87 blazer engine ID - Pirate4x4.Com : 4x4 and Off-Road Forum

realmencutfenders · 09-10-2006, 10:26 PM

I have an 87 Full Size 4x4 Blazer. According to what Ive heard this truck came standard with the 5.7 liter 350 v8, but my VIN number and my original owners manual clearly says my truck has the 5.0 liter 305 v8, which I thought was not available for it. What gives? Also how can I know if my 10 bolts have the gov lock or not?

florida4x4 · 09-11-2006, 06:06 AM

the best way to test the govlock it to put one wheel in the grass, one on the pavement, floor it, cut the wheel so both wheels are in the grass and spin up the tires real good so you lay some good rubbber when they hit the pavement. If the diff breaks then it's a govlock.

derek840378 · 09-11-2006, 06:23 AM

in 87 the only engine options were the 5.7 and 6.2 diesel

#rawkon · 09-11-2006, 09:41 AM

I am not 100% sure about that. My 86 was a 305 and my dad has a 1987 that he bought new with a 305. Keep in mind that is there era that the economy 305 was used very frequently. If you know the block is a 305, just find a 350 for it. As for the gov lock, remove the cover and you will know for sure.

realmencutfenders · 09-11-2006, 01:28 PM

Quote:

Originally Posted by derek840378

in 87 the only engine options were the 5.7 and 6.2 diesel

Exactly my point, but my vin says I have the 305, I guess mine was a late 86 early 87 version then?

Black Dog · 09-11-2006, 02:03 PM

Quote:

Originally Posted by derek840378

in 87 the only engine options were the 5.7 and 6.2 diesel

Nope, the 305 was the standard engine in 1987, with the 350 or 6.2 optional. In 1988 and 1989 the 350 was standard, and the 305 was not available in Blazers and Suburbans. See the factory brochures here http://brochures.slosh.com/

realmencutfenders · 09-11-2006, 02:12 PM

Dang, dont I feel stupid for bragging about having a bigger engine then my bros 5.4 liter Triton. Oh well, thanks for the help guys.

09-10-2006, 10:26 PM	#1 (permalink)
realmencutfenders Registered User Join Date: Sep 2006 Member # 79125 Posts: 143	87 blazer engine ID I have an 87 Full Size 4x4 Blazer. According to what Ive heard this truck came standard with the 5.7 liter 350 v8, but my VIN number and my original owners manual clearly says my truck has the 5.0 liter 305 v8, which I thought was not available for it. What gives? Also how can I know if my 10 bolts have the gov lock or not?

09-11-2006, 06:06 AM	#2 (permalink)
florida4x4 Beaver Pleaser Join Date: Sep 2002 Member # 13645 Location: home of the wayward dirt bike Posts: 1,419 Blog Entries: 1	the best way to test the govlock it to put one wheel in the grass, one on the pavement, floor it, cut the wheel so both wheels are in the grass and spin up the tires real good so you lay some good rubbber when they hit the pavement. If the diff breaks then it's a govlock. __________________ 1972 GMC Submarine 383 / TH350 / 203D-NP205 / D60 / 14FF / 42's on Stazworks / heavy foote / four eyez Inclined to brute force attack a 70* incline with a Quadrajet 1997 GMC K3500 Suburban 454 / 4L80E / HP60 SAS / PROJECT TOWHOE

09-11-2006, 09:41 AM	#4 (permalink)
#rawkon Registered User Join Date: Aug 2006 Member # 78077 Posts: 1,891	I am not 100% sure about that. My 86 was a 305 and my dad has a 1987 that he bought new with a 305. Keep in mind that is there era that the economy 305 was used very frequently. If you know the block is a 305, just find a 350 for it. As for the gov lock, remove the cover and you will know for sure. Last edited by #rawkon; 09-11-2006 at 09:43 AM.

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09-11-2006, 06:23 AM	#3 (permalink)
derek840378 Registered User Join Date: Jun 2006 Member # 73560 Location: Crosby, Texas Posts: 347	in 87 the only engine options were the 5.7 and 6.2 diesel

09-11-2006, 02:12 PM	#7 (permalink)
realmencutfenders Registered User Join Date: Sep 2006 Member # 79125 Posts: 143	Dang, dont I feel stupid for bragging about having a bigger engine then my bros 5.4 liter Triton. Oh well, thanks for the help guys.