRC, when they first started to use them on carb motors, the intake ports didn't line up very well.

On a side note, I wanted to build a 406 with Vortecs and TBI, using Comp Cams Xtreme 268 cam, mild compression, builder said the motor would be around 425 horse.

Yeah I would say thats a very conservative estimate. Dont know if hes considering the TBI a limiting factor there.

I'm gonna be using the comp cams extreme 274. Should give me a 2000-6200 rpm range. I do plan on moving everything over to a 406 block in the future.

As far as the intake ports I'll keep my eye open for that. I'll just gasket match the two of them if theres an issue.