Looking for a Whipple for 5.7 Vortec

[Old77]

I think @Old77 can help you.

Request complete

 

[Hutchinson]

Thanks Old77

 

[Awest623]

Thanks Old77

So you bought a whipple from 77? Keep us updated, sounds like an awesome build. Do you have a build thread?

 

[brutpwr]

Back in the day I ran a 162 cu in High Output (144 was the standard size like the Weiand) B&M supercharger on a built 355 Chevy in my 74 K20. I ran it with all different combos but all with steel heads as aluminum heads were not really out yet on the aftermarket. Honestly just bolting a positive displacement blower to stock motor is probably a blower motors greatest asset as it greatly increases power from idle to redline. Lowering the compression to 7.5 to 1 to allow smaller pulleys along with bigger cams for the most part retained low end torque at full throttle but really puts a strain on gas mileage as part throttle efficiency goes out the roof no matter the carb tune or spark advance. The great thing about the blower is it allows great pulling in overdrive even with tall gearing (4.10 gears with 36" tires) which with a 700R4 was like 2.80 to 1. The bad thing was poor mileage and having to run premium fuel. I later built a 400 small block with 11.1 compression and a Comp 268 cam with 1.6 rockers and a Victor Jr manifold for my 70 Camaro and it was a torque monster and pulled on top end with a fairly flat torque curve but I later installed a Comp 292 cam and still pulled pretty decent down low because of the extra cubes and pulled better at the top end. Had a crazy lopey idle too. I think this engine with the Comp 268 cam would have made a better motor for fuel mileage (and run on regular fuel) for much lower cost on fuel and probably run about the same in the qurarter mile in a heavy 4x4 truck. The blower would be best for part throttle torque hands down but a high compression 400 won't be far behind!

 

[L31MaxExpress]

Back in the day I ran a 162 cu in High Output (144 was the standard size like the Weiand) B&M supercharger on a built 355 Chevy in my 74 K20. I ran it with all different combos but all with steel heads as aluminum heads were not really out yet on the aftermarket. Honestly just bolting a positive displacement blower to stock motor is probably a blower motors greatest asset as it greatly increases power from idle to redline. Lowering the compression to 7.5 to 1 to allow smaller pulleys along with bigger cams for the most part retained low end torque at full throttle but really puts a strain on gas mileage as part throttle efficiency goes out the roof no matter the carb tune or spark advance. The great thing about the blower is it allows great pulling in overdrive even with tall gearing (4.10 gears with 36" tires) which with a 700R4 was like 2.80 to 1. The bad thing was poor mileage and having to run premium fuel. I later built a 400 small block with 11.1 compression and a Comp 268 cam with 1.6 rockers and a Victor Jr manifold for my 70 Camaro and it was a torque monster and pulled on top end with a fairly flat torque curve but I later installed a Comp 292 cam and still pulled pretty decent down low because of the extra cubes and pulled better at the top end. Had a crazy lopey idle too. I think this engine with the Comp 268 cam would have made a better motor for fuel mileage (and run on regular fuel) for much lower cost on fuel and probably run about the same in the qurarter mile in a heavy 4x4 truck. The blower would be best for part throttle torque hands down but a high compression 400 won't be far behind!

High compression 6" rod full roller 383 works pretty well too.

 

[Hutchinson]

Awest, no sir, Old77 fixed the title on thread for me.

Sorry fellars, ol’ boy ain’t got back with me yet on the Whipple. Supercharged111, question, since you have both a 454 and a 350 Whipple, are the casings for the 1.6L and 2.3L the same size? I know, probably a dumb question. Is the mounting bolt hole templates same?

 

[Hutchinson]

Reason I asked, Mr. Awest offered to send me a 350 mount for mock up,.... which is way cool, but, I don’t have the 2.3L blower to compare. And from looking at pics, can’t tell. I’d like to try this,....

 

[Supercharged111]

2.3 is longer than the 1.6, but the outlet flange looks to be the same at a glance. I'd have to measure, but I believe the difference in length is all in the back which is why it would put the throttle body through the firewall if you put a 2.3 on 1.6 mounts on a 350. James B did it though on his 383 but I don't know if that's documented anywhere still.

 

[L31MaxExpress]

2.3 is longer than the 1.6, but the outlet flange looks to be the same at a glance. I'd have to measure, but I believe the difference in length is all in the back which is why it would put the throttle body through the firewall if you put a 2.3 on 1.6 mounts on a 350. James B did it though on his 383 but I don't know if that's documented anywhere still.

If one opens the link I added earlier for James Bs 383 when he was selling the supercharge it was a mix of modified parts from multiple kits.

 

[Supercharged111]

If one opens the link I added earlier for James Bs 383 when he was selling the supercharge it was a mix of modified parts from multiple kits.

So it does bolt right up to the outlet. The only reason he modded his outlet was to intercool it. He also relocated the brake master reservoir and I can't see how he managed to clear the hydroboost accumulator. Unless he mounted the HB upside down?