66 with SB2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

tuff enuff · 07-20-2018, 11:37 PM

I have a question about a 66 with a SB2 390 with T400, dyno 685 hp with 590 lbs. of torque. When i put in drive and give it gas everything is fine , as soon as I punch it and let off the gas it pops into neutral. I have checked motor /trans mounts , everything looks good. Could it be a result of engine torque? Help is much appreciated.

**Captainfab** · 07-21-2018, 12:31 AM

This question might be more apt to get a response if moved to the engine and drivetrain section.

Does your truck have mechanical shift linkage? When it shifts into neutral, can you simply shift it by hand back into drive?

07-20-2018, 11:37 PM	#1
tuff enuff Registered User Join Date: May 2018 Location: Fayetteville ga. Posts: 14	66 with SB2 I have a question about a 66 with a SB2 390 with T400, dyno 685 hp with 590 lbs. of torque. When i put in drive and give it gas everything is fine , as soon as I punch it and let off the gas it pops into neutral. I have checked motor /trans mounts , everything looks good. Could it be a result of engine torque? Help is much appreciated.

07-21-2018, 12:31 AM	#2
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,252	Re: 66 with SB2 This question might be more apt to get a response if moved to the engine and drivetrain section. Does your truck have mechanical shift linkage? When it shifts into neutral, can you simply shift it by hand back into drive? __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE



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