Author Topic: what engine is this (Read 7567 times)

weebo74 · « **on:** March 21, 2009, 04:34:24 pm »

hello i just got a 1979 k10 stepside and was told it has a 383 stroker in it but the engine code tells me that it is a 1969 327 the code is MK15800 is there a web site that i can go to. to be sure thanks russell

DnStClr · « **Reply #1 on:** March 21, 2009, 04:56:31 pm »

Russel, does the Moretech site help you? It'll take a bit of reading..
http://www.mortec.com/location.htm

Russ130 · « **Reply #2 on:** March 21, 2009, 04:57:48 pm »

gm never made a 383 so there is no code for one

Chevalade · « **Reply #3 on:** March 21, 2009, 07:19:58 pm »

That is not even an engine code. It will either be a 6 or 7 digit code, all numbers.

jwag30 · « **Reply #4 on:** March 21, 2009, 07:50:19 pm »

where did u get that code?

ur block id will be behind the head on the drivers side stamped on block.

weebo74 · « **Reply #5 on:** March 21, 2009, 10:28:11 pm »

ok i found the number behind the alt and i look on the back of block i can not make out the numbers

jwag30 · « **Reply #6 on:** March 21, 2009, 10:52:00 pm »

327,350 used the same block as far as that goes.but how to tell its a 383 without tearing into it dont know if u can?

Lt.Del · « **Reply #7 on:** March 21, 2009, 11:46:15 pm »

a 383 will have a 400 cid harmonic balancer and a flex plate/flywheel for a 400 cid. Because it uses a 400 cid crank.

If ther is a number on either, you could probably trace it. Or, there may be a size difference for a 400 cid balancer. Those will be the only exterior signs of a 383.

Take a look at my 79, can you tell it has a 383?

www.delbridge.net/79truck.html

Irish_Alley · « **Reply #8 on:** March 21, 2009, 11:52:16 pm »

i think what hes asking is, even tho its a 327 or 350 block it can be made into 383. and like jwag said with out tearing into it i don't think you can tell

HAULIN IT · « **Reply #9 on:** March 22, 2009, 01:04:56 am »

As mentioned above, the block numbers will tell you what it started as (327,350, ect.) from there a 400 crank could have been installed to make that engine (with boring) a 383. Average dollar 383's need an external balance (as Sgt. mentioned). The 400 balancer is easily identified by being a large balancer with about half of the rear portion of the band missing (notched out for balance) this is the only Small Chevy with this balancer. Hope this helps, Lorne

Chevalade · « **Reply #10 on:** March 22, 2009, 08:01:47 am »

Some 327's had the small journal mains, and were 2 bolt same as the 283. Which will not accept the large main crank of the 350/400. Would need the casting number to really know which it is.

Russ130 · « **Reply #11 on:** March 22, 2009, 08:52:00 am »

Other than the 8" balancer you would not be able to tell my engine was a 383 or a 400. Since I had a new crank, balancer and flywheel it is internally balanced so I could have gotten a stock 350 size balancer. The only way to tell for sure what motor it is is to pop off a head and measure the bore and stroke.

jwag30 · « **Reply #12 on:** March 22, 2009, 08:03:24 pm »

Russ130 hit the nail on the head. The only way to determin c.i.d is to measure the bore and stroke. Harmonic balancer is not a surefire give away of a 383. If you use an aftermarket rotating assembly like I am that is internally balanced you can use any 6 or 8 inch balancer for internally balanced small block chevy.

Lt.Del · « **Reply #13 on:** March 22, 2009, 08:46:07 pm »

Drive it. If there are loads of torque, it's a 383 stump puller

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Author Topic: what engine is this (Read 7567 times)

weebo74

what engine is this

DnStClr

Re: what engine is this

Russ130

Re: what engine is this

Chevalade

Re: what engine is this

jwag30

Re: what engine is this

weebo74

Re: what engine is this

jwag30

Re: what engine is this

Lt.Del

Re: what engine is this

Irish_Alley

Re: what engine is this

HAULIN IT

Re: what engine is this

Chevalade

Re: what engine is this

Russ130

Re: what engine is this

jwag30

Re: what engine is this

Lt.Del

Re: what engine is this