XXX block question...

[Darrin]

Ok. I bought a 302 shortblock for 50.00 and it turns easy....no ridge.....clean. My question is : What is the XXX markingson either side of the valley. The guy I bought it from said it is a designation for heavy duty. Also it has what looks like E7TE stamped in the drivers side of the block.....Just curious as to if I got something oddball....Thanx

 

[Modular2v]

i forget what it means but i know there is also YYY blocks

 

[Darrin]

Maybe it means it came in a car with "PORNO RED" interior...hahahah

 

[Hickfied]

XXX and YYY means they are roller blocks.... E7 is the block code for 1987. I think they used that block untill they stopped using the 302 though.

 

[Darrin]

Thanks for that info....

 

[Fast63]

My 85 block has XXX and the 91 block that I am using for my 347 has YYY, so probably sometime after 87 they switch to YYY. Basically, it doesn't mean anything.

 

[dtlionsfan]

Anyone seen an ZZZ block?

 

[Blk91stang]

Yeah, my stock 110,000 mile shortblock I pulled out was pretty tired

 

[Mustang78]

i've heard XXX are roller blocks and YYY are flat tappet..but i'm not sure and i could be mixed up..basically like Fast63 said it doesn't mean a thing(i had a guy try to sell me one because XXX meant police interceptor block and it had like 6,0000000HP)

 

[Fast63]

haha, yeah police interceptor engine blocks were no different from production blocks. XXX and YYY blocks are both roller.

 

[jdgt281]

I was always told that if it had XXX on it but spread out across the lifter valley it was called to **** block. Dont know why but thats i heard.

 

[Mustang78]

my old flat tappet had either XXX or YYY on the block..so not ONLY roller blocks have this stamp, FT blocks do too

 

[Hickfied]

What year was your FT engine?

I have heard that XXX and YYY blocks came FT but were setup for roller also.

 

[jwzg]

They came in "Peter North Edition" vehicles with "Porno Red" interiors. Block is made to handle a blower.

 

[Djstorm100]

is there a way to tell if a block is made for roller or FT?

 

[Hickfied]

there will be two screw holes in the center of the lifter valley for the dog bone hold down tray.

 

[Djstorm100]

if it has holes in between the lifters for that clyinder for the dog bones then its roller?

 

[Djstorm100]

http://horsepowerjunkies.com/forums/showthread.php?t=56354 link to the site, he has more pictures but these are just two of them below


http://i34.photobucket.com/albums/d106/CarCrazyRDM/for sale/IMG_2001.jpg


http://i34.photobucket.com/albums/d106/CarCrazyRDM/for sale/IMG_2093.jpg
he shows a shot with the lifters which are rollers and rods ect

 

[Foxfan88]

it means it was a factory roller block and can be used with roller lifters easy, just find some dog bones and spider plate and it will work fine.

 

[cenok is family]

it means it was a factory roller block and can be used with roller lifters easy, just find some dog bones and spider plate and it will work fine.

+1

doesn't really mean anything. i've had both XXX and YYY blocks and both were roller motors.