73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: Greasy Fingers on January 24, 2007, 09:47:00 pm
Title: 305 swap to 366 hi deck engine in '86 C10 question
Post by: Greasy Fingers on January 24, 2007, 09:47:00 pm
Has anyone any info on an engine swap in an '86 C10 or C20 to a 366 hi deck chevy truck engine. I have a 350C turbo trans and 2:93 gears and I think that the 366 with the huge torque would be a great swap with decent mileage with a reasonable cost since there are millions of these with realitively low mileage in retires school busses. Anyone with experience, etc. Thanks Greasy Fingers!
Title: Re: 305 swap to 366 hi deck engine in '86 C10 question
Post by: roundedline on January 25, 2007, 05:03:00 pm
shouldn't be much different that a passenger BBC swap. Just drop it in.
Title: Re: 305 swap to 366 hi deck engine in '86 C10 question
Post by: 1976Scottsdale on January 25, 2007, 10:09:00 pm
So much for revving ability... LOL. 366 will pull your house down... it just plans on doing it at 2000 rpm's.
Title: Re: 305 swap to 366 hi deck engine in '86 C10 question
Post by: Greasy Fingers on January 28, 2007, 09:04:00 pm
Pulling the house at 2000 rpm's will work great. My old '86 has 2:73 rear gears so 2000 rpm would be about right I would think at highway speed? What would you think? P.S. it has a 350c Turbo Hydramatic with the lockup torque converter so there would be a 1 to1 through the Trans. Would anyone hazard a guess as to the mileage on this setup?? Interesting project it would seem to me. - Greasy Fingers.
Title: Re: 305 swap to 366 hi deck engine in '86 C10 question
Post by: Lt.Del on January 28, 2007, 10:06:00 pm
Just throwing this out there..,.,will a th350 or th350c work with a big block 366?
SgtDel aka "Andy"
www.delbridge.net
1979 Big 10 383 stroker 1991 Blu 'Burb 3/4 ton 4x4
Title: Re: 305 swap to 366 hi deck engine in '86 C10 question
Post by: Blazin on January 29, 2007, 07:00:00 am
Should its the same block as the 454 Edited by: Blazin at: 1/29/07 7:01 am
Title: Re: 305 swap to 366 hi deck engine in '86 C10 question
Post by: Qship406 on April 01, 2007, 11:34:00 pm
The 12" torque converter will not fit inside the TH350 bellhousing. Everything else is the same as a normal BB to SBC conversion, make sure to get all the accessory brackets from the Tall Deck 366 Bus engine.