New 5.7ltr engine with 300 hp and no "get up and go".

Asked by Apr 21, 2014 at 04:15 PM about the Chevrolet Silverado 1500

Question type: Maintenance & Repair

I had a new (not rebuilt) 5.7 engine installed in my 98 Chev PU.  Runs fine, starts first go.  
New distributor w/plugs and new wires.  All bought from Summitt.  The truck just doesn't
have any speed from the start.  Any ideas?

2 Answers

19,535

is the computer tuned for the aftermarket motor? That engine factory produced 250ish hp. Did you build it or was it a crate engine. Also is the cam computer safe? If it is to extreme it wont produce the vacuum needed by the computer to make it operate properly.

55

The timing offset might need to be checked.. or u might not have one cylinder working which can be tricky to detect on a v8 if u dont know what it sounds like, the motor will shake while idling. Its easy to confuse a plug wire - although u say it fires/idles well.. just something to check in case. If the timing was not set close enough it might be u have to do the offset with a special tool. I was lucky and got it right on when doing a friends car 2 months ago, also non rebuilt swap - works fine.

Your Answer

Chevrolet Silverado 1500 Experts

  • #1
    John Carson
    Reputation
    2,660
  • #2
    Rowefast
    Reputation
    2,000
  • #3
    Silverado_owner_2006
    Reputation
    1,710
View All

Related Models For Sale

Used GMC Sierra 1500
1,028 Great Deals out of 66,261 listings starting at $1,995
Used Ford F-150
2,578 Great Deals out of 197,075 listings starting at $1,300
Used Chevrolet Silverado 2500HD
329 Great Deals out of 30,482 listings starting at $3,500
Used Dodge Ram 1500
388 Great Deals out of 10,843 listings starting at $1,500
Used Toyota Tundra
466 Great Deals out of 33,601 listings starting at $2,000
Used Toyota Tacoma
598 Great Deals out of 44,632 listings starting at $1,790
Used Ram 1500
1,015 Great Deals out of 110,605 listings starting at $6,700
Used Chevrolet Tahoe
736 Great Deals out of 41,543 listings starting at $1,995
Used Chevrolet Colorado
277 Great Deals out of 34,283 listings starting at $1,900
Used Ford F-250 Super Duty
327 Great Deals out of 45,599 listings starting at $1,700
Used Chevrolet Camaro
442 Great Deals out of 30,817 listings starting at $2,495
Used Chevrolet Silverado 1500HD
6 Great Deals out of 267 listings starting at $2,195
Used Chevrolet Silverado 2500
6 Great Deals out of 221 listings starting at $2,888
Used Nissan Titan
214 Great Deals out of 20,683 listings starting at $3,390
Used GMC Sierra 2500HD
109 Great Deals out of 13,926 listings starting at $2,999

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.