Difference from 72' to a 79' motor?
Laughing Gas
Joined: Dec 2012
Posts: 801
Likes: 7
From: Toledo, Ohio
. Not much difference '72 to '82... 1971 400" had more power, higher compression ratio, better MPG... compression ratio dropped in '72... about '74 the exhaust ports got emissions bosses in some vehicle models... cam was retarded... 351"M version added... '78 the blocks were strengthened to prevent cracking...
. Really really suggest just rebuilding your '79 351M with 400" crank to 408"... TMI pistons... non-retarded timing chain setup... modern cam/lifters/new springs... to bring your engine tech 30 years into the future... better throttle response... much more power... better MPG...
. Really really suggest just rebuilding your '79 351M with 400" crank to 408"... TMI pistons... non-retarded timing chain setup... modern cam/lifters/new springs... to bring your engine tech 30 years into the future... better throttle response... much more power... better MPG...
Thread Starter
|
Junior User
Joined: Aug 2014
Posts: 92
Likes: 1
Thanks guys, I missed a deal on one 2 days ago, rebuilt 400 motor, never run, high comp cam, edelbrock carb, the guy had receipts from the shop over $3500, he was asking $1000, I was a few hours too late! Oh well, guess I'll keep building mine.
Thread
Thread Starter
Forum
Replies
Last Post
peakster
335 Series- 5.8/351M, 6.6/400, 351 Cleveland
3
Oct 12, 2014 09:01 PM
Lawrence Taylor
335 Series- 5.8/351M, 6.6/400, 351 Cleveland
13
Jul 7, 2014 09:44 PM
autojames2002
335 Series- 5.8/351M, 6.6/400, 351 Cleveland
3
Dec 6, 2004 09:24 AM
