In need of more drive

[pro1]

I have a 08 lazer rear tire Temps are even and car handles grate just lacking forward drive I think it's the right frame rail dragging the track but if not I was thinking of switching from a 300 10inch in the lift bar to a 350 but it's a 12 inch or would a 12 inch 300 do about the same just a smaller adjustment Any help would be greatly appreciated Thank you and this is my first year in a late model

[Punisher88]

The length of the spring has no effect on spring rate. Unless it coil binds. You could try moving the shock out a hole on the lift arm.

[Matt49]

Like Punisher88 said, length of spring doesn't matter unless you're coil binding.
How much 5th coil travel are you getting?
What are the track conditions and size/configuration of track? What do you have for motor and how are you geared?

[7uptruckracer]

Lazers seem to have that problem....Did you update to the newer front end a spindle design? Fought one two years ago on it nothing seemed to cure it....Kinda like the rockets right now lol

[collateralDamage]

are you sure you aren't just tight in the middle of the corner? you can put just about any spindle combo on that car since the uppers are infinitely adjustable. i have heard of guys running master's s7 spindles both sides as well as lazer black/rocket blue. keep in mind with the bar lengths even up on the rear, your rr while be ahead about 3/8".

[pro1]

Like I said I'm new to late model I ran street stock for many years I ran a 3 link with a lift bar and J-bar and I ran a brc33 or 7/1 in my left rear with 9in 300 back in 2010 and I think it has the newer spindles they had everything marked for the 1552 up chassis anyway no I don't know the travel of my fith coil and it's 1/3 semi banked slick momentum track I have a little 362 sbc steel block with about 14.5to1 comp brodix -10 heads matched intake flowed and roller 630 cam. Set up I was running LF500 RF375 LR2B300 RR225 shocks are all gas mostly Genesis G1 LF G1 3/5 RF G1 3/8 LRB AFCO 21 7/2 LRF G1 7/1 RR G1 4/5 AND Fifth coil G1 3/7 J-bar 1up from bottom on pinion and nutral on chassis all rods nutral but right lower the hole way down weight with driver left 55.1% rear 54.6% 70lbs bight this is were I started with a 604 crate be for I put the steel block in I have not scaled the car but this is were I'm at now with shocks and springs LF 550 G1 5/4 RF 350 AFCO 21 3/14 LRB 250 AFCO 21 7/2 LRF G1 7/1 RR 225 5/4 FITH G1 3/7 J-BAR 1 UP FROM bottom on reared and 1 down from the top on chassis 9inch split all rods nutral but the Left upper 1/2 hole down from the top

[pro1]

15 inch drop on the left rear

[TALON75]

Try a 200 in LR, set wedge at 90-100, keep the 300 in the lift arm, then get back to us with results. And please use spaces and commas(puncuation) when listing all this info, very hard to separate all your info . good luck.

[7uptruckracer]

^^^^ what he said!