2 bolt or 4 bolt - The 1947 - Present Chevrolet & GMC Truck Message Board Network

TireSmoke420 · 12-14-2005, 01:50 PM

heys guys its been a while since ive been on here but my 69 . the guy came to get it and he started freaking out saying the motor is knocking. the valves tick a lil and need adjustment. it has solid lifters the guy just figured theyd be hydrolic. now i thought all of these motors in these trucks were solid lifters. but after i said that he was just like ohh ok then no problem then he listend again and said there was sum other noise um well invisible noise is more like it. but yeah yeah anyways my qwestion if its a 2 bolt or 4 its got the original 396

**truckdude239** · 12-14-2005, 01:57 PM

its probley an 2 bolt just my .02 cent don't hold me too it

67chevemall · 12-14-2005, 02:01 PM

69 396? I'd say 4 bolt.

You could crawl in the snow and drop the oil pan to find out!LOL

**truckdude239** · 12-14-2005, 02:04 PM

okay forget my last post lol only ture way to kow is to drop the pan like he said

70rs/ss · 12-14-2005, 03:16 PM

My guess would be look at the casting number on the back of the block where the tranny meets the motor then look that number up. Sometimes the info says 2 or 4, then I would just err on the side of caution and call it a 2-bolt. The only 4 bolts in a 396/402 would be the 375 horse hi-po motors. It took Chevy awhile to put 4-bolt BBC in the trucks. Now from 73-up BBC trucks would more than likely have 4-bolts. In any case the 2-bolt is stronger for everyday use than the four bolt (weaker because the 4 bolts pull from the same area and can pull out) If somone want to spin a BBC around the 7k area I'd say get a 2-bolt block and buy the splayed caps, but not a factory 4-bolt block. This is why I'd tell em its a 2-bolt (unless you want to pull the pan to 100%

12-14-2005, 01:50 PM	#1
TireSmoke420 One of the few GMC'ers Join Date: Jul 2005 Location: Des Moines, Iowa sometimes Butler, PA Posts: 146	2 bolt or 4 bolt heys guys its been a while since ive been on here but my 69 . the guy came to get it and he started freaking out saying the motor is knocking. the valves tick a lil and need adjustment. it has solid lifters the guy just figured theyd be hydrolic. now i thought all of these motors in these trucks were solid lifters. but after i said that he was just like ohh ok then no problem then he listend again and said there was sum other noise um well invisible noise is more like it. but yeah yeah anyways my qwestion if its a 2 bolt or 4 its got the original 396 __________________ 87' Silverado 4x4 "Young, Dumb And Full Of Cum" Last edited by Liz; 12-14-2005 at 05:26 PM. Reason: for sale / adv for sale etc etc classified sections only

12-14-2005, 01:57 PM	#2
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,237	Re: 2 bolt or 4 bolt its probley an 2 bolt just my .02 cent don't hold me too it __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

12-14-2005, 02:01 PM	#3
67chevemall Registered User Join Date: Apr 2003 Location: NB Posts: 3,367	Re: 2 bolt or 4 bolt 69 396? I'd say 4 bolt. You could crawl in the snow and drop the oil pan to find out!LOL __________________ 1968 Chevy C10 307 3ott fleetside 1967 Chevy C/10 V8, 3spd, fleetside lwb.Sold 1967 Chev C/10 step, 383, M21. SOLD

12-14-2005, 02:04 PM	#4
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,237	Re: 2 bolt or 4 bolt okay forget my last post lol only ture way to kow is to drop the pan like he said __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

12-14-2005, 03:16 PM	#5
70rs/ss Registered User Join Date: Dec 2004 Location: Northern AZ Posts: 7,270	Re: 2 bolt or 4 bolt My guess would be look at the casting number on the back of the block where the tranny meets the motor then look that number up. Sometimes the info says 2 or 4, then I would just err on the side of caution and call it a 2-bolt. The only 4 bolts in a 396/402 would be the 375 horse hi-po motors. It took Chevy awhile to put 4-bolt BBC in the trucks. Now from 73-up BBC trucks would more than likely have 4-bolts. In any case the 2-bolt is stronger for everyday use than the four bolt (weaker because the 4 bolts pull from the same area and can pull out) If somone want to spin a BBC around the 7k area I'd say get a 2-bolt block and buy the splayed caps, but not a factory 4-bolt block. This is why I'd tell em its a 2-bolt (unless you want to pull the pan to 100% Last edited by 70rs/ss; 12-14-2005 at 03:16 PM.



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