Sbc to bbc problems.

[bd blk 12v]

Hello guys. I'm a long time lurker almost first time poster. I need some help. I have been searching and haven't had the best of luck. I have a 69 cst odd ball year I'm finding out. It was a 350 350 truck. The block was cracked on the starter mounting bolts. A friend had an l34 396 out of a chevelle and I bought it. I changed the cam and bought the 73-87 frame mounts. I bought some moroso solid motor mounts from him. They are part number 710-62630k. I bought Harland sharp roller rockers and ebay fabricated bbc valve covers. We installed the engine and both valve covers are against the fire wall. My buddy and I installed the trans and the crossmember and linkage is off too far back about an inch and a half. What would be the correct way to repair this? Is the mounts not correct? What should I buy? I don't want to cut and drill if I don't have to. Thanks guys I have a long water pump on the engine also.
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[Daubs]

I'm sure someone here will have more accurate information than me. But that big block should fit with proper motor mounts. My Dad had a 70's c-20 with the big block. Straight from factory. Something is not right with your motor mounts(?)

[bd blk 12v]

Thanks for the reply. I'm at a loss I don't know what I need to do to resolve the issue.
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[Mike C]

67-71 had different frame stands and mounts than any other years. 72 had it's own. 73-87 trucks are very similar front suspension wise, but driveline placement in relation to the cab is different. Most big block conversions into 4x4 trucks requires a body lift or firewall mods. The bolt in answer is to buy correct big block mounts.

[Prematuregrey]

Not much help as I don't know which mounts were used, but the BB in my K20 has no room between the valve covers and firewall. It was the first thing I noticed when I popped the hood. It doesn't interfere with anything but it's close and there has been no firewall mods. I'd say research on the correct mounts you would need or make some custom ones.

[bd blk 12v]

The truck is a 2wd. Thanks for the help.
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[biohazardbill]

Are the mounts in the forward holes on the frame?
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[bd blk 12v]

Yes sir they are in the forward most holes in the frame. I have headers on it and they fit perfect but nothing else does.
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[biohazardbill]

When I put my bbc in the 67 I used the cpp mounts in the forward holes with the tall valve covers. Running Chevelle mid length headers. I can fit my fingers between the valve covers and the firewall. How low is your trans sitting? Maybe tilted to far back?
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[bd blk 12v]

I will have to look at the transmission. I have the transmission mounted to the engine and the crossmember under the trans. I have an energy suspension trans mount on it but it looks like the engine and trans needs to move forward.
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[biohazardbill]

Pics would probably help.
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[bd blk 12v]

I will get some tomorrow its in the storage with no lights. Thanks for the help.
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[too much stuff]

Originally Posted by biohazardbill

Are the mounts in the forward holes on the frame?
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It sounds like you are in the rear holes. I think the 73 mounts will work, but you will have to move them forward to the other set of holes and i think you will need to drill some new holes for the lower ones.

[bd blk 12v]

Too much stuff the 73-87 stands are in the front holes of the frame. They are not in the rear holes.
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[Tom Vogel]

I put a BB in mine. I used the 72 stand and mounts and everything is fine. Tall fabricated valve covers and all. Oh yea, I have the long water pump AND a big Procharger, and it all clears my electric fans.
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[VA72C10]

73-87 mounts do not fit the same...you have to move them further forward. Either get the 72 mounts or move the 73-87 mounts approx 1 1/2" forward.

[bd blk 12v]

Ok if I move the mounts forward will I have clearance from the wp to the radiator. I have an electric fan I was goin touse as a puller. I measured with the fan installed I have about 3/4 of an inch. What if I buy the performance online tubular mounts? Is this a good idea and delete the 73-87 stands?
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[VA72C10]

Not sure how it's that close to the radiator/fan and also hitting the firewall...I had tons of room with the 72 engine stands at the front...it's tight at the firewall but there was plenty of room for a factory fan which is a lot bigger than an electric fan

...unless you have both (electric fan and a stock fan) then I'd use the electric fan as a pusher if possible...

[Robznob11]

Originally Posted by bd blk 12v

Ok if I move the mounts forward will I have clearance from the wp to the radiator. I have an electric fan I was goin touse as a puller. I measured with the fan installed I have about 3/4 of an inch. What if I buy the performance online tubular mounts? Is this a good idea and delete the 73-87 stands?
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I dont see why you wouldn't these trucks came with bbc so there should b e plenty of room, also that car motor should have a short wp. Id move the stands forward 1 1/2" it is easy to drill a few holes if you have to i did to put the ls in! Used the same mounts only i went further back lol!
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[Shyguy]

When we put the '74 454 in my '69 frame we used the motor mounts and frame stands from the '74. We did have to move the motor forward and drill new holes in the frame and the cradle.

The reason we went with the stuff from the '74 was they allowed room for the hooker headers I had and allowed plenty of room for the clutch Z bar.