Was a hypothetical engine build.......................now a reality!!

[chevytaylor]

Ok guys, just for fun.
What do you think, N/A HP, ET and MPH would be in a 3900lb 62 street/strip Bubbletop?

Car
. Street/strip 3900lb race weight
. Standard gear ratio, trans brake TH400
. 8" ATI tree master 5000rpm stall convertor
. 4.1 rear gear
. 30" tall M/T radial or 29 1/2" tall Hoosier radial

Engine
. Carl McQuillen built, World 540 inch block
. 12.1 comp
. Fully ported, CNC Edelbrock heads, flow approx 345 cfm @ around .700" lift
. McQuillen new 2 x 4 intake
. 2 x 850 Holley HP carbs
. Huge custom ground hydraulic roller, lets say approx .700" lift with 260 @ .50" duration, 110 LSA.
. 2" Stahl headers

Thoughts?

 

[LMBRJQ 60]

I don't know anything Carl but I can't wait for answers.
With the world blocks are they the same angles as a 409 but they take BBC cranks etc and can have a larger bore and stroke?
Steve

 

[La Hot Rods]

Faster than the car I am runnin
I would guess 10.50s

 

[chevytaylor]

I don't know anything Carl but I can't wait for answers.
With the world blocks are they the same angles as a 409 but they take BBC cranks etc and can have a larger bore and stroke?
Steve

Me too Steve. The deck height is taller than standard 409 and the block has been machined to accommodate standard 409 intakes and heads from what I understand.

 

[La Hot Rods]

You runnin at sea level?

 

[chevytaylor]

Faster than the car I am runnin
I would guess 10.50s

10.50's is pretty quick for sure, I was thinking maybe 10.20's

 

[chevytaylor]

Yes, lets say DA would be on average about 1500'

 

[La Hot Rods]

Guessing you have the chassis stepped up.
Be hard not to twist it up without a cage in it.

 

[BSL409]

Me too Steve. The deck height is taller than standard 409 and the block has been machined to accommodate standard 409 intakes and heads from what I understand.

The world block is stock height 960 like a 409.

 

[BSL409]

ET 10.15-10.20S MPH 132-134

 

[BRYAN FUGATE]

I was thinking very low 10's or high 9's. That's a lot of engine may as well go with the z12 heads and intake and go all in they're flowing over 400 I believe Brian knows more on that. What does your white car weigh Brian?

 

[Don Jacks]

250-300 lbs.heavier than the black one.As to the bubble top,10.15-10.25 range as Brian said.

 

[La Hot Rods]

I was thinking very low 10's or high 9's. That's a lot of engine may as well go with the z12 heads and intake and go all in they're flowing over 400 I believe Brian knows more on that. What does your white car weigh Brian?

Carl doesn't have intakes for the Z12 heads.

 

[Skip FIx]

I'm thinking low 10s to 9s if can hook.

 

[427John]

Me too Steve. The deck height is taller than standard 409 and the block has been machined to accommodate standard 409 intakes and heads from what I understand.

I would think it would have to be pretty close to standard deck height to accommodate standard heads and intake unless they did something crazy like shifting the head inboard on the deck surface.A set of intake spacers would accommodate a higher deck block though,especially a Z-11 type setup with its separate valley cover.

 

[MRHP]

If I build the motor, I am sure I could get it deep in the 14's at 82 mph.

 

[Ishiftem]

10.20 should be no problem but it really would need more cam to get more out of it. Just think I went 10.44 with 70 less inches, iron heads, and an edelbrock intake at the same weight. 10.20 should be easy with the list of parts you have.

 

[Fathead Racing]

I'm thinking 10.00 flat. Although that may take a 28" tall tire at the strip. Chassis tuning is going to be paramount. And you will need at least half a season to learn how to drive the car and find out what it wants.

 

[303Radar]

Regarding heads, I would check into Bob Walla's for sure. Not that I've heard of a lot of difference in performance between his and Edelbrock's, but several folks have had problems with valve geometry and some of the supporting hardware.
I know their newer castings are supposed to be better than the old castings, but it is worth taking a look into, especially for something which is going to be beat on.

 

[nana1962409]

Bob also has his raised port heads that flow better than the standard port heads.